AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON 
                                    MARCH 19, 1998
                                                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
          incorporation or organization)              Identification No.)

                     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 Executive 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,                  New York, New York  10019
          220 N.W. Second Avenue                       212-603-2000
          Portland, Oregon  97209
               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
           ===============================================================

             Title of               Proposed
               each                  maximum    Proposed
             class of               offering     maximum
            securities    Amount      price     aggregate     Amount of
              to be        to be       per      offering     registration
            registered  registered   share*      price*          fee
           ---------------------------------------------------------------
           Common
           Stock, 
           $3 1/6 Par   2,500,000
           Value        shares       $27.16    $67,900,000    $20,030.50
           ---------------------------------------------------------------
           Common
           Share
           Purchase     2,500,000
           Rights       rights **       --         --             --
          =================================================================
          *Calculated, pursuant to Rule 457(c) solely for the purpose of
          determining the registration fee, based on the average of the
          high and low prices of the Common Stock on March 17, 1998 on the
          Nasdaq National Market.

          **Since no separate consideration is paid for the Common Share
          Purchase Rights (Rights), the registration fee for such
          securities is included in the fee for the Common Stock.  The
          value attributable to the Rights,if any, is reflected in the
          market price of the Common Stock.

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

               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 Commission,
          acting pursuant to said Section 8(a), may determine.

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


     

          Information contained herein is subject to completion or
          amendment.  A registration statement relating to these securities
          has been filed with the Securities and Exchange Commission. 
          These securities may not be sold nor may offers to buy be
          accepted prior to the time the registration statement becomes
          effective.  This prospectus shall not constitute an offer to sell
          or the solicitation of an offer to buy nor shall there be any
          sale of these securities in any jurisdiction in which such offer,
          solicitation or sale would be unlawful prior to registration or
          qualification under the securities laws of any such jurisdiction. 

                     SUBJECT TO COMPLETION, DATED MARCH 19, 1998

          PROSPECTUS
          ----------


                            NORTHWEST NATURAL GAS COMPANY


                                     COMMON STOCK


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


             Northwest Natural Gas Company (the "Company") intends from
          time to time to issue and sell an aggregate not to exceed
          2,500,000 authorized but unissued shares of its common stock, par
          value $3 1/6 per share (the "Common Stock"), and the common share
          purchase rights appurtenant thereto (the "Rights" and, together
          with the 2,500,000 shares of Common Stock, the "Shares"), on
          terms to be determined at the times of sale.  For each issue of
          the Shares for which this Prospectus will be delivered, there
          will be an accompanying Prospectus Supplement that will set forth
          the terms of the offering.  The Common Stock is traded in the
          over-the-counter market.  Its price and volume data are reported
          on the Nasdaq Stock Market National Market System using the
          symbol "NWNG".


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


            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.  ANY
                            REPRESENTATION TO THE CONTRARY
                                IS A CRIMINAL OFFENSE.



             The Shares may be sold directly by the Company or through
          agents designated from time to time or through underwriters or
          dealers.  If any agents of the Company or any underwriters are
          involved in the sale of the Shares in respect of which this
          Prospectus will be delivered, the names of such agents or
          underwriters, and the initial price to the public, any applicable
          commissions or discounts and the net proceeds to the Company, or
          the means of determining the same, will be set forth in an
          accompanying Prospectus Supplement.  The Company may indemnify
          agents and underwriters against certain civil liabilities,
          including liabilities under the Securities Act of 1933, as
          amended.  See "Plan of Distribution".



                   The date of this Prospectus is March      , 1998


     

                                AVAILABLE INFORMATION

               The Company is subject to the informational requirements of
          the Securities Exchange Act of 1934, as amended (the "Exchange
          Act"), and, in accordance therewith, files reports and other
          information with the Securities and Exchange Commission (the
          "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, 1997; 

               2. The Company's Current Report on Form 8-K dated February
                  27, 1998; and 

               3. The Company's Registration Statement on Form 8-A 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; provided, however, that the documents enumerated
          above or subsequently filed by the Company pursuant to Section 13
          of the Exchange Act prior to the filing with the Commission of
          the Company's most recent Annual Report on Form 10-K (the "Latest
          Annual Report") shall not be incorporated by reference in this
          Prospectus or be a part hereof from and after the filing of the
          Latest Annual Report.  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 is principally engaged in the distribution of
          natural gas to customers in western Oregon and southwestern
          Washington, including the Portland metropolitan area.  The
          Company and its predecessors have supplied gas service to the


                                       2
     

          public since 1859.  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.  


