UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549


FORM 10-Q 


Quarterly Report Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

For Quarter Ended September 30, 1997

Commission File Number: 1-9383


WESTAMERICA BANCORPORATION
(Exact Name of Registrant as Specified in its Charter)


CALIFORNIA
(State or other jurisdiction
 of incorporation or organization)

94-2156203
(I.R.S. Employer
 Identification No.)


1108 Fifth Avenue, San Rafael, California 94901
(Address of Principal Executive Offices) (Zip Code)

Registrant's Telephone Number, including Area Code
(415) 257-8000


Indicate by check mark whether the registrant (1) has
filed all reports required to be filed by Section 13 or
15(d) of the Securities Exchange Act of 1934 during the
preceding 12 months (or for such shorter period that
the registrant was required to file such reports), and
(2) has been subject to such filing requirements for
the past 90 days.

Yes [ x ]                      No [    ]


Indicate the number of shares outstanding of each of
the registrant classes of common stock, as of the
latest practicable date:

Title  of  Class 

Common Stock,
No Par Value


Shares outstanding as of November 6, 1997

14,304,970



WESTAMERICA BANCORPORATION
CONSOLIDATED BALANCE SHEETS
(In thousands)


                                                   (Unaudited)
                                            ------------------------
                                                   September 30,      December 31,
                                                  1997       1996  *        1996 *
                                            ----------    ----------    ----------
                                                              
ASSETS
Cash and cash equivalents                     $246,485      $342,867      $355,177
Money market assets                                250           250           250
Investment securities available for sale       974,149       876,701       892,461
Investment securities held to maturity,        234,731       219,744       215,432
    with market values of:
       $237,497 at September 30, 1997
       $220,620 at September 30,1996
       $218,009 at December 31,1996
Loans, net of reserve for loan losses of:    2,205,658     2,251,746     2,236,319
        $50,764 at September 30, 1997
        $49,795 at September 30,1996
        $50,920 at December 31,1996
Other real estate owned                          6,019         8,920         9,912
Premises and equipment, net                     53,336        64,804        63,968
Interest receivable and other assets            96,267        91,727        93,255
                                           -----------   -----------   -----------
   Total assets                             $3,816,895    $3,856,759    $3,866,774
                                           ===========   ===========   ===========



LIABILITIES
Deposits:
  Non-interest bearing                        $803,040      $789,217      $834,964
  Interest bearing:
    Transaction and savings                  1,494,522     1,583,727     1,569,022
    Time                                       807,614       847,149       824,714
                                           -----------   -----------   -----------
    Total deposits                           3,105,176     3,220,093     3,228,700
Short-term borrowed funds                      205,476       172,660       167,447
Liability for interest, taxes and
  other expenses                                49,690        33,366        32,483
Debt financing and notes payable                57,500        63,896        58,865
                                           -----------   -----------   -----------
      Total liabilities                      3,417,842     3,490,015     3,487,495

SHAREHOLDERS' EQUITY
Authorized - 50,000 shares
Common stock issued and outstanding:           196,994       186,007       187,210
         14,367 at September 30, 1997
         14,259 at September 30,1996
         14,296 at December 31,1996
Unrealized gain on securities available
 for sale, net of taxes                         14,609         2,762         6,019
Retained earnings                              187,450       177,975       186,050
                                           -----------   -----------   -----------
      Total shareholders' equity               399,053       366,744       379,279
   Total liabilities and                   -----------   -----------   -----------
        shareholders' equity                $3,816,895    $3,856,759    $3,866,774
                                           ===========   ===========   ===========

* Restated on a historical basis to reflect the April 12, 1997, acquisition of
  ValliCorp Holdings, Inc. on a pooling-of-interests basis.



WESTAMERICA BANCORPORATION
CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share data)


                                            Three months ended   Nine months ended
                                               September 30,        September 30,
                                             ----------------     ----------------
                                                1997    1996*        1997    1996*
                                             -------  -------     -------  -------
                                                                   
INTEREST INCOME
Loans                                        $51,233  $51,239    $151,606 $154,224
Money market assets and funds sold                27    1,009       1,629    3,370
Investment securities:
    Available for sale
         Taxable                              11,791   10,290      34,453   30,553
         Tax-exempt                            2,107    1,940       5,626    5,591
    Held to maturity
         Taxable                               1,553    1,480       3,661    4,960
         Tax-exempt                            1,766    1,685       5,444    5,297
                                             -------  -------    -------- --------
    Total interest income                     68,477   67,643     202,419  203,995

