AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 1, 1996
                                                     Registration  No. 333-_____
     ===========================================================================

                          SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C. 20549
                                ----------------------

                                       FORM S-3
                                REGISTRATION STATEMENT
                                        Under
                              THE SECURITIES ACT OF 1933
                                ----------------------

                            NORTHWEST NATURAL GAS COMPANY
                (Exact name of registrant as specified in its charter)

                 OREGON                                 93-0256722
    (State or other jurisdiction of        (I.R.S. Employer Identification No.)
     incorporation or organization)

          One Pacific Square, 220 N.W. Second Avenue, Portland, Oregon 97209
                                     503-226-4211
     (Address, including zip code, and telephone number, including area code, of
     registrant's principal executive offices)
                                ----------------------
                                  RICHARD G. REITEN
                                      President
                             and Chief Operating Officer
                      One Pacific Square, 220 N.W. Second Avenue
                               Portland, Oregon  97209
                                     503-226-4211
            BRUCE R. DeBOLT                         JOHN T. HOOD, Esq.
    Senior Vice President, Finance,                  Reid & Priest LLP
      and Chief Financial Officer                   40 West 57th Street
One Pacific Square, 220 N.W. Second Avenue       New York, New York  10019
        Portland, Oregon  97209                        212-603-2000
              503-226-4211
       (Names, addresses, including zip codes, and telephone numbers, including
     area codes, of agents for service)
                                ----------------------
        Approximate date of commencement of proposed sale to the public:  From
     time to time after this Registration Statement becomes effective as
     determined by market conditions.

        If the only securities being registered on this Form are being offered
     pursuant to dividend or interest reinvestment plans, please check the
     following box. [ ]

        If any of the securities being registered on this Form are to be offered
     on a delayed or continuous basis pursuant to Rule 415 under the Securities
     Act of 1933, other than securities offered only in connection with dividend
     or interest reinvestment plans, check the following box.  [X]

        If this form is filed to register additional securities for an offering
     pursuant to Rule 462(b) under the Securities Act, please check the
     following box and list the Securities Act registration statement number 
     of the earlier effective registration statement for the same 
     offering. [ ]  __________________

        If this form is a post-effective amendment filed pursuant to Rule 462(c)
     under the Securities Act, check the following box and list the Securities
     Act registration statement number of the earlier effective registration
     statement for the same offering.  [ ] ____________________

        If delivery of the prospectus is expected to be made pursuant to Rule
     434, please check the following box.  [ ]
                                ----------------------
                           CALCULATION OF REGISTRATION FEE
       ======================================================================= 
                                        Proposed      Proposed
       Title of each                    maximum       maximum
         class of                       offering     aggregate
       securities to   Amount to be    price per      offering     Registration
       be registered    registered        unit         price           fee
      ------------------------------------------------------------------------
      Debt Securities  $150,000,000+     100%*     $150,000,000*     $45,455+
      ========================================================================
     *  Inserted solely for the purpose of calculating the registration fee.

     +  The combined Prospectus filed herewith pursuant to Rule 429 also relates
        to an additional $15,000,000 of Debt Securities registered pursuant to
        Registration No. 33-64014 which remains unsold and for which a
        registration fee of $4,688 has been paid.

                                ----------------------
        The registrant hereby amends this registration statement on such date or
     dates as may be necessary to delay its effective date until the registrant
     shall file a further amendment which specifically states that this
     registration statement shall thereafter become effective in accordance with
     Section 8(a) of the Securities Act of 1933, as amended, or until the
     registration statement shall become effective on such date as the Commis-
     sion, acting pursuant to said Section 8(a), may determine.
     ===========================================================================

        Pursuant to Rule 429, the combined Prospectus filed herewith also
     relates to Registration No. 33-64014.



 


     PROSPECTUS
     ----------

                                     $165,000,000
                            NORTHWEST NATURAL GAS COMPANY
                         SECURED MEDIUM-TERM NOTES, SERIES B
                           (SERIES OF FIRST MORTGAGE BONDS)
                                         AND
                        UNSECURED MEDIUM-TERM NOTES, SERIES B
                 Due from Nine Months to 30 Years from Date of Issue
                                ----------------------

        Northwest Natural Gas Company ("Company") may offer from time to time up
     to $165,000,000 aggregate principal amount of its debt securities ("Medium-
     Term Notes"), consisting of its First Mortgage Bonds, designated Secured
     Medium-Term Notes, Series B ("Secured Notes"), and its Unsecured Medium-
     Term Notes, Series B ("Unsecured Notes").  The principal amounts, interest
     rates, issue prices and agents' commissions, original issue and maturity
     dates, redemption provisions, if any, and other material terms of the
     Medium-Term Notes will be established by the Company from time to time and
     will be set forth in supplements hereto ("Pricing Supplements").  The
     Medium-Term Notes will have maturities from nine months to 30 years from
     their respective dates of issue.  Interest on each Medium-Term Note will
     accrue from its date of issue and will be payable semi-annually in arrears
     on each June 1 and December 1, and at maturity.  The Medium-Term Notes will
     not be subject to redemption prior to their stated maturity unless
     otherwise specified in the applicable Pricing Supplement.
        The Medium-Term Notes will be initially registered in the name of CEDE &
     Co. as registered owner and nominee for The Depository Trust Company, New
     York, New York ("DTC").  DTC will act as a securities depository for the
     Medium-Term Notes of each issue.  Sales of Medium-Term Notes will be made
     only in book-entry form in denominations of $1,000 or any amount in excess
     thereof that is an integral multiple of $1,000 and, except under the
     limited circumstances described herein, beneficial owners of interests in
     the Medium-Term Notes will not receive certificates representing their
     interests in the Medium-Term Notes.  Payments of principal, premium, if
     any, and interest will be made through DTC and its Participants and
     disbursements of such payments to purchasers will be the responsibility of
     such Participants.
        For further information with respect to the Medium-Term Notes, see
     "Book-Entry System", "Description of the Secured Notes", and "Description
     of the Unsecured Notes" herein and the applicable Pricing Supplement.
                                ----------------------
       THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
        AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
              SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
                  COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF
                   THIS PROSPECTUS OR ANY SUPPLEMENT HERETO.  ANY 
                          REPRESENTATION TO THE CONTRARY IS 
                                 A CRIMINAL OFFENSE.

      ============= =============== ====================== ===================
                       PRICE TO            AGENTS'             PROCEEDS TO
                      PUBLIC(1)       COMMISSIONS(2)(3)       COMPANY(2)(4)
      ------------- --------------- ---------------------- -------------------
      Per Note  .        100%            .125%-.750%         99.875%-99.250%
      ------------- --------------- ---------------------- -------------------
      Total . . .    $165,000,000    $206,250-$1,237,500      $164,793,750-
                                                              $163,762,500
      ============= =============== ====================== ===================

     (1)   Unless otherwise specified in the applicable Pricing Supplement,
           Medium-Term Notes will be issued at 100% of their principal amount.
     (2)   The Company will pay commissions to any agents engaged by the Company
           ("Agents"), including Merrill Lynch & Co., Merrill Lynch, Pierce,
           Fenner & Smith Incorporated and PaineWebber Incorporated, in the form
           of discounts, ranging from .125% to .750% of the principal amount of
           any Medium-Term Note, depending upon maturity, and may sell Medium-
           Term Notes to any Agent, as principal.  Unless otherwise indicated in
           the applicable Pricing Supplement, a Medium-Term Note sold to an
           Agent, as principal, will be purchased by such Agent at a price equal
           to 100% of the principal amount thereof less a percentage equal to
           the commission applicable to an agency sale of a Medium-Term Note of
           identical maturity, and may be resold by such Agent to investors and
           other purchasers at varying prices related to prevailing market
           prices at the time of resale as determined by such Agent, or, if so
           agreed, at a fixed public offering price.  No commission will be
           payable on any sales made directly by the Company.
     (3)   The Company has agreed to indemnify the Agents against certain
           liabilities under the Securities Act of 1933.
     (4)   Assuming Medium-Term Notes are issued at 100% of their principal
           amount and before deducting expenses payable by the Company estimated
           at $252,000, including reimbursement of certain expenses of the
           Agents.
                                ----------------------
        The Medium-Term Notes are being offered on a continuing basis by the
     Company through the Agents, which have agreed to use their best efforts to
     solicit purchases of the Medium-Term Notes.  Medium-Term Notes may also be
     sold to any Agent, as principal, for resale to investors and other
     purchasers at varying prices related to prevailing market prices at the
     time of resale, as determined by such Agent, or, if so agreed, at a fixed
     public offering price.  The Company reserves the right to sell Medium-Term
     Notes directly to investors on its own behalf.  The Medium-Term Notes will
     not be listed on any securities exchange, and there can be no assurance
     that the Medium-Term Notes offered by this Prospectus will be sold or that
     there will be a secondary market for the Medium-Term Notes.  The Company
     reserves the right to withdraw, cancel or modify the offer made hereby
     without notice.  The Company or any Agent may reject, in whole or in part,
     any offer to purchase Medium-Term Notes.  See "Plan of Distribution".
                                ----------------------
     MERRILL LYNCH & CO.                                PAINEWEBBER INCORPORATED
                                ----------------------
                   The date of this Prospectus is November __, 1996