                        USE OF PROCEEDS AND FINANCING PROGRAM

               The net proceeds to be received by the Company from the sale
          of the Shares 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 and to repay
          short-term debt incurred for such purpose.

               The Company expects its utility construction expenditures in
          1998 to aggregate $90 million, and in the five-year period, 1998-
          2002, to aggregate between $500 million and $550 million.

               The Company estimates that approximately 50% of the funds
          required for utility purposes during the 1998-2002 period will be
          internally generated and that the balance will be funded through
          short-term borrowings which will be refinanced periodically
          through the sale of long-term debt and equity securities,
          including the Shares, in such amounts and at such times as the
          Company's cash requirements and market conditions shall
          determine.


                              DESCRIPTION OF THE SHARES

               The following is a summary of certain rights and privileges
          of the Shares.  This summary description does not purport to be
          complete.  Reference is made to the Restated Articles of
          Incorporation and the Bylaws of the Company and the Rights
          Agreement, filed as exhibits to the Registration Statement, for
          complete statements.  The following statements are qualified in
          their entirety by such references.

               Dividends and Liquidation Rights:  Except as hereinafter
          stated, the Common Stock is entitled to receive such dividends as
          are declared by the Board of Directors and to receive ratably on
          liquidation any assets which remain after payment of liabilities. 
          The Company's Preferred and Preference Stock are entitled in
          preference to the  Common Stock (1) to cumulative dividends at
          the annual rate fixed for each series by the Board of Directors,
          and (2) in voluntary and involuntary liquidation, to the amounts
          fixed for each series by the Board of Directors, plus in each
          case, unpaid accumulated dividends.

               Dividend Limitations:  Should dividends on either the
          Preferred or the Preference Stock be in arrears, no dividends on
          the Common Stock may be paid or declared.  Except with the
          consent of the holders of a majority of the Preferred Stock then
          outstanding, no dividends on the Common Stock or the Preference
          Stock may be paid or declared unless the Preferred Stock purchase
          and sinking fund obligations have been met for that year.  Future
          series of the Preferred or the Preference Stock could contain
          sinking fund, purchase or redemption obligations under which no
          dividends on the Common Stock may be paid or declared while such
          obligations are in default.  Common Stock dividends also may be
          restricted by the provisions of future instruments pursuant to
          which the Company may issue long-term debt.

               Voting Rights:  Except as provided by law or as described
          below, only the Common Stock has voting rights.  Cumulative
          voting is permitted by the Restated Articles of Incorporation to
          holders of Common Stock at elections of directors.  The Preferred
          Stock has the special right to elect the smallest number of
          directors which constitutes at least one-fourth of the total
          number of directors, or two directors, whichever is greater, if
          payments of four quarterly dividends or more on any share or
          shares of Preferred Stock should be in arrears.

               Classification of the Board of Directors:  The Board of
          Directors of the Company may consist of not less than nine nor
          more than 13 persons, as determined by the Board, divided into


                                       3
     

          three classes as nearly equal in number as possible.  The current
          number is 12.  One class is elected for a three-year term at each
          annual meeting of shareholders.  Vacancies, including those
          resulting from an increase in the size of the Board, may be
          filled by a majority vote of the directors then in office.  One
          or more of the directors may be removed, with or without cause,
          by the affirmative vote of the holders of not less than two-
          thirds of the shares entitled to vote thereon; provided, however,
          that if fewer than all of the directors should be candidates for
          removal, no one of them shall be removed if the votes cast
          against such director's removal would be sufficient to elect such
          director if then cumulatively voted at an election of the class
          of directors of which such director shall be a part.  Except for
          those persons nominated by the Board, no person shall be eligible
          for election as a director unless a request from a shareholder
          entitled to vote in the election of directors that such person be
          nominated and such person's consent thereto shall be delivered to
          the Secretary of the Company in advance of the meeting at which
          such election shall be held.  The foregoing provisions may not be
          amended or repealed except by the affirmative vote of the holders
          of not less than two-thirds of the shares entitled to vote at an
          election of directors.  The foregoing provisions will not apply
          to directors, if any, elected by the holders of the Preferred
          Stock.