INTEREST EXPENSE
Transaction deposits                           1,670    1,638       4,974    4,761
Savings deposits                               7,172    7,154      21,343   21,138
Time deposits                                 10,552   10,520      31,227   31,710
Funds purchased                                1,771    2,475       5,633    8,075
Debt financing and notes payable               1,005    1,092       3,012    3,066
                                             -------  -------    -------- --------
    Total interest expense                    22,170   22,879      66,189   68,750
                                             -------  -------    -------- --------
NET INTEREST INCOME                           46,307   44,764     136,230  135,245

Provision for loan losses                      1,650    3,152       6,250    9,154
                                             -------  -------    -------- --------
NET INTEREST INCOME AFTER
 PROVISION FOR LOAN LOSSES                    44,657   41,612     129,980  126,091

NON-INTEREST INCOME
Service charges on deposit accounts            4,960    5,335      15,592   15,467
Merchant credit card                             917    1,176       2,946    3,498
Mortgage banking                                 392      537       1,112    1,541
Financial services commissions                   323      229         787      572
Trust fees                                       153      102         383      275
Securities gain                                   --        9         136       56
Other                                          2,031    1,811       7,085    5,264
                                             -------  -------    -------- --------
    Total non-interest income                  8,776    9,199      28,041   26,673

NON-INTEREST EXPENSE
Salaries and related benefits                 12,562   15,072      49,779   45,625
Occupancy                                      3,320    4,484      19,068   12,760
Equipment                                      2,140    2,596       8,864    7,522
Professional fees                                687    1,222       8,709    3,749
Data processing                                1,383    1,482       4,794    4,467
Other real estate owned                           88      149         929      758
Other                                          6,023    7,960      19,805   26,340
                                             -------  -------    -------- --------
    Total non-interest expense                26,203   32,965     111,948  101,221
                                             -------  -------    -------- --------
INCOME BEFORE INCOME TAXES                    27,230   17,846      46,073   51,543
 Provision for income taxes                    9,570    5,943      16,235   17,172
                                             -------  -------    -------- --------
NET INCOME                                   $17,660  $11,903     $29,838  $34,371
                                             =======  =======     =======  =======
Average shares outstanding                    14,390   14,080      14,355   14,248

PER SHARE DATA
Earnings per share                             $1.23    $0.85       $2.08    $2.41
Dividends paid                                  0.26     0.23        0.78     0.69


* Restated on a historical basis to reflect the April 12, 1997, acquisition of
  ValliCorp Holdings, Inc. on a pooling-of-interest basis.



WESTAMERICA BANCORPORATION
 STATEMENTS OF CASH FLOWS 
     (In thousands)


                                                         (Unaudited)
                                                     For the nine months
                                                     ended September 30,
                                                  ------------------------
                                                      1997          1996 *
                                                  --------        --------
                                                               
OPERATING ACTIVITIES
Net income                                         $29,838         $34,371
Adjustments to reconcile net income to net
 cash provided by operating activities:
  Depreciation and amortization                      6,234           7,225
  Loan loss provision                                6,250           9,154
  Amortization of deferred net loan fees              (870)         (1,010)
  Decrease in interest income receivable             1,679           2,632
  Decrease (increase) in other assets                4,036          (9,056)
  Increase (decrease) in income taxes payable        3,247          (1,149)
  Decrease in interest expense payable                (541)            (26)
  Decrease in other liabilities                        (41)         (4,198)
  Gain on sales of investment securities              (136)            (56)
  Gain on sales of branches                           (678)             --
  Net loss on sales/write-down of equipment          7,627             260
  Originations of loans for resale                  (9,123)        (56,031)
  Proceeds from sale of loans
     originated for resale                          16,387          57,910
  Net gain on sale of property
      acquired in satisfaction of debt                (866)           (129)
  Write-down on property
      acquired in satisfaction of debt               1,248             428
                                                  --------        --------
    Net cash provided by
        operating activities                        64,291          40,325