 


                                AVAILABLE INFORMATION

             The Company is subject to the informational requirements of the
        Securities Exchange Act of 1934, as amended ("Exchange Act"), and, in
        accordance therewith, files reports and other information with the
        Securities and Exchange Commission ("Commission").  Reports, proxy
        statements and other information filed by the Company can be inspected
        and copied at the public reference facilities of the Commission, Room
        1024, Judiciary Plaza, 450 Fifth Street, N.W. Washington, D.C. 20549,
        as well as at the following regional offices: Seven World Trade
        Center, Suite 1300, New York, New York 10048, and 500 West Madison
        Street, Suite 1400, Chicago, Illinois 60661.  Copies of such material
        can be obtained from the Public Reference Section of the Commission at
        450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates. 
        The Commission maintains a Web site (http://www.sec.gov) that contains
        reports, proxy statements and other information filed electronically
        by the Company.


                   INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

             There are hereby incorporated by reference in this Prospectus the
        following documents heretofore filed with the Securities and Exchange
        Commission:

             (1)  The Company's Annual Report on Form 10-K for the year ended
        December 31, 1995.

             (2)  The Company's Quarterly Reports on Form 10-Q for the
        quarters ended March 31 and June 30, 1996.

             (3)  The Company's Current Report on Form 8-K dated February 27,
        1996.

             All documents filed by the Company pursuant to Section 13(a),
        13(c), 14 or 15(d) of the Exchange Act after the date of this
        Prospectus and prior to the termination of this offering shall be
        deemed to be incorporated by reference into this Prospectus.  Any
        statement contained in a document incorporated or deemed to be
        incorporated by reference herein shall be deemed to be modified or
        superseded, for purposes of this Prospectus, to the extent that a
        statement contained herein or in any other subsequently filed document
        which also is or is deemed to be incorporated by reference herein
        modifies or supersedes such statement.  Any statement so modified or
        superseded shall not be deemed, except as so modified or superseded,
        to constitute a part of this Prospectus.

             The Company hereby undertakes to provide, without charge, to each
        person to whom a copy of this Prospectus shall have been delivered,
        upon written or oral request of such person, a copy of any or all of
        the documents which have been incorporated in this Prospectus by
        reference, other than exhibits to such documents, unless such exhibits
        shall have been specifically incorporated by reference into such
        documents.  Requests for such copies should be directed to C.J. Rue,
        Secretary, Northwest Natural Gas Company, One Pacific Square, 220 N.W.
        Second Avenue, Portland, Oregon 97209, telephone 503-226-4211.


                                     THE COMPANY

             The Company's executive offices are located at One Pacific
        Square, 220 N.W. Second Avenue, Portland, Oregon 97209.  Its telephone
        number is 503-226-4211.  The Company and its predecessors have
        supplied gas service to the public since 1859.  The Company is
        principally engaged in the distribution of natural gas to customers in
        western Oregon and southwestern Washington, including the Portland
        metropolitan area.


                        USE OF PROCEEDS AND FINANCING PROGRAM

             The net proceeds to be received by the Company from the sale of
        the Medium-Term Notes will be added to the general funds of the
        Company and used for corporate purposes, primarily to fund, in part,
        the Company's ongoing utility construction program.

             The Company expects its utility construction expenditures in 1996
        to aggregate $92 million, and in the five-year period, 1996-2000, to
        aggregate between $500 million and $550 million.

             It is estimated that 50% or more of the funds required for
        utility purposes during the 1996-2000 period will be internally
        generated and that the balance, as well as substantially all of the
        funds required for the refunding of maturing and higher-cost debt,
        will be raised through the sale of equity and debt securities,
        including the Medium-Term Notes, in such amounts and at such times as
        the Company's cash requirements and market conditions shall determine. 
        Approximately $21 million of debt securities matured in 1996 and
        approximately $25 million and $15 million will mature in 1997 and
        1998, respectively.


                          RATIO OF EARNINGS TO FIXED CHARGES

             The ratios of earnings to fixed charges, calculated according to
        the rules set forth under the Securities Act of 1933, as amended, for
        the following twelve-month periods were:

                                 TWELVE MONTHS ENDED
         -------------------------------------------------------------------

         JUNE 30,                           DECEMBER 31,
         --------       ----------------------------------------------------
           1996          1995       1994       1993       1992        1991
           ----          ----       ----       ----       ----        ----

           3.54          3.15       3.08       3.22       1.81        1.59

             Earnings consist of net income to which has been added taxes on
        income and fixed charges.  Fixed charges consist of interest on all
        indebtedness, amortization of debt expense and discount or premium,
        and the estimated interest portion of rentals charged to income.


                                  BOOK-ENTRY SYSTEM

             DTC will act as securities depository for the Medium-Term Notes
        of each issue. Except under the circumstances described below, the
        Medium-Term Notes will be issued in the form of one or more fully
        registered notes that will be deposited with, or on behalf of, DTC or
        such other depository as may be subsequently designated
        ("Depository"), and registered in the name of CEDE & Co. (DTC's
        partnership nominee), or such other Depository or its nominee as may
        be subsequently designated. 

             So long as the Depository, or its nominee, is the registered
        owner of the Medium-Term Notes, such Depository or such nominee, as
        the case may be, will be considered the owner of such Medium-Term
        Notes for all purposes under the Mortgage or the Indenture (each as
        defined below), as the case may be, including notices and voting. 
        Payments of principal of, and premium, if any, and interest on, the
        Medium-Term Notes will be made to the Depository or its nominee, as
        the case may be, as the registered owner of such Medium-Term Notes. 
        Except as set forth below, owners of beneficial interests in
        Medium-Term Notes will not be entitled to have any individual
        Medium-Term Notes registered in their names, will not receive or be
        entitled to receive physical delivery of any such Medium-Term Notes
        and will not be considered the owners of Medium-Term Notes under the
        Mortgage or the Indenture.  Accordingly, each person holding a
        beneficial interest in a Medium-Term Note must rely on the procedures
        of the Depository and, if such person is not a Direct Participant (as
        hereinafter defined), on procedures of the Direct Participant through
        which such person holds its interest, to exercise any of the rights of
        the registered owner of such Medium-Term Note.

             If the Depository is at any time unwilling or unable to continue
        as depository and a successor depository is not appointed by the
        Company, individual registered Medium-Term Notes will be issued in
        exchange for the Medium-Term Notes held by the Depository. In
        addition, the Company, at any time and in its sole discretion, may
        determine not to have the Medium-Term Notes held by the Depository
        and, in such event, individual registered Medium-Term Notes will be
        issued in exchange for the Medium-Term Notes held by the Depository. 
        In any such instance, an owner of a beneficial interest in the Medium-
        Term Notes will be entitled to physical delivery of individual Medium-
        Term Notes equal in principal amount to such beneficial interest and
        to have such Medium-Term Notes registered in its name. Individual
        Medium-Term Notes so issued will be issued as registered Medium-Term
        Notes in denominations of $1,000 or any amount in excess thereof that
        is an integral multiple of $1,000.

             The following is based solely on information furnished by DTC: 

             DTC is a limited-purpose trust company organized under the New
        York Banking Law, a "banking organization" within the meaning of the
        New York Banking Law, a member of the Federal Reserve System, a
        "clearing corporation" within the meaning of the New York Uniform
        Commercial Code, and  a "clearing agency" registered pursuant to the
        provisions of Section 17A of the Exchange Act.  DTC holds securities
        that its participants ("Participants") deposit with DTC.  DTC also
        facilitates the settlement among Participants of securities
        transactions, such as transfers and pledges, in deposited securities
        through electronic computerized book-entry changes in Participants'
        accounts, thereby eliminating the need for physical movement of
        securities certificates.  