               Transactions with Related Persons:  The Company shall not
          enter into any business transaction with a related person or in
          which a related person shall have an interest (except
          proportionately as a shareholder of the Company) without first
          obtaining both (1) the affirmative vote of the holders of not
          less than two-thirds of the outstanding shares of the capital
          stock of the Company not held by such related person, and (2) the
          determination of a majority of the continuing directors that the
          cash or fair market value of the property, securities or other
          consideration to be received per share by the holders, other than
          such related person, of the shares of each class or series of the
          capital stock of the Company in such business transaction shall
          not be less than the highest purchase price paid by such related
          person in acquiring any of its holdings of shares of the same
          class or series, unless the continuing directors by a majority
          vote shall either (a) have expressly approved the acquisition of
          the shares of the capital stock of the Company that caused such
          related person to become a related person, or (b) have expressly
          approved such business transaction.  As used in this paragraph: a
          "business transaction" includes a merger, consolidation,
          reorganization or recapitalization, a purchase, sale, lease,
          exchange or mortgage of all or a substantial part (10% or more)
          of the property of the Company or a related person, an issuance,
          sale or exchange of securities and a liquidation, spin-off or
          dissolution; a "related person" includes a person, organization
          or group thereof owning 10% or more of the capital stock of the
          Company; "continuing directors" are those whose nominations for
          directorship shall have been approved by a majority of the
          directors in office on April 9, 1984 or by a majority of the then
          continuing directors.  The foregoing provisions may not be
          amended or repealed except by the affirmative vote of the holders
          of not less than two-thirds of the shares of the capital stock of
          the Company (other than shares held by related persons).

               Preemptive Rights:  The holders of the Common Stock have no
          preemptive rights.

               Other Provisions:  The issued and outstanding shares of the
          Company's Common Stock are, and the Common Stock offered hereby
          will be, fully paid and nonassessable.  

               Transfer Agent and Registrar:  The Company is the transfer
          agent and registrar for the Common Stock.

               Common Share Purchase Rights:  The holders of the Common
          Stock have one Right for each of their shares.  Each Right,
          initially evidenced by and traded with the Common Stock, entitles
          the holder to purchase one-tenth of a share of Common Stock at a
          Purchase Price of $6.67, subject to adjustment.  The Rights will
          be exercisable only if a person or group ("Person") shall acquire
          ownership of 15% or more of the Common Stock (such Person being
          hereinafter referred to as an "Acquiring Person") or shall
          announce a tender offer, the consummation of which would result
          in such Person becoming an Acquiring Person.

               If any Person shall have become an Acquiring Person, each
          Right, other than Rights owned by the Acquiring Person (which
          shall be void), may be exercised by its holder to purchase, at a


                                       4
     

          50% discount, shares of Common Stock having a market value equal
          to 20 times the Purchase Price.  If a Person shall have become an
          Acquiring Person but shall not have acquired ownership of 50% or
          more of the Common Stock, the Board of Directors may provide for
          the exchange of all or a part of the Rights (other than Rights
          which shall be void as described above) for Common Stock at a
          ratio of one share per Right.

               In the event that (i) the Company shall consolidate or merge
          with any other person, (ii) any person shall consolidate or merge
          with the Company and the Company shall be the surviving
          corporation and, in connection therewith, all or part of the
          Common Stock shall be changed into or exchanged for stock or
          other securities of any person (including the Company) or cash or
          any other property, or (iii) the Company shall sell or otherwise
          transfer, assets or earning power aggregating 50% or more of the
          assets or earning power of the Company to any other person, each
          Right, except Rights owned by an Acquiring Person (which shall be
          void), may be exercised by its holder to purchase, at a 50%
          discount, shares of common stock of the other person having a
          market value equal to 20 times the Purchase Price.

               At any time prior to any Person becoming an Acquiring
          Person, the Board of Directors may redeem the Rights at a price
          of $.01 per Right.  The Rights will expire on March 15, 2006
          unless they are exchanged or redeemed (as described above)
          earlier than that date.

               The issuance of Common Stock upon exercise of the Rights
          will be subject to any necessary regulatory approvals.

               The Rights have anti-takeover effects because they will
          cause substantial dilution of the Common Stock if a Person
          attempts to acquire the Company on terms not approved by the
          Board of Directors.


                                 PLAN OF DISTRIBUTION

               The Company may sell the Shares in any of three ways: (i)
          through underwriters or dealers; (ii) directly to a limited
          number of purchasers or to a single purchaser; or (iii) through
          agents.  Each Prospectus Supplement will set forth the terms of
          the offering of the Shares offered thereby, including the name or
          names of any underwriters, the purchase price of such Shares and
          the proceeds to the Company from such sale, any underwriting
          discounts and other items constituting underwriters'
          compensation, any initial public offering price and any discounts
          or concessions allowed or reallowed or paid to dealers.  Any
          initial public offering price and any discounts or concessions
          allowed or reallowed or paid to dealers may be changed from time
          to time.