INVESTING ACTIVITIES
Net cash obtained in merger                             --           4,370
Net repayments of loans                             16,684          14,780
Purchases of investment securities
    available for sale                            (337,857)       (246,807)
Purchases of investment securities
    held to maturity                               (65,721)        (10,889)
Purchases of property, plant and equipment          (4,515)        (19,805)
Proceeds from maturity of securities
    available for sale                             248,295         217,289
Proceeds from maturity of securities
    held to maturity                                46,422          97,053
Proceeds from sale of securities
    available for sale                              22,415          35,767
Proceeds from sale of property and equipment         1,696           4,366
Proceeds from property
      acquired in satisfaction of debt               5,112           4,926
                                                  --------        --------
   Net cash (used in) provided by 
       investing activities                        (67,469)        101,050

FINANCING ACTIVITIES
Net decrease in deposits                          (123,524)       (116,634)
Net increase (decrease) in short-term borrowings    38,029         (13,372)
Additions to notes payable                              --          22,500
Repayments of notes payable                         (1,365)             (5)
Exercise of stock options/issuance of shares        13,456           4,196
Retirement of stock                                (23,015)        (26,883)
Dividends paid                                      (9,095)        (11,217)
                                                  --------        --------
   Net cash used in
       financing activities                       (105,514)       (141,415)
                                                  --------        --------
   Net decrease in cash
          and cash equivalents                    (108,692)            (40)
Cash and cash equivalents at
    beginning of year                              355,177         342,907
                                                  --------        --------
CASH AND CASH EQUIVALENTS AT END OF PERIOD        $246,485        $342,867
                                                  ========        ========

Supplemental disclosures:
  Loans transferred to other
     real estate owned                               1,601           7,120
  Unrealized net gain on securities
     available for sale                              8,594           1,607
  Interest paid for the period                      66,523          67,328
  Income tax payments for the period                14,305          19,385


 * Restated on a historical basis to reflect the April 12, 1997, acquisition of
   ValliCorp Holdings, Inc., on a pooling-of-interests basis.



MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Westamerica Bancorporation (the "Company"), parent company of
Westamerica Bank, Bank of Lake County, Community Banker Services
Corporation and Westamerica Commercial Credit Inc., reported third
quarter 1997 net income of $17.7 million or $1.23 per share. On a
year-to-date basis, the Company reported net income of $29.8 million,
or $2.08 per share. In addition to historical information, this
discussion includes certain forward-looking statements regarding
events and trends which may affect the Company's future results.
Such statements are subject to risks and uncertainties that could
cause the Company's actual results to differ materially. Such
factors include, but are not limited to, those described in this
discussion and analysis. This report, which includes consolidated
financial statements prepared in conformity with generally accepted
accounting principles, should be read in conjunction with
Westamerica Bancorporation's annual report on Form 10-K for the
year ended December 31, 1996.


Acquisition

On April 12, 1997, the Company completed the acquisition
with ValliCorp Holdings, Inc. ("ValliCorp"), parent company of
ValliWide Bank, on a pooling-of-interests basis (the "Merger") and,
accordingly, the Company's historical consolidated results have
been restated. Under the terms of the Agreement and Plan of
Reorganization among ValliCorp, ValliWide Bank and the Company,
each share of ValliCorp Common Stock was exchanged for .3479 shares
of the Company's Common Stock. No gain or loss for tax purposes was
recognized by ValliCorp shareholders, except with respect to cash
received in lieu of fractional shares. Based on the closing price
of the Company's Common Stock on April 11, 1997, the acquisition
was valued at approximately $290 million or $20.11 per share. On
June 20, 1997, ValliWide Bank, ValliCorp's only bank subsidiary,
merged with and into Westamerica Bank.

The following summarizes the separate results of the combined
entities for the periods shown prior to the combination:

(In thousands, except per share data)


                                                                           Restated
                                          Westamerica                      Combined
                                          Bancorporation     ValliCorp     Results *
                                          ---------------    ---------    ----------
                                                                          
Three months ended 9/30/96
  Net interest income                            $28,069       $16,711       $44,764
  Net income                                       9,467         2,449        11,903
  Earnings per share                                1.00          0.18          0.85

Nine months ended 9/30/96
  Net interest income                            $84,214       $51,060      $135,245
  Net income                                      27,966         6,434        34,371
  Earnings per share                                2.89          0.48          2.41

At September 30, 1996
  Total assets                                $2,529,167    $1,329,555    $3,856,759
  Total shareholders' equity                     229,200       139,376       366,744

 * On September 30, 1996, the Company owned 115,500 shares of ValliCorp
   Common Stock. Amounts indicated have been adjusted to eliminate
   these shares as a result of the Merger.