             Direct Participants include securities brokers and dealers,
        banks, trust companies, clearing corporations, and certain other
        organizations ("Direct Participants").  DTC is owned by a number of
        its Direct Participants and by The New York Stock Exchange, Inc., the
        American Stock Exchange, Inc., and the National Association of
        Securities Dealers, Inc.  Access to the DTC system is also available
        to others such as securities brokers and dealers, banks, and trust
        companies that clear through or maintain a custodial relationship with
        a Direct Participant, either directly or indirectly ("Indirect
        Participants").  The rules applicable to DTC and its Participants are
        on file with the Commission.

             Purchases of the Medium-Term Notes under the DTC system must be
        made by or through Direct Participants, which will receive a credit
        for the Medium-Term Notes on DTC's records.  The ownership interest of
        each actual purchaser of each Medium-Term Note ("Beneficial Owner") is
        in turn to be recorded on the Direct and Indirect Participants'
        records.  Beneficial Owners will not receive written confirmation from
        DTC of their purchase, but Beneficial Owners are expected to receive
        written confirmation providing details of the transaction, as well as
        periodic statements of their holdings, from the Direct or Indirect
        Participant through which the Beneficial Owner entered into the
        transaction.  Transfers of ownership interests in the Medium-Term
        Notes are to be accomplished by entries made on the books of
        Participants acting on behalf of Beneficial Owners.  Beneficial Owners
        will not receive certificates representing their ownership interests
        in the Medium-Term Notes, except in the event that use of the book-
        entry system for the Medium-Term Notes is discontinued.

             To facilitate subsequent transfers, all Medium-Term Notes
        deposited by Participants with DTC are registered in the name of CEDE
        & Co.  The deposit of Medium-Term Notes with DTC and their
        registration in the name of CEDE & Co. effect no change in beneficial
        ownership.  DTC has no knowledge of the actual Beneficial Owners of
        the Medium-Term Notes; DTC's records reflect only the identity of the
        Direct Participants to whose accounts such Medium-Term Notes are
        credited, which may or may not be the Beneficial Owners.  The
        Participants will remain responsible for keeping account of their
        holdings on behalf of their customers.

             Conveyance of notices and other communications by DTC to Direct
        Participants, by Direct Participants to Indirect Participants, and by
        Direct Participants and Indirect Participants to Beneficial Owners
        will be governed by arrangements among them, subject to any statutory
        or regulatory requirements as may be in effect from time to time. 

             If the Medium-Term Notes of any issue are redeemable prior to the
        maturity date, redemption notices shall be sent to CEDE & Co.  If less
        than all of the Medium-Term Notes of any issue are being redeemed,
        DTC's practice is to determine by lot the amount of the interest of
        each Direct Participant in such issue to be redeemed. 

             Neither DTC nor CEDE & Co. will consent or vote with respect to
        the Medium-Term Notes.  Under its usual procedures, DTC mails an
        Omnibus Proxy to the Company as soon as possible after the record
        date. The Omnibus Proxy assigns CEDE & Co.'s consenting or voting
        rights to those Direct Participants to whose accounts the Medium-Term
        Notes are credited on the record date (identified in a listing
        attached to the Omnibus Proxy). 

             Principal and interest payments on the Medium-Term Notes will be
        made to DTC. DTC's practice is to credit Direct Participants' accounts
        on the date on which interest is payable in accordance with their
        respective holdings shown on DTC's records, unless DTC has reason to
        believe that it will not receive payment on such payment date.
        Payments by Participants to Beneficial Owners will be governed by
        standing instructions and customary practices, as is the case with
        securities held for the accounts of customers in bearer form or
        registered in "street name", and will be the responsibility of such
        Participant and not of DTC, the Mortgage Trustees (as defined below),
        the Indenture Trustee (as defined below) or the Company, subject to
        any statutory or regulatory requirements as may be in effect from time
        to time.  Payment of principal and interest to DTC is the
        responsibility of the Company and the Corporate Trustee (as defined
        below) or the Indenture Trustee, as the case may be.  Disbursement of
        such payments to Direct Participants shall be the responsibility of
        DTC, and disbursement of such payments to the Beneficial Owners shall
        be the responsibility of Direct and Indirect Participants.

             DTC may discontinue providing services as securities depository
        with respect to the Medium-Term Notes at any time by giving reasonable
        notice to the Company, the Mortgage Trustees and the Indenture
        Trustee.

                                ----------------------

             None of the Company or the Mortgage Trustees or the Indenture
        Trustee will have any responsibility or liability for any aspect of
        the records relating to or payments made on account of beneficial
        interests in the Medium-Term Notes or for maintaining, supervising or
        reviewing any records relating to such beneficial interests.



                           DESCRIPTION OF THE SECURED NOTES

        GENERAL

             The Secured Notes, which comprise a series of the Company's First
        Mortgage Bonds ("Bonds"), are to be issued under the Company's
        Mortgage and Deed of Trust, dated as of July 1, 1946, to Bankers Trust
        Company ("Corporate Trustee") and R.G. Page (Stanley Burg, successor),
        as trustees ("Mortgage Trustees"), as supplemented by twenty
        supplemental indentures, all of which are collectively referred to as
        the "Mortgage". 

             The statements herein concerning the Secured Notes and the
        Mortgage are merely an outline and do not purport to be complete. They
        make use of terms defined in the Mortgage and are qualified in their
        entirety by express reference to the cited Sections and Articles. They
        may be changed with respect to any Secured Note by the applicable
        Pricing Supplement, which should be read in conjunction with this
        description.

             The Secured Notes will be offered on a continuing basis and each
        Secured Note will mature on such date, not less than nine months or
        more than 30 years from its date of issue, as selected by the
        purchaser and agreed to by the Company. 

             The Pricing Supplement relating to each Secured Note will set
        forth the principal amount, interest rate, issue price and Agent's
        commission, original issue and maturity dates, redemption provisions,
        if any, and other material terms of such Secured Note. 

        INTEREST

             Interest on each Secured Note will be payable semi-annually in
        arrears on June 1 and December 1 of each year and at maturity.

             Interest payable on any interest payment date for any Secured
        Note will be payable to the person in whose name such Secured Note is
        registered on the record date with respect to such interest payment
        date, which shall be the May 15 or November 15 (whether or not a
        business day), as the case may be, next preceding such interest
        payment date; provided that, (i) if the original issue date of any
        Secured Note is after a record date and before the corresponding
        interest payment date, such Secured Note shall bear interest from the
        original issue date, but payment of interest shall commence on the
        second interest payment date succeeding the original issue date, and
        (ii) interest payable on the maturity date will be payable to the
        person to whom the principal thereof shall be payable. 

             Unless otherwise indicated in the applicable Pricing Supplement,
        interest on the Secured Notes will be computed on the basis of a
        360-day year consisting of twelve 30-day months. 

        FORM, EXCHANGE AND PAYMENT

             The Secured Notes will be issued in fully registered form in
        denominations of $1,000 or any amount in excess thereof that is an
        integral multiple of $1,000. The Secured Notes will be exchangeable at
        the office of Bankers Trust Company in New York City, without charge
        other than taxes or other governmental charges incident thereto.
        Principal, premium, if any, and interest will be payable at such
        office. (See Twentieth Supplemental, Sec. 1.01.)  Notwithstanding the
        foregoing, for so long as the Secured Notes shall be held by the
        Depository or its nominee, owners of beneficial interests in the
        Secured Notes will not be entitled to have any individual Secured
        Notes registered in their names, and transfers of beneficial interests
        and payments of principal, premium, if any, and interest will be made
        as described herein under "Book-Entry System". 

        REDEMPTION

             To the extent, if any, provided in the Pricing Supplement
        relating to any Secured Note, such Secured Note will be redeemable, on
        30 days' notice, in whole or in part, at any time on or after the
        initial redemption date, if any, fixed at the time of sale and set
        forth in the applicable Pricing Supplement.  On or after the initial
        redemption date, such Secured Note will be redeemable in whole or in
        part, at the option of the Company at a redemption price determined in
        accordance with the following paragraph, plus accrued interest to the
        date fixed for redemption. 

             The redemption price for each Secured Note subject to redemption
        shall, for the twelve-month period commencing on the initial
        redemption date, be equal to a certain percentage of the principal
        amount of such Secured Note and thereafter, shall decline for the
        twelve-month period commencing on each anniversary of the initial
        redemption date by a percentage of principal amount ("Reduction
        Percentage") until the redemption price shall be 100% of the principal
        amount. The initial redemption date and price and any Reduction
        Percentage with respect to each Secured Note subject to redemption
        will be fixed at the time of sale and set forth in the applicable
        Pricing Supplement.