               If underwriters are used in the sale, the Shares will be
          acquired by the underwriters for their own account and may be
          sold from time to time in one or more transactions, including
          negotiated transactions, at a fixed public offering price or at
          varying prices determined at the time of the sale.  The Shares
          may be offered to the public either through underwriting
          syndicates represented by one or more managing underwriters as
          may be designated by the Company, or directly by one or more of
          such firms.  The underwriter or underwriters with respect to a
          particular underwritten offering of Shares will be named in the
          Prospectus Supplement relating to such offering and, if an
          underwriting syndicate is used, the managing underwriter or
          underwriters will be set forth on the cover page of such
          Prospectus Supplement.  Unless otherwise set forth in a
          Prospectus Supplement, the obligations of the underwriters to
          purchase the Shares offered thereby will be subject to certain
          conditions precedent, and the underwriters will be obligated to
          purchase all such Shares if any are purchased.

               The Shares may be sold directly by the Company or through
          agents designated by the Company from time to time.  Each
          Prospectus Supplement will set forth the name of any agent
          involved in the offer or sale of the Shares in respect of which
          such Prospectus Supplement is delivered as well as any
          commissions payable by the Company to such agent.  Unless


                                       5
     

          otherwise indicated in such Prospectus Supplement, any such agent
          will be acting on a best efforts basis for the period of its
          appointment.

               If so indicated in a Prospectus Supplement, the Company will
          authorize agents, underwriters or dealers to solicit offers by
          certain specified institutions to purchase the Shares offered
          thereby from the Company at the public offering price set forth
          in such Prospectus Supplement pursuant to delayed delivery
          contracts providing for payment and delivery on a specified date
          in the future.  Such contracts will be subject to those
          conditions set forth in such Prospectus Supplement, which will
          set forth the commission payable for solicitation of such
          contracts.

               Agents and underwriters may be entitled under agreements
          entered into with the Company to indemnification by the Company
          against certain civil liabilities, including liabilities under
          the Securities Act of 1933, as amended.


                                       EXPERTS

               The financial statements as of and for the year ended
          December 31, 1997 incorporated in this Prospectus by reference to
          the Annual Report on Form 10-K for the year ended December 31,
          1997 have been so incorporated in reliance on the report of Price
          Waterhouse LLP, independent accountants, given on the authority
          of said firm as experts in accounting and auditing.  

               The financial statements as of and for the years ended
          December 31, 1995 and 1996 incorporated by reference in this
          Prospectus by reference to the Annual Report on Form 10-K for the
          year ended December 31, 1997 have been audited by Deloitte &
          Touche LLP, independent auditors, as stated in their report,
          which is incoprorated 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.  

               The statements made as to matters of law and legal
          conclusions in the documents incorporated in this Prospectus by
          reference and under "Description of Common Stock" herein and, if
          any, in the accompanying Prospectus Supplement have been reviewed
          by Mark S. Dodson, Esquire, Portland, Oregon.  Mr. Dodson is
          General Counsel of the Company.  These statements and conclusions
          are set forth in reliance upon the opinion of Mr. Dodson given
          upon his authority as an expert.  As of March 19, 1998, Mr.
          Dodson owned no shares of the Company's common stock.  Mr. Dodson
          has been granted an option to purchase 5,000 shares at a price of
          $27.875, the market price of the shares on the date such option
          was granted.  


                                       LEGALITY

               The legality of the Shares will be passed upon for the
          Company by Mr. Dodson and by Messrs. Reid & Priest LLP, New York,
          New York, and for the underwriters by Messrs. Simpson Thacher &
          Bartlett, New York, New York.  Messrs. Reid & Priest LLP and
          Messrs. Simpson Thacher & Bartlett may rely on the opinion of Mr.
          Dodson as to legal matters arising under Oregon and Washington
          law.


                                       6
     

                                       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                          $     20,030.50

                Legal fees  . . . . . . . . . . . . . .     70,000.00

                Accounting fees and expenses  . . . .       20,000.00

                Printing and engraving  . . . . . . . .     35,000.00

                Miscellaneous expense   . . . . . . . .     31,469.50
                                                           ----------
                  Total expenses  . . . . . . . . . . .   $176,500.00
                                                           ==========


          ITEM 15. INDEMNIFICATION 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, as described below)
          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, provided 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.


                                      II-1
     

          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 Underwriting Agreement.

                    4(a)*  -   Restated Articles of Incorporation, as filed
                               and effective June 24, 1988, as amended
                               December 8, 1992, December 1, 1993 and
                               May 27, 1994 (filed as Exhibit (3a.) to
                               Form 10-K for 1994).