Components of Net Income

Following is a summary of the components of net income for
the periods indicated:
[/TABLE]



                                        For the three                For the nine
                                        months ended                 months ended
                                        September 30,                September 30,
                                   ----------------------       ---------------------
(In millions)                        1997           1996          1997          1996
                                   ------         -------       ------        -------
                                                                   
Net interest income*                $48.8          $46.7        $143.2        $140.9
Provision for loan losses            (1.7)          (3.2)         (6.3)         (9.2)
Non-interest income                   8.8            9.2          28.0          26.7
Non-interest expense                (26.2)         (33.0)       (111.9)       (101.2)
Provision for income taxes*         (12.0)          (7.8)        (23.2)        (22.8)
                                   ------         ------        ------        ------
Net income                          $17.7          $11.9         $29.8         $34.4
                                    =====          =====         =====         =====

Average total assets             $3,733.7       $3,754.7      $3,746.9      $3,758.4
Net income (annualized) as
a percentage of average
total assets                         1.88%          1.26%         1.06%         1.22%
- ---------------

* Fully taxable equivalent basis (FTE)



During the third quarter of 1997, the Company's net income was
$17.7 million, $5.8 million higher than the same period in 1996.
Higher net interest income, resulting mainly from higher earning
asset yields, a lower loan loss provision and reduced expenses due
to consolidation of operations after the Merger, were partially
offset by lower service fees and other non-interest income.

Comparing the first nine months of 1997 to the prior year, net
income decreased $4.6 million. During the second quarter of 1997,
the Company incurred approximately $18.8 million in one-time costs
associated with the Merger, partially offset by staff reductions
and other cost controls, as operations were consolidated and
efficiencies were achieved during the third quarter. In addition,
the Company benefited from higher net interest income, a lower loan
loss provision and higher non-interest income.


Analysis of Net Interest Income and Margin

Net interest income, the Company's principal source of
revenues, was higher in the third quarter of 1997 compared to
the third quarter of 1996 by $2.1 million, principally due to
the favorable effects of higher average earning-asset
balances and increased related yields, combined with
increased balances of low-cost deposits and a lower volume of
high-cost purchased funds. The Company continually manages
its interest-earning assets and interest-bearing liabilities
and adapts rapidly to changes in market rates.

For the nine months ended September 30, 1997, net interest
income (FTE) increased $2.3 million. An increased level of
low-cost deposits and an accompanying reduction in
higher-costing purchased funds balances were the main reasons
for the increase.

These changes are shown in the components of net interest
income and in the analysis of net interest margin summarized
as follows for the periods indicated:



Net Interest Income


                                        For the three                For the nine
                                        months ended                 months ended
                                        September 30,                September 30,
(In millions)                      ----------------------       ---------------------
                                     1997           1996          1997          1996
                                   ------         -------       ------        -------
                                                                    
Interest income                     $68.5          $67.6        $202.4        $204.0
Interest expense                    (22.2)         (22.9)        (66.2)        (68.8)
FTE adjustment                        2.5            2.0           7.0           5.7
                                  -------        -------       -------       -------
  Net interest income (FTE)         $48.8          $46.7        $143.2        $140.9
                                   ======         ======        ======        ======
Average earning assets           $3,402.1       $3,399.2      $3,409.0      $3,410.6
Net interest margin (FTE)            5.69%          5.47%         5.62%         5.52%


Third quarter loan fees, excluding deferrals of $1.0 million,
included in interest income on loans, were $500,000 higher
than in the same period of 1996. On a year-to-date basis,
loan fees excluding deferrals were $1.2 million higher than the
comparable period in 1996. In both cases, the increases were
due to the increased level of loan originations.



Net Interest Margin (FTE)


                                        For the three                For the nine
                                        months ended                 months ended
                                        September 30,                September 30,
                                   ----------------------       ---------------------
                                     1997           1996          1997          1996
                                   ------         -------       ------        -------
                                                                   
Yield on earning assets              8.27%          8.15%         8.21%         8.21%
Cost of interest-bearing
   liabilities                       3.47%          3.46%         3.44%         3.47%
                                  -------        -------       -------       -------
  Net interest spread                4.80%          4.69%         4.77%         4.74%

Impact of non-interest 
    bearing demand                   0.89%          0.78%         0.85%         0.78%
                                  -------        -------       -------       -------
    Net interest margin              5.69%          5.47%         5.62%         5.52%
                                   ======         ======        ======        ======