             If so specified in the Pricing Supplement relating to any Secured
        Note, the Company may not, prior to the redemption limitation date, if
        any, set forth in such Pricing Supplement, redeem such Secured Note as
        contemplated above as a part of, or in anticipation of, any refunding
        operation by the application, directly or indirectly, of moneys
        borrowed having an effective interest cost to the Company (calculated
        in accordance with generally accepted financial practice) of less than
        the effective interest cost to the Company (similarly calculated) of
        such Secured Note. 

             If, at the time the notice of redemption shall be given, the
        redemption money shall not be on deposit with the Corporate Trustee,
        the redemption may be made subject to the receipt of such money before
        the date fixed for redemption, and such notice shall be of no effect
        unless such money shall be so received. 

             Unless otherwise indicated in the applicable Pricing Supplement,
        the Secured Notes will not be subject to any sinking fund. 

        PROVISIONS FOR MAINTENANCE OF PROPERTY

             While the Mortgage contains provisions for the maintenance of the
        Mortgaged and Pledged Property, the Mortgage does not permit
        redemption of Bonds pursuant to these provisions.

        SECURITY

             The Secured Notes together with all other Bonds now or hereafter
        issued under the Mortgage will be secured by the Mortgage, which
        constitutes, in the opinion of Bruce B. Samson, Esq., General Counsel
        of the Company, a first mortgage lien on all of the gas plants,
        distribution systems and other materially important physical
        properties of the Company (except as stated below), subject to (a)
        leases of minor portions of the Company's property to others for uses
        which, in the opinion of such Counsel, do not interfere with the
        Company's business, (b) leases of certain property of the Company not
        used in its gas utility business or the gas by-product business, (c)
        excepted encumbrances, and (d) minor defects and encumbrances
        customarily found in properties of like size and character which, in
        the opinion of such Counsel, do not impair the use of such properties
        by the Company. There are excepted from the lien all cash and
        securities; certain equipment, apparatus, materials or supplies;
        aircraft, automobiles and other vehicles; receivables, contracts,
        leases and operating agreements; timber, minerals, mineral rights and
        royalties and all natural gas and oil production property.

             The Mortgage contains provisions subjecting after-acquired
        property (subject to pre-existing liens) to the lien thereof, subject
        to limitations in the case of consolidation, merger or sale of
        substantially all of the Company's assets.  (See Mortgage, Art. XVI.)

             The Mortgage provides that the Mortgage Trustees shall have a
        lien upon the mortgaged property, prior to that of the Bonds, for the
        payment of their reasonable compensation and expenses and for
        indemnity against certain liabilities.  (See Mortgage, Sec. 96).

        ISSUANCE OF ADDITIONAL BONDS

             Bonds may be issued from time to time on the basis of (1) 60% of
        property additions, after adjustments to offset retirements (see
        "Modification of the Mortgage -- Issuance of Additional Bonds" below);
        (2) retirement of Bonds or qualified lien bonds; or (3) deposit of
        cash. With certain exceptions in the case of (2) above, the issuance
        of Bonds is subject to adjusted net earnings before income taxes for
        12 consecutive months out of the preceding 15 months being at least
        twice the annual interest requirements on all Bonds at the time
        outstanding, including the additional issue, and all indebtedness of
        prior rank.

             Property additions generally include gas, electric, steam or hot
        water property or gas by-product property acquired after March 31,
        1946, but may not include securities, airplanes, automobiles or other
        vehicles, or natural gas transmission lines or natural gas and oil
        production property.  As of June 30, 1996, approximately $341 million
        of property additions and $93 million of retired Bonds were available
        for use as the basis for the issuance of Bonds.

             The Mortgage contains certain restrictions upon the issuance of
        Bonds against property subject to liens.  

             The Secured Notes will be issued against property additions and
        retired Bonds.

             (See Mortgage, Secs. 4-7, 20-30 and 46, and Third Supplemental,
        Secs. 3 and 4.)

        RELEASE AND SUBSTITUTION OF PROPERTY

             Property may be released against (1) deposit of cash or, to a
        limited extent, purchase money mortgages, (2) property additions, or
        (3) waiver of the right to issue Bonds without applying any earnings
        test. Cash so deposited and cash deposited against the issuance of
        additional bonds may be withdrawn upon the bases stated in (2) and (3)
        above.  When property released is not funded property, property
        additions used to effect the release may again, in certain cases,
        become available as credits under the Mortgage, and the waiver of the
        right to issue Bonds to effect the release may, in certain cases,
        cease to be effective as such a waiver. Similar provisions are in
        effect as to cash proceeds of such property. The Mortgage contains
        special provisions with respect to qualified lien bonds pledged and
        the disposition of moneys received on pledged prior lien bonds. (See
        Mortgage, Secs. 5, 31, 32, 37, 46 to 50, 59 to 61, 100 and 118.)

        DEFAULTS AND NOTICE THEREOF

             Defaults are:  default in payment of principal, default for 60
        days in payment of interest or of installments of funds for retirement
        of Bonds; certain defaults with respect to qualified lien bonds;
        certain events in bankruptcy, insolvency or reorganization; and
        default for 90 days after notice in the case of a breach of any other
        covenant.  The Mortgage Trustees may withhold notice of default
        (except in payment of principal, interest or any fund for the
        retirement of Bonds) if they think it in the interest of the
        Bondholders.  (See Mortgage, Secs. 65 and 66).

             Holders of 25% of the Bonds may declare the principal and the
        interest due on default, but a majority may annul such declaration if
        such default has been cured.  No holder of Bonds may enforce the lien
        of the Mortgage without giving the Mortgage Trustees written notice of
        a default and unless holders of 25% of the Bonds have requested the
        Mortgage Trustees to act and offered them reasonable opportunity to
        act and the Mortgage Trustees have failed to act.  The Mortgage
        Trustees are not required to risk their funds or incur personal
        liability if there is reasonable ground for believing that the
        repayment is not reasonably assured.  Holders of a majority of the
        Bonds may direct the time, method and place of conducting any
        proceedings for any remedy available to the Mortgage Trustees, or
        exercising any trust or power conferred upon the Mortgage Trustees,
        but the Mortgage Trustees are not required to follow such direction if
        not sufficiently indemnified for expenditures.  (See Mortgage, Secs.
        67, 71, 80 and 94.)

        EVIDENCE TO BE FURNISHED TO THE MORTGAGE TRUSTEES

             Compliance with Mortgage provisions is evidenced by written
        statements of the Company's officers or persons selected by the
        Company.  In certain major matters the accountant, engineer, appraiser
        or other expert must be independent.  Various certificates and other
        papers, including an annual certificate with reference to compliance
        with the terms of the Mortgage and absence of defaults, are required
        to be filed annually and upon the occurrence of certain events.  (See
        Mortgage, Secs. 38-46.)

        MODIFICATION OF THE MORTGAGE

             The rights of the Bondholders may be modified with the consent of
        70% of the Bonds and, if less than all series of Bonds are affected,
        the consent also of 70% of Bonds of each series affected.  The Company
        has the right, without any consent or other action by holders of any
        series of Bonds, to substitute 66 % for 70%.  In general, no
        modification of the terms of payment of principal and interest,
        affecting the lien of the Mortgage or reducing the percentage required
        for modification (except as provided above) will be effective against
        any Bondholder without his consent.  (See Mortgage, Art. XIX and Ninth
        Supplemental, Sec.6.)

             The Company has reserved the right to amend the Mortgage, without
        any consent or other action by holders of the Bonds of the Nineteenth
        Series or of Bonds of any subsequently created series (including the
        Secured Notes), in the following respects:

             Release and Substitution of Property

             To permit the release of property at the lesser of its cost or
        its fair value at the time that such property became funded property,
        rather than at its fair value at the time of its release; and to
        facilitate the release of unfunded property.  (See Mortgage, Secs. 3,
        59 and 60 and Eighteenth Supplemental, Sec. 2.03.)

             Issuance of Additional Bonds

             To clarify that (i) for purposes of determining annual interest
        requirements, interest on Bonds or other indebtedness bearing interest
        at a variable interest rate shall be computed at the average of the
        interest rates borne by such Bonds or other indebtedness during the
        period of calculation or, if such Bonds or other indebtedness shall
        have been issued after such period or shall be the subject of pending
        applications, interest shall be computed at the initial rate borne
        upon issuance, and (ii) no extraordinary items shall be included in
        operating expenses or deducted from revenues or other income in
        calculating adjusted net earnings (See Mortgage, Sec. 7); and to
        revise the basis for the issuance of additional Bonds from 60% of
        property additions, after adjustments to offset retirements, to 70%.
        (See Mortgage, Secs. 25, 26, 59 and 61 and Eighteenth Supplemental,
        Secs. 2.01 and 2.02)

        THE CORPORATE TRUSTEE

             Bankers Trust Company also serves as the Indenture Trustee under
        the Indenture under which the Unsecured Notes are issued. 