                    4(b)*  -   Bylaws as amended December 18, 1997 (filed
                               as Exhibit (3b.) to Form 10-K for 1997).  

                    4(c)*  -   Rights Agreement, dated as of February 27,
                               1996, between the Company and Boatmen's
                               Trust Company, ChaseMellon Shareholder
                               Services as successor, which includes as
                               Exhibit A thereto the form of a Right
                               Certificate and as Exhibit B thereto the
                               Summary of Rights to Purchase Common Shares
                               (filed as Exhibit 1 to Form 8-A, dated
                               February 27, 1996).

                    5(a)   -   Opinion of Mark S. Dodson, Esq.

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

                    23(a)  -   Consent of Deloitte & Touche LLP.


                                       II-2
     

                    23(b)  -   Consent of Price Waterhouse LLP.  Consents
                               of Mark S. Dodson, Esq., and Reid & Priest
                               LLP are included in their opinions filed,
                               respectively, as Exhibit 5(a) and
                               Exhibit 5(b).

                    24     -   Power of Attorney (see page II-4).  

          --------------------
          *  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,
             individually 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


                                      II-3
     

          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
          appropriate jurisdiction the question whether such indem-
          nification 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 on the following page 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.




                                      II-4
     


                                      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 19th day of
          March, 1998.

                                  NORTHWEST NATURAL GAS COMPANY

                                  By:   /s/ Richard G. Reiten 
                                       -----------------------
                                       Richard G. Reiten
                                     President and Chief Executive Officer

          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/ Richard G. Reiten     Principal Executive Officer,  March 19, 1998
     -------------------------  and Director
        Richard G. Reiten       
        President and Chief
        Executive Officer

      /s/ Bruce R. DeBolt       Principal Financial           March 19, 1998
     -------------------------  Officer
        Bruce R. DeBolt         
        Senior Vice President,
        Finance, and Chief
        Financial Officer

      /s/ D. James Wilson       Principal Accounting          March 19, 1998
     -------------------------  Officer
        D. James Wilson         
        Treasurer and Controller

      /s/ Mary Arnstad          
     -------------------------
        Mary Arnstad

      /s/ Thomas E. Dewey, Jr.  
     -------------------------
        Thomas E. Dewey, Jr.

      /s/ Tod R. Hamachek       
     -------------------------
        Tod R. Hamachek

      /s/ Richard B. Keller     
     -------------------------
        Richard B. Keller

     /s/ Wayne D. Kuni          
     -------------------------
        Wayne D. Kuni

     /s/ Randall C. Pape        Directors                     March 19, 1998
     -------------------------
        Randall C. Pape

     /s/ Robert L. Ridgley      
     -------------------------
        Robert L. Ridgley

      /s/ Dwight A. Sangrey     
     -------------------------
        Dwight A. Sangrey

      /s/ Melody C. Teppola     
     -------------------------
        Melody C. Teppola

      /s/ Russell F. Tromley    
     -------------------------
        Russell F. Tromley

      /s/ Benjamin R. Whiteley  
     -------------------------
        Benjamin R. Whiteley


                                      II-5
     


                                  INDEX TO EXHIBITS


          Exhibit
          -------

            1         Form of Underwriting Agreement.

            4(a)*     Restated Articles of Incorporation, as filed and
                      effective June 24, 1988, as amended December 8, 1992,
                      December 1, 1993 and May 27, 1994 (filed as Exhibit
                      (3a.) to Form 10-K for 1994).

            4(b)*     Bylaws as amended December 18,1997 (filed as
                      Exhibit (3b.) to Form 10-K for 1997).

            4(c)*     Rights Agreement, dated as of February 27, 1996,
                      between the Company and Boatmen's Trust Company,
                      ChaseMellon Shareholder Services as successor, which
                      includes as Exhibit A thereto the form of a Right
                      Certificate and as Exhibit B thereto the Summary of
                      Rights to Purchase Common Shares (filed as Exhibit 1
                      to Form 8-A, dated February 27, 1996).

            5(a)      Opinion of Mark S. Dodson, Esq.

            5(b)      Opinion of Reid & Priest LLP.

            23(a)     Consent of Deloitte & Touche LLP.

            23(b)     Consent of Price Waterhouse LLP.  Consents of Mark S.
                      Dodson, Esq., and Reid & Priest LLP are included in
                      their opinions filed, respectively, as Exhibit 5(a)
                      and Exhibit 5(b).

            24        Power of Attorney (see page II-4).

          -------------------------
          *     Previously filed