The net interest margin during the third quarter of 1997 was 22
basis points higher than the same period in 1996. The average yield
on earning assets during the current quarter was 12 basis points
higher than the same period in 1996 as the Company benefited from a
32 basis point increase in investment securities yields. This was
the combined result of increased balances of tax-free securities, a
reduction in lower-yielding short-term funds sold and the
restatement of the fully taxable equivalent adjustment on a
consolidated basis after the Merger, not previously accounted for
by ValliCorp. Even though the rate paid on interest-bearing
liabilities increased one basis point from the third quarter of
1996, its effect was offset by the favorable impact to the net
interest margin of the higher volume of non-interest bearing demand
deposits.

For the first nine months of 1997, the net interest margin was 10
basis points higher than the first nine months of 1996. A three
basis point decrease in the rate paid on interest-bearing
liabilities, combined with the favorable impact of an increase in
non-interest bearing demand balances, were the main reasons for
this increase.




Summary of Average Balances, Yields/Rates and Interest Differential

The following tables present, for the periods indicated,
information regarding the Company's consolidated average assets,
liabilities and shareholders' equity, the amounts of interest
income from average earning assets and the resulting yields, and
the amount of interest expense paid on interest-bearing
liabilities. The information included has been restated on a
historical basis and presents the combined financial condition of
the Company and ValliCorp as if the Merger had been in effect for
all periods presented. Average loan balances include non-performing
loans. Interest income includes proceeds from loans on non-accrual
status only to the extent cash payments have been received and
applied as interest income. Yields on securities and certain loans
have been adjusted upward to reflect the effect of income thereon
exempt from federal income taxation at the current statutory tax
rate.



Distribution of assets, liabilities and shareholders' equity:


                                               For the three months ended
                                                   September 30, 1997
- ---------------------------------------------------------------------------
(Dollars in thousands)
                                                        Interest    Rates
                                               Average   income/  earned/
                                                balance  expense     paid
- ---------------------------------------------------------------------------
                                                           
Assets
Money market assets and funds sold               $2,250      $27     4.76 %
Investment securities:
  Taxable                                       865,482   13,344     6.12
  Tax-exempt                                    284,726    5,646     7.87
Loans:
  Commercial                                  1,436,306   34,018     9.40
  Real estate construction                       78,705    2,255    11.37
  Real estate residential                       329,765    6,174     7.43
  Consumer                                      404,853    9,469     9.28
- ----------------------------------------------------------------
Earning assets                                3,402,087   70,933     8.27

Other assets                                    331,606
- -------------------------------------------------------
    Total assets                             $3,733,693
=======================================================

Liabilities and shareholders' equity
Deposits:
  Non-interest bearing demand                  $785,603      $--       -- %
  Savings and interest-bearing 
    transaction                               1,523,057    8,842     2.30
  Time less than $100,000                       475,865    6,156     5.13
  Time $100,000 or more                         327,853    4,396     5.32
- ----------------------------------------------------------------
    Total interest-bearing deposits           2,326,775   19,394     3.31
Funds purchased                                 151,995    1,771     4.62
Debt financing and notes payable                 57,500    1,005     6.93
- ----------------------------------------------------------------
  Total interest-bearing liabilities          2,536,270   22,170     3.47
Other liabilities                                33,198
Shareholders' equity                            378,622
- -------------------------------------------------------
  Total liabilities and shareholders' equity $3,733,693
=======================================================
Net interest spread (1)                                              4.80 %
Net interest income and interest margin (2)              $48,763     5.69 %
===========================================================================

(1) Net interest spread represents the average yield earned on
interest-earning assets less the average rate paid on
interest-bearing liabilities.
(2) Net interest margin is computed by dividing net interest income
(annualized) by total average earning assets.