                          DESCRIPTION OF THE UNSECURED NOTES

        GENERAL

             The Unsecured Notes are to be issued under an Indenture, dated as
        of June 1, 1991 ("Indenture"), between the Company and Bankers Trust
        Company, as trustee ("Indenture Trustee").

             The statements herein concerning the Unsecured Notes and the
        Indenture are merely an outline and do not purport to be complete. 
        They make use of terms defined in the Indenture and are qualified in
        their entirety by express reference to the cited Sections and
        Articles. They may be changed with respect to any Unsecured Note by
        the applicable Pricing Supplement, which should be read in conjunction
        with this description.

             The Indenture provides that debt securities (including the
        Unsecured Notes and including both interest bearing and original issue
        discount securities) may be issued thereunder, without limitation as
        to aggregate principal amount. (See Indenture, Sec. 301.)  All debt
        securities heretofore or hereafter issued under the Indenture
        (including the Unsecured Notes) are collectively referred to as the
        "Indenture Securities". The Indenture does not limit the amount of
        other debt, secured or unsecured, which may be issued by the Company.
        The Unsecured Notes will rank pari passu with all other unsecured and
        unsubordinated indebtedness of the Company. Substantially all of the
        gas plants, distribution systems and other materially important
        physical properties of the Company are subject to the lien of the
        Mortgage securing the Company's Bonds. (See "Description of the
        Secured Notes Security and   Issuance of Additional Bonds", above.) 

             The Unsecured Notes will be offered on a continuing basis, and
        each Unsecured Note will mature on such date, not less than nine
        months nor more than 30 years from its date of issue, as selected by
        the purchaser and agreed to by the Company.

             The Pricing Supplement relating to any Unsecured Note will set
        forth the principal amount, interest rate, issue price and Agent's
        commission, original issue and maturity dates, redemption provisions,
        if any, and other material terms of such Unsecured Note. 

        INTEREST

             Interest on each Unsecured Note will be payable semi-annually in
        arrears on June 1 and December 1 of each year and at maturity. 

             Interest payable on any interest payment date for any Unsecured
        Note will be payable to the person in whose name such Unsecured Note
        is registered on the record date with respect to such interest payment
        date, which shall be the May 15 or November 15 (whether or not a
        business day), as the case may be, next preceding such interest
        payment date; provided that, (i) if the original issue date of any
        Unsecured Note is after a record date and before the corresponding
        interest payment date, such Unsecured Note will bear interest from the
        original issue date but payment of interest shall commence on the
        second interest payment date succeeding the original issue date, and
        (ii) interest payable on the maturity date will be payable to the
        person to whom the principal thereof shall be payable.

             Unless otherwise indicated in the applicable Pricing Supplement,
        interest on the Unsecured Notes will be computed on the basis of a
        360-day year consisting of twelve 30-day months. 

        FORM, EXCHANGE AND PAYMENT

             The Unsecured Notes will be issued in fully registered form in
        denominations of $1,000 or any amount in excess thereof that is an
        integral multiple of $1,000. The Unsecured Notes will be exchangeable
        at the office of Bankers Trust Company in New York City, without
        charge other than taxes or other governmental charges incident
        thereto. Principal, premium, if any, and interest will be payable at
        such office. Notwithstanding the foregoing, for so long as the
        Unsecured Notes shall be held by the Depository or its nominee, owners
        of beneficial interests in the Unsecured Notes will not be entitled to
        have any individual Unsecured Notes registered in their names, and
        transfers of beneficial interests and payments of principal, premium,
        if any, and interest will be made as described herein under
        "Book-Entry System". 


        REDEMPTION

             To the extent, if any, provided in the Pricing Supplement
        relating to any Unsecured Note, such Unsecured Note will be
        redeemable, on not less than 30 days' notice, in whole or in part, at
        any time on or after the initial redemption     date, if any, fixed at
        the time of sale and set forth in the applicable Pricing Supplement. 
        On or after the initial redemption date, such Unsecured Note will be
        redeemable in whole or in part, at the option of the Company, at a
        redemption price determined in accordance with the following
        paragraph, plus accrued interest to the date fixed for redemption.

             The redemption price for each Unsecured Note subject to
        redemption shall, for the twelve-month period commencing on the
        initial redemption date, be equal to a certain percentage of the
        principal amount of such Unsecured Note and, thereafter, shall decline
        for the twelve-month period commencing on each anniversary of the
        initial redemption date by a percentage of principal amount
        ("Reduction Percentage") until the redemption price shall be 100% of
        the principal amount. The initial redemption price and date and any
        Reduction Percentage with respect to each Unsecured Note subject to
        redemption will be fixed at the time of sale and set forth in the
        applicable Pricing Supplement.

             If so specified in the Pricing Supplement relating to any
        Unsecured Note, the Company may not, prior to the redemption
        limitation date, if any, set forth in such Pricing Supplement, redeem
        such Unsecured Note as contemplated above as a part of, or in
        anticipation of, any refunding operation by the application, directly
        or indirectly, of moneys borrowed having an effective interest cost to
        the Company (calculated in accordance with generally accepted
        financial practice) of less than the effective interest cost to the
        Company (similarly calculated) of such Unsecured Note. 

             If, at the time the notice of redemption shall be given, the
        redemption money shall not be on deposit with the Indenture Trustee,
        the redemption shall be made subject to the receipt of such money on
        or before the date fixed for redemption, and such notice shall be of
        no effect unless such money shall be so received. (See Indenture, Art.
        Four.)

             Unless otherwise indicated in the applicable Pricing Supplement,
        the Unsecured Notes will not be subject to any sinking fund.

        EVENTS OF DEFAULT AND NOTICE THEREOF

             Events of Default are: default for three Business Days in payment
        of principal; default for 60 days in payment of interest; certain
        events in bankruptcy, insolvency or reorganization; default for 90
        days after notice in the case of a breach of any other covenant; and
        any other Event of Default specified with respect to the Indenture
        Securities of a particular series. No Event of Default with respect to
        a series of Indenture Securities necessarily constitutes an Event of
        Default with respect to the Indenture Securities of any other series.
        The Indenture Trustee may withhold notice of default (except in
        payment of principal, interest or any funds for the retirement of
        Indenture Securities) if it, in good faith, determines that
        withholding of such notice is in the interest of the Holders of the
        Indenture Securities. (See Indenture, Secs. 801 and 903.) 

             Either the Indenture Trustee or the Holders of not less than 33%
        in principal amount (or such lesser amount as may be provided in the
        case of discount Indenture Securities) of the outstanding Indenture
        Securities of all defaulted series, considered as one class, may
        declare the principal and interest on such series due on default, but
        the Company may annul such default by effecting its cure and paying
        overdue interest and principal.  No Holder of Indenture Securities may
        enforce the Indenture without having given the Indenture Trustee
        written notice of default, and unless the Holders of a majority of the
        Indenture Securities of all defaulted series, considered as one class,
        shall have requested the Indenture Trustee to act and offered
        reasonable indemnity, and for 60 days the Indenture Trustee shall have
        failed to act.  But, each Holder has an absolute right to receive
        payment of principal and interest when due and to institute suit for
        the enforcement of such payment. The Indenture Trustee is not required
        to risk its funds or incur any financial liability if it shall have
        reasonable grounds for believing that repayment is not reasonably
        assured. The Holders of a majority of the Indenture Securities of all
        defaulted series, considered as one class, may direct the time, method
        and place of conducting any proceedings for any remedy available to
        the Indenture Trustee, or exercising any trust or power conferred on
        the Indenture Trustee, with respect to the Indenture Securities of
        such series, but the Indenture Trustee is not required to follow such
        direction if not sufficiently indemnified and the Indenture Trustee
        may take any other action it deems proper which is not inconsistent
        with such direction. (See Indenture, Secs. 802, 807, 808, 812 and
        902.) 

        EVIDENCE TO BE FURNISHED TO THE INDENTURE TRUSTEE

             Compliance with Indenture provisions will be evidenced by written
        statements of the Company's officers. An annual certificate with
        reference to compliance with the covenants and conditions of the
        Indenture and the absence of defaults is required to be filed with the
        Indenture Trustee. (See Indenture, Sec.1004.) 