Distribution of assets, liabilities and shareholders' equity:


                                               For the three months ended
                                                   September 30, 1996
- ---------------------------------------------------------------------------
(Dollars in thousands)
                                                        Interest    Rates
                                               Average   income/  earned/
                                                balance  expense     paid
- ---------------------------------------------------------------------------
                                                               
Assets
Money market assets and funds sold              $73,068   $1,009     5.49 %
Investment securities:
  Taxable                                       814,044   11,770     5.75
  Tax-exempt                                    260,581    5,135     7.84
Loans:
  Commercial                                  1,364,462   31,681     9.24
  Real estate construction                      113,756    2,992    10.46
  Real estate residential                       313,893    6,364     8.07
  Consumer                                      459,429   10,677     9.25
- ----------------------------------------------------------------
Earning assets                                3,399,233   69,628     8.15

Other assets                                    355,501
- -------------------------------------------------------
    Total assets                             $3,754,734
=======================================================
Liabilities and shareholders' equity
Deposits:
  Non-interest bearing demand                  $752,093      $--       -- %
  Savings and interest-bearing 
    transaction                               1,541,845    8,792     2.27
  Time less than $100,000                       509,261    6,346     4.96
  Time $100,000 or more                         318,223    4,174     5.22
- ----------------------------------------------------------------
    Total interest-bearing deposits           2,369,329   19,312     3.24
Funds purchased                                 194,800    2,475     5.05
Debt financing and notes payable                 63,541    1,092     6.84
- ----------------------------------------------------------------
  Total interest-bearing liabilities          2,627,670   22,879     3.46
Other liabilities                                27,734
Shareholders' equity                            347,237
- -------------------------------------------------------
  Total liabilities and shareholders' equity $3,754,734
=======================================================
Net interest spread (1)                                              4.69 %
Net interest income and interest margin (2)              $46,749     5.47 %
===========================================================================


(1) Net interest spread represents the average yield earned on
interest-earning assets less the average rate paid on
interest-bearing liabilities.
(2) Net interest margin is computed by dividing net interest income
(annualized) by total average earning assets.





Distribution of assets, liabilities and shareholders' equity:


                                              For the nine months ended
                                                  September 30, 1997
- ---------------------------------------------------------------------------
(Dollars in thousands)
                                                        Interest    Rates
                                               Average   income/  earned/
                                                balance  expense     paid
- ---------------------------------------------------------------------------
                                                          
Assets
Money market assets and funds sold              $39,957   $1,629     5.45 %
Investment securities:
  Taxable                                       866,073   38,114     5.88
  Tax-exempt                                    252,817   16,020     8.47
Loans:
  Commercial                                  1,387,306   96,324     9.28
  Real estate construction                       90,322    7,340    10.87
  Real estate residential                       348,232   20,488     7.87
  Consumer                                      424,268   29,464     9.28
- ----------------------------------------------------------------
Earning assets                                3,408,975  209,379     8.21

Other assets                                    337,961
- -------------------------------------------------------
    Total assets                             $3,746,936
=======================================================

Liabilities and shareholders' equity
Deposits:
  Non-interest bearing demand                  $768,036      $--       -- %
  Savings and interest-bearing 
    transaction                               1,548,960   26,317     2.27
  Time less than $100,000                       484,512   18,432     5.09
  Time $100,000 or more                         324,032   12,795     5.28
- ----------------------------------------------------------------
    Total interest-bearing deposits           2,357,504   57,544     3.26
Funds purchased                                 156,392    5,633     4.82
Debt financing and notes payable                 58,034    3,012     6.94
- ----------------------------------------------------------------
  Total interest-bearing liabilities          2,571,930   66,189     3.44
Other liabilities                                30,023
Shareholders' equity                            376,947
- -------------------------------------------------------
  Total liabilities and shareholders' equity $3,746,936
=======================================================
Net interest spread (1)                                              4.77 %
Net interest income and interest margin (2)             $143,190     5.62 %
===========================================================================


(1) Net interest spread represents the average yield earned on
interest-earning assets less the average rate paid on
interest-bearing liabilities.
(2) Net interest margin is computed by dividing net interest income
(annualized) by total average earning assets.



Distribution of assets, liabilities and shareholders' equity:


                                              For the nine months ended
                                                  September 30, 1996
- ---------------------------------------------------------------------------
(Dollars in thousands)
                                                        Interest    Rates
                                               Average   income/  earned/
                                                balance  expense     paid
- ---------------------------------------------------------------------------
                                                           
Assets
Money market assets and funds sold              $81,268   $3,370     5.54 %
Investment securities:
  Taxable                                       831,939   35,513     5.70
  Tax-exempt                                    260,615   15,279     7.83
Loans:
  Commercial                                  1,333,828   94,115     9.43
  Real estate construction                      122,772    9,633    10.48
  Real estate residential                       310,607   19,199     8.26
  Consumer                                      469,524   32,554     9.26
- ----------------------------------------------------------------
Earning assets                                3,410,553  209,663     8.21