        MODIFICATION OF THE INDENTURE

             The rights of the Holders of the Indenture Securities may be
        modified with the consent of the Holders of a majority of the
        Indenture Securities of all series or Tranches, as defined below,
        affected, considered as one class. However, certain specified rights
        of the Holders of Indenture Securities may be modified without the
        consent of the Holders if such modification would not be deemed
        adversely to affect their interests in any material respect. In
        general, no modification of the terms of payment of principal and
        interest, no reduction of the percentage in principal amount of the
        Indenture Securities outstanding under such series required to consent
        to any supplemental indenture or waiver under the Indenture, no
        reduction of such percentage necessary for quorum and voting, and no
        modification of certain of the provisions in the Indenture relating to
        supplemental indentures, waivers of certain covenants and waivers of
        past defaults is effective against any Holder of Indenture Securities
        without his consent.  "Tranche" means a group of Indenture Securities
        which are of the same series and have identical terms except as to
        principal amount and/or date of issuance.  (See Indenture, Art.
        Twelve.)

        THE INDENTURE TRUSTEE

             Bankers Trust Company also serves as the Corporate Trustee under
        the Mortgage under which the Secured Notes are issued.


                                 PLAN OF DISTRIBUTION

             The Medium-Term Notes are being offered on a continuing basis for
        sale by the Company through the Agents which have agreed to use their
        best efforts to solicit purchases of the Medium-Term Notes.  The
        initial Agents are Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner
        & Smith Incorporated and PaineWebber Incorporated.  Should the Company
        designate other persons to act as Agents, the names of such persons
        will be disclosed in a Pricing Supplement.  The Company will pay each
        Agent a commission which, depending on the maturity of the Medium-Term
        Notes, will range from .125% to .750% of the principal amount of any
        Medium-Term Note sold through such Agent.  The Company may also sell
        Medium-Term Notes to any Agent, as principal, at a discount from the
        principal amount thereof, and the Agent may later resell such Medium-
        Term Notes to investors and other purchasers at varying prices related
        to prevailing market prices at the time of resale as determined by
        such Agent or, if so agreed, at a fixed public offering price.  In the
        case of sales to any Agent as principal, such Agent may utilize a
        selling or dealer group in connection with resales.  An Agent may sell
        Medium-Term Notes it has purchased as principal to any dealer at a
        discount and, unless otherwise specified in the applicable Pricing
        Supplement, such discount allowed to any dealer will not be in excess
        of the discount to be received by such Agent from the Company.  After
        the initial public offering of Medium-Term Notes to be resold to
        investors and other purchasers, the public offering price (in the case
        of a fixed price public offering), concession and discount may be
        changed.  The Medium-Term Notes also may be sold by the Company
        directly to purchasers.  No commission will be payable to the Agents
        on Medium-Term Notes sold directly by the Company.

             The Company reserves the right to withdraw, cancel or modify the
        offer made hereby without notice and may reject, in whole or in part,
        offers to purchase Medium-Term Notes whether placed directly with the
        Company or through one of the Agents.  Each Agent will have the right,
        in its discretion reasonably exercised, to reject any offer to
        purchase Medium-Term Notes received by it, in whole or in part.

             Payment of the purchase price of the Medium-Term Notes will be
        required to be made in immediately available funds in New York City on
        the date of settlement.

             No Medium-Term Note will have an established trading market when
        issued.  The Medium-Term Notes will not be listed on any securities
        exchange.  Each of the Agents may from time to time purchase and sell
        Medium-Term Notes in the secondary market, but is not obligated to do
        so, and there can be no assurance that there will be a secondary
        market for the Medium-Term Notes or liquidity in the secondary market
        if one develops.  From time to time, each of the Agents may make a
        market in the Medium-Term Notes.

             The Agents may be deemed to be "underwriters" within the meaning
        of the Securities Act of 1933, as amended.  The Company has agreed to
        indemnify each of the Agents against, or to make contributions
        relating to, certain liabilities, including liabilities under such
        Act.  The Company has agreed to reimburse each of the Agents for
        certain expenses.  Each of the Agents may engage in transactions with,
        or perform services for, the Company in the ordinary course of
        business.


                                       EXPERTS

             The financial statements incorporated in this Prospectus by
        reference from the Company's Annual Report on Form 10-K have been
        audited by Deloitte & Touche LLP, independent auditors, as stated in
        their report, which is incorporated herein by reference, and have been
        so incorporated in reliance upon the report of such firm given upon
        their authority as experts in accounting and auditing.

             With respect to the unaudited interim financial information which
        is incorporated herein by reference from the Company's Quarterly
        Reports on Form 10-Q since the Company's latest Annual Report on Form
        10-K, which is incorporated herein by reference, Deloitte & Touche LLP
        have applied limited procedures in accordance with professional
        standards for review of such information.  However, as stated in their
        reports included in the Company's Quarterly Reports on Form 10-Q for
        such quarterly periods, and incorporated herein by reference, they did
        not audit and they do not express an opinion on that interim financial
        information.  Accordingly, the degree of reliance on their reports on
        such information should be restricted in light of the limited nature
        of the review procedures applied.  Deloitte & Touche LLP are not
        subject to the liability provisions of Section 11 of the Securities
        Act of 1933 for their reports on the unaudited interim financial
        information because such reports are not "reports" or a "part" of the
        registration statement prepared or certified by an accountant within
        the meaning of Sections 7 and 11 of such Act.

             The statements made as to matters of law and legal conclusions in
        the documents incorporated in this Prospectus by reference and under
        "Description of the Secured Notes" herein have been reviewed by Bruce
        B. Samson, Esquire, Portland, Oregon.  Mr. Samson is General Counsel
        of the Company.  These statements and conclusions are set forth in
        reliance upon the opinion of Mr. Samson given upon his authority as an
        expert.  The statements made as to matters of law and legal
        conclusions under "Description of the Unsecured Notes" herein have
        been reviewed by Messrs. Reid & Priest LLP, New York, New York.  These
        statements and conclusions are set forth in reliance upon the opinion
        of Messrs. Reid & Priest LLP given upon their authority as experts. 
        As of September 30, 1996, Mr. Samson owned 8,700 shares of the
        Company's common stock (including approximately 2,612 shares held in
        Company's Retirement K Savings Plan at June 30, 1996) and has been
        granted options to purchase 6,091 shares at a price of $16.59, 3,000
        shares at a price of $24.00 per share and 7,500 shares at a price of
        $20.92 per share, the market prices of the shares on the dates of such
        grants as adjusted to reflect a 3-for-2 split of the Company's Common
        Stock.  Mr. Samson's shares, including the underlying shares subject
        to options granted to him, have a current fair market value of
        approximately $632,000.


                                       LEGALITY

             The legality of the Medium-Term Notes will be passed upon for the
        Company by Mr. Samson and by Messrs. Reid & Priest LLP, New York, New
        York, and for the agents by Messrs. Simpson Thacher & Bartlett (a
        partnership which includes professional corporations), New York, New
        York.  However, all matters pertaining to titles, the lien and
        enforceability of the Mortgage, franchises and all other matters of
        Oregon and Washington law, will be passed upon only by Mr. Samson.


    

     =====================================  =============================
     NO DEALER, SALESMAN OR ANY OTHER
     PERSON HAS BEEN AUTHORIZED TO GIVE
     ANY INFORMATION OR TO MAKE ANY
     REPRESENTATIONS NOT CONTAINED IN
     THIS PROSPECTUS, AND, IF GIVEN OR
     MADE, SUCH INFORMATION OR
     REPRESENTATION MUST NOT BE RELIED
     UPON AS HAVING BEEN AUTHORIZED BY
     THE COMPANY. THIS PROSPECTUS DOES
     NOT CONSTITUTE AN OFFER OF ANY
     SECURITIES OTHER THAN THOSE TO WHICH
     IT RELATES OR AN OFFER TO SELL, OR A                $165,000,000
     SOLICITATION OF AN OFFER TO BUY, TO
     ANY PERSON IN ANY JURISDICTION WHERE
     SUCH AN OFFER OR SOLICITATION WOULD
     BE UNLAWFUL.  NEITHER THE DELIVERY
     OF THIS PROSPECTUS NOR ANY SALE MADE
     HEREUNDER SHALL, UNDER ANY
     CIRCUMSTANCES, CREATE ANY
     IMPLICATION THAT THE INFORMATION
     CONTAINED HEREIN IS CORRECT AS OF
     ANY TIME SUBSEQUENT TO THE DATE                      NORTHWEST
     HEREOF.                                             NATURAL GAS
                                                           COMPANY

     TABLE OF CONTENTS

                                                  SECURED MEDIUM-TERM NOTES,
     Available Information . . . . .   2                   SERIES B
                                               (SERIES OF FIRST MORTGAGE BONDS)
     Incorporation of Certain                                AND
       Documents by Reference  . . .   2         UNSECURED MEDIUM-TERM NOTES,
                                                           SERIES B
     The Company . . . . . . . . . .   2
                                                   Due from Nine Months to
     Use of Proceeds and                         30 Years from Date of Issue
       Financing Program . . . . . .   2

     Ratio of Earnings to  . . . . .                 -------------------
       Fixed Charges . . . . . . . .   3             P R O S P E C T U S
                                                     -------------------
     Book-Entry System . . . . . . .   3

     Description of the
       Secured Notes . . . . . . . .   5             MERRILL LYNCH & CO.

     Description of the                            PAINEWEBBER INCORPORATED
       Unsecured Notes . . . . . . .   8

     Plan of Distribution  . . . . .  10

     Experts . . . . . . . . . . . .  10  
                                        
     Legality  . . . . . . . . . . .   
                                      11              November __, 1996


     ===================================     ===================================


 


                                       PART II

                        INFORMATION NOT REQUIRED IN PROSPECTUS


        ITEM 14.                             OTHER EXPENSES OF ISSUANCE AND
                                             DISTRIBUTION (ESTIMATED, EXCEPT
                                             SEC FILING FEE).

                Filing Fee-Securities and Exchange
                  Commission  . . . . . . . . . . . . .   $ 45,455

                Fees of Trustees, including counsel
                  and authentication fees . . . . . . .     10,000
                Legal fees  . . . . . . . . . . . . . .    100,000

                Accounting fees and expenses  . . . . .     15,000

                Rating Agencies' fees   . . . . . . . .     60,000
                Printing and engraving  . . . . . . . .     10,000

                Miscellaneous expense   . . . . . . . .     11,545
                                                          --------
                  Total expenses  . . . . . . . . . . .   $252,000
                                                          ========


        ITEM 15.  INDEMDEMNIFICATION OF DIRECTORS AND OFFICERS.

        The Oregon Business Corporation Act (the "Act") provides, in general,
        that a director or officer of a corporation who has been or is
        threatened to be made a defendant in a legal proceeding because that
        person is or was a director or officer of the corporation:

        (1)  shall be indemnified by the corporation for all expenses of such
        litigation when the director or officer is wholly successful on the
        merits or otherwise;

        (2)  may be indemnified by the corporation for the expenses,
        judgments, fines and amounts paid in settlement of such litigation
        (other than a derivative lawsuit) if he or she acted in good faith and
        in a manner reasonably believed to be in, or at least not opposed to,
        the best interests of the corporation (and, in the case of a criminal
        proceeding, had no reasonable cause to believe the conduct was
        unlawful); and

        (3)  may be indemnified by the corporation for expenses of a
        derivative lawsuit (a suit by a shareholder alleging a breach by a
        director or officer of a duty owed to the corporation) if he or she
        acted in good faith and in a manner reasonably believed to be in, or
        at least not opposed to, the best interests of the corporation, pro-
        vided the director or officer is not adjudged liable to the
        corporation.

        The Act also authorizes the advancement of litigation expenses to a
        director or officer upon receipt of a written affirmation of the
        director's or officer's good faith belief that the standard of conduct
        in Section (2) or (3) above has been met and an undertaking by such
        director or officer to repay such expenses if it is ultimately
        determined that he or she did not meet that standard and, therefore,
        is not entitled to be indemnified.  The Act also provides that the
        indemnification provided thereunder shall not be deemed exclusive of
        any other rights to which those indemnified may be entitled under any
        bylaw, agreement, vote of shareholders or disinterested directors or
        otherwise.

        The Company's Bylaws provide that the Company shall indemnify
        directors and officers to the fullest extent permitted under the Act,
        thus making mandatory the discretionary indemnification authorized by
        the Act.

        The Company's Restated Articles of Incorporation provide that the
        Company shall indemnify its officers and directors to the fullest
        extent permitted by law, which may be broader than the indemnification
        authorized by the Act.

        The Company's shareholders have approved and the Company has entered
        into indemnity agreements with its directors and officers which
        provide for indemnity to the fullest extent permitted by law and also
        alter or clarify the statutory indemnity in the following respects:

        (1)  prompt advancement of litigation expenses is provided if the
        director or officer makes the required affirmation and undertaking;

        (2)  the director or officer is permitted to enforce the indemnity
        obligation in court and the burden is on the Company to prove that the
        director or officer is not entitled to indemnification;

        (3)  indemnity is explicitly provided for judgments and settlements in
        derivative actions;

        (4)  prompt indemnification is provided unless a determination is made
        that the director or officer is not entitled to indemnification; and

        (5)  partial indemnification is permitted if the director or officer
        is not entitled to full indemnification.

        The Company maintains in effect a policy of insurance providing for
        reimbursement to the Company of payments made to directors and
        officers as indemnity for damages, judgments, settlements, costs and
        expenses incurred by them which the Company may be required or
        permitted to make according to applicable law, common or statutory, or
        under provisions of its Restated Articles of Incorporation, Bylaws or
        agreements effective under such laws.

        ITEM 16.                             LIST OF EXHIBITS.

        1        -    Form of Distribution Agreement.

        4(a)*    -    Copy of Mortgage and Deed of Trust, dated as of July 1,
                      1946, to Bankers Trust Company and R.G. Page (to whom
                      Stanley Burg is now successor), Trustees (filed as
                      Exhibit 7(j) in File No. 2-6494), together with
                      Indentures supplemental thereto Nos. 1 through 14,
                      dated, respectively, as of June 1, 1949, March 1, 1954,
                      April 1, 1956, February 1, 1959, July 1, 1961, January
                      1, 1964, March 1, 1966, December 1, 1969, April 1,
                      1971, January 1, 1975, December 1, 1975, July 1, 1981,
                      June 1, 1985, and November 1, 1985 (filed as Exhibit
                      4(d) in File No. 33-1929); No. 15, dated as of July 1,
                      1986 (filed as Exhibit (4)(c) in File No. 33-24168);
                      Nos. 16, 17 and 18, dated, respectively, as of November
                      1, 1988, October 1, 1989 and July 1, 1990 (filed as
                      Exhibit (4)(c) in File No. 33-40482); No. 19, dated as
                      of June 1, 1991 (filed as Exhibit 4(c) in File No. 33-
                      64014; and No. 20, dated as of June 1, 1993 (filed as
                      Exhibit 4(c) in File No. 33-53795).

        4(b)*    -    Copy of Indenture, dated as of June 1, 1991, to Bankers
                      Trust Company, Trustee, relating to the Unsecured Notes
                      (filed as Exhibit 4(e) in File No. 33-64014).

        4(c)*    -    Form of Officers' Certificate establishing series of
                      Unsecured Notes and Form of Instructions for both
                      Secured and Unsecured Notes (filed as Exhibit 4(f) in
                      File No. 33-64014).

        5(a)     -    Opinion of Bruce B. Samson, Esquire.

        5(b)     -    Opinion of Messrs. Reid & Priest LLP.

        12*      -    Computation of Ratio of Earnings to Fixed Charges
                      (filed as Exhibit 12 to Form 10-Q for the quarter ended
                      June 30, 1996).

        15       -    Letter of Deloitte & Touche LLP dated October 31, 1996
                      regarding unaudited interim financial information.

        23       -    Consent of Deloitte & Touche LLP.  (The consents of
                      Bruce B. Samson, Esquire, and of Reid & Priest LLP are
                      included in their opinions filed, respectively, as
                      Exhibits 5(a) and 5(b)).

        24       -    Power of Attorney (see page II-3).

        25(a)    -    Statement of Eligibility of the Corporate Mortgage
                      Trustee on Form T-1.

        25(b)    -    Statement of Eligibility of the Individual Mortgage
                      Trustee on Form T-2.

        25(c)    -    Statement of Eligibility of the Indenture Trustee on
                      Form T-1.


        -----------------------------
        *  Incorporated herein by reference as indicated.


    


        ITEM 17.  UNDERTAKINGS.

        The undersigned registrant hereby undertakes:

        (1)   To file, during any period in which offers or sales are being
        made, a post-effective amendment to this registration statement:

               (i)  To include any prospectus required by Section 10(a)(3) of
              the Securities Act of 1933;

              (ii)  To reflect in the prospectus any facts or events arising
              after the effective date of the registration statement (or the
              most recent post-effective amendment thereof) which, indivi-
              dually or in the aggregate, represent a fundamental change in
              the information set forth in the registration statement;

             (iii)  To include any material information with respect to the
              plan of distribution not previously disclosed in the
              registration statement or any material change to such
              information in the registration statement;

        provided, however, that the undertakings set forth in paragraphs (i)
        and (ii) above do not apply if the registration statement is on Form
        S-3 and the information required to be included in a post-effective
        amendment by those paragraphs is contained in periodic reports filed
        by the registrant pursuant to section 13 or section 15(d) of the
        Securities Exchange Act of 1934 that are incorporated by reference in
        this registration statement.

        (2)   That, for the purpose of determining liability under the
        Securities Act of 1933, each such post-effective amendment that
        contains a form of prospectus shall be deemed to be a new registration
        statement relating to the securities offered therein, and the offering
        of such securities at that time shall be deemed to be the initial bona
        fide offering thereof.

        (3)   To remove from registration by means of a post-effective
        amendment any of the securities being registered which remain unsold
        at the termination of the offering.

        The undersigned registrant hereby undertakes, that for purposes of
        determining any liability under the Securities Act of 1933, each
        filing of the registrant's annual report pursuant to section 13(a) or
        15(d) of the Securities Exchange Act of 1934 that is incorporated by
        reference in the registration statement shall be deemed to be a new
        registration statement relating to the securities offered therein and
        the offering of such securities at that time shall be deemed to be the
        initial bona fide offering thereof.

        Insofar as indemnification for liabilities arising under the
        Securities Act of 1933 may be permitted to directors, officers and
        controlling persons of the registrant pursuant to the provisions
        described under Item 15 of this registration statement, or otherwise,
        the registrant has been advised that in the opinion of the Securities
        and Exchange Commission such indemnification is against public policy
        as expressed in the Securities Act of 1933 and is, therefore,
        unenforceable.  In the event that a claim for indemnification against
        such liabilities (other than the payment by the registrant of expenses
        incurred or paid by a director, officer or controlling person of the
        registrant in the successful defense of any action, suit or
        proceeding) is asserted by such director, officer or controlling
        person in connection with the securities being registered, the
        registrant will, unless in the opinion of its counsel the matter has
        been settled by controlling precedent, submit to a court of appro-
        priate jurisdiction the question whether such indemnification by it is
        against public policy as expressed in the Securities Act of 1933 and
        will be governed by the final adjudication of such issue.


                                  POWER OF ATTORNEY

        Each director and/or officer of the registrant whose signature appears
        hereinafter hereby appoints Richard G. Reiten, Bruce R. DeBolt and
        John T. Hood, the Agents for Service named in this registration
        statement, and each of them severally, as his attorney-in-fact to sign
        in his name and behalf, in any and all capacities stated below, and to
        file with the Securities and Exchange Commission, any and all
        amendments, including post-effective amendments, to this registration
        statement, and the registrant hereby also appoints each such Agent for
        Service as its attorney-in-fact with like authority to sign and file
        any such amendments in its name and behalf.


    

                                      SIGNATURES

           Pursuant to the requirements of the Securities Act of 1933, the
        registrant certifies that it has reasonable grounds to believe that it
        meets all of the requirements for filing on Form S-3 and has duly
        caused this registration statement to be signed on its behalf by the
        undersigned, thereunto duly authorized, in the City of Portland, and
        State of Oregon on the 31st day of October, 1996.

                                NORTHWEST NATURAL GAS COMPANY


                                By /s/ Richard G. Reiten
                                   ----------------------------
                                   Richard G. Reiten,
                                   President and Chief Operating Officer, and
                                   Director


        Pursuant to the requirements of the Securities Act of 1933, this
        registration statement has been signed below by the following persons
        in the capacities and on the date indicated.


           Signature                  Title                   Date
           ---------                  ------                  ------

        /s/ Robert L. Ridgley         Principal Executive 
        -------------------------     Officer and Director    October 31, 1996
           Robert L. Ridgley,
           Chief Executive Officer


        /s/ Richard G. Reiten         Director                October 31, 1996
        ------------------------
           Richard G. Reiten,
           President and Chief
           Operating Officer


        /s/ Bruce R. DeBolt           Principal Financial 
        -------------------------     Officer                 October 31, 1996
           Bruce R. DeBolt,
           Senior Vice President,
           Finance, and Chief
           Financial Officer


        /s/  D. James Wilson          Principal Accounting 
        -------------------------     Officer                 October 31, 1996
           D. James Wilson,
           Treasurer and Controller


        /s/ Mary Arnstad
        ------------------------      Director       )
           Mary Arnstad                              )
                                                     )
        /s/ Thomas E. Dewey, Jr                      )
        -------------------------    Director        )
           Thomas E. Dewey, Jr.                      )
                                                     )       October 31, 1996
        /s/ Tod R. Hamachek                          )
        ----------------------        Director       )
           Tod R. Hamachek                           )
                                                     )
        /s/ Richard B. Keller                        )
        ----------------------       Director        )
           Richard B. Keller                         )
                                                     )
        /s/ Wayne D. Kuni                            )
        ----------------------        Director       )
           Wayne D. Kuni                             )
                                                     )
        /s/ Randall C. Pape                          )
        ----------------------        Director       )
           Randall C. Pape                           )
                                                     )
        /s/ Dwight A. Sangrey                        )
        ----------------------        Director       )
           Dwight A. Sangrey                         )
                                                     )
        /s/ Melody C. Teppola                        )
        ----------------------        Director       )
           Melody C. Teppola                         )
                                                     )
        /s/ Russell F. Tromley                       )
        ----------------------        Director       )
           Russell F. Tromley                        )
                                                     )
        /s/ Benjamin R. Whiteley                     )
        ----------------------        Director       )
           Benjamin R. Whiteley                      )

    

                                  INDEX TO EXHIBITS
        Exhibit
        -------

        1        Form of Distribution Agreement

        4(a)*    Copy of Mortgage and Deed of Trust, dated as of July
                 1, 1946, to Bankers Trust Company and R.G. Page (to
                 whom Stanley Burg is now successor), Trustees (filed
                 as Exhibit 7(j) in File No. 2-6494), together with
                 Indentures supplemental thereto (Nos. 1 through 14,
                 dated, respectively, as of June 1, 1949, March 1,
                 1954, April 1, 1956, February 1, 1959, July 1, 1961,
                 January 1, 1964, March 1, 1966, December 1, 1969,
                 April 1, 1971, January 1, 1975, December 1, 1975,
                 July 1, 1981, June 1, 1985, and November 1, 1985
                 (filed as Exhibit 4(d) in File No. 33-1929); No. 15,
                 dated as of July 1, 1986 (filed as Exhibit (4)(c) in
                 File No. 33-24168); Nos. 16, 17 and 18, dated,
                 respectively, as of November 1, 1988, October 1,
                 1989 and July 1, 1990 (filed as Exhibit (4)(c) in
                 File No. 33-40482); No. 19, dated as of June 1, 1991
                 (filed as Exhibit 4(c) in File No. 33-64014; and No.
                 20, dated as of June 1, 1993 (filed as Exhibit 4(c)
                 in File No. 33-53795).

        4(b)*    Copy of Indenture, dated as of June 1, 1991, to
                 Bankers Trust Company, Trustee, relating to the
                 Unsecured Notes (filed as Exhibit 4(e) in File No.
                 33-64014).

        4(c)*    Form of Officers' Certificate establishing series of
                 Unsecured Notes and Form of Instructions for both
                 Secured and Unsecured Notes (filed as Exhibit 4(f)
                 in File No. 33-64014).

        5(a)     Opinion of Bruce B. Samson, Esquire

        5(b)     Opinion of Messrs. Reid & Priest LLP

        12*      Computation of Ratio of Earnings to Fixed Charges
                 (filed as Exhibit 12 to Form 10-Q for the quarter
                 ended June 30, 1996).

        15       Letter of Deloitte & Touche LLP dated October 31,
                 1996 regarding unaudited interim financial
                 information.

        23       Consent of Deloitte & Touche LLP.  (The consents of
                 Bruce B. Samson, Esquire, and of Reid & Priest LLP
                 are included in their opinions filed, respectively,
                 as Exhibits 5(a) and 5(b)).

        24       Power of Attorney (see page II-3).

        25(a)    Statement of Eligibility of the Corporate Mortgage
                 Trustee Form T-1.

        25(b)    Statement of Eligibility of the Individual Mortgage
                 Trustee on Form T-2.

        25(c)    Statement of Eligibility of the Indenture Trustee on
                 Form T-1.


        -----------------------------------
        *  Previously Filed