Other assets                                    347,833
- -------------------------------------------------------
    Total assets                             $3,758,386
=======================================================
Liabilities and shareholders' equity
Deposits:
  Non-interest bearing demand                  $734,995      $--       -- %
  Savings and interest-bearing 
    transaction                               1,550,667   25,899     2.23
  Time less than $100,000                       521,704   19,626     5.03
  Time $100,000 or more                         305,310   12,084     5.29
- ----------------------------------------------------------------
    Total interest-bearing deposits           2,377,681   57,609     3.24
Funds purchased                                 210,289    8,075     5.13
Debt financing and notes payable                 59,308    3,066     6.91
- ----------------------------------------------------------------
  Total interest-bearing liabilities          2,647,278   68,750     3.47
Other liabilities                                26,251
Shareholders' equity                            349,862
- -------------------------------------------------------
  Total liabilities and shareholders' equity $3,758,386
=======================================================
Net interest spread (1)                                              4.74 %
Net interest income and interest margin (2)             $140,913     5.52 %
===========================================================================


(1) Net interest spread represents the average yield earned on
interest-earning assets less the average rate paid on
interest-bearing liabilities.
(2) Net interest margin is computed by dividing net interest income
(annualized) by total average earning assets.



Rate and volume variances.

The following tables set forth a summary of the changes in interest
income and interest expense from changes in average asset and
liability balances (volume) and changes in average interest rates
for the periods indicated. Changes not solely attributable to
volume or rates have been allocated in proportion to the respective
volume and rate components.



- --------------------------------------------------------------------------
(In thousands)                                     Three months ended
                                                   September 30, 1997
                                               compared with three months
                                                ended September 30, 1996
                                               ---------------------------
                                                 Volume     Rate    Total
- --------------------------------------------------------------------------

Increase (decrease) in 
     interest and fee income:
                                                            
  Money market assets and funds sold              ($878)   ($104)   ($982)
  Investment securities:
    Taxable                                         786      788    1,574
    Tax-exempt                                      492       19      511
  Loans:
    Commercial                                    1,760      577    2,337
    Real estate construction                     (1,024)     287     (737)
    Real estate residential                         337     (527)    (190)
    Consumer                                     (1,246)      38   (1,208)
- --------------------------------------------------------------------------
      Total loans                                  (173)     375      202
- --------------------------------------------------------------------------
Total increase in interest and fee income           227    1,078    1,305
- --------------------------------------------------------------------------
Increase (decrease) in interest expense:
  Deposits:
    Savings/interest-bearing                       (198)     248       50
    Time less than $ 100,000                       (412)     222     (190)
    Time $ 100,000 or more                          135       87      222
- --------------------------------------------------------------------------
     Total (decrease) increase
         in interest-bearing deposits              (475)     557       82
  Funds purchased                                  (507)    (197)    (704)
  Debt financing and notes payable                 (102)      15      (87)
- --------------------------------------------------------------------------
    Total(decrease) increase in 
            interest expense                     (1,084)     375     (709)
- --------------------------------------------------------------------------
   Increase in net 
        interest income (1)                      $1,311     $703   $2,014
==========================================================================

(1) Amounts calculated on a fully taxable equivalent basis
    using the current statutory federal tax rate.



Rate and volume variances.


- --------------------------------------------------------------------------
(In thousands)                                     Nine months ended
                                                   September 30, 1997
                                               compared with nine months
                                               ended September 30, 1996
                                               ---------------------------
                                                 Volume     Rate    Total
- --------------------------------------------------------------------------

Increase (decrease) in 
     interest and fee income:
                                                         
  Money market assets and funds sold            ($1,688)    ($53) ($1,741)
  Investment securities:
    Taxable                                       1,463    1,138    2,601
    Tax-exempt                                     (427)   1,168      741
  Loans:
    Commercial                                    3,540   (1,331)   2,209
    Real estate construction                     (2,662)     369   (2,293)
    Real estate residential                       2,114     (825)   1,289
    Consumer                                     (3,174)      84   (3,090)
- --------------------------------------------------------------------------
      Total loans                                  (182)  (1,703)  (1,885)
- --------------------------------------------------------------------------
Total (decrease) increase in interest and
    fee income                                     (834)     550     (284)
- --------------------------------------------------------------------------
Increase (decrease) in interest expense:
  Deposits:
    Savings/interest-bearing                        (27)     445      418
    Time less than $ 100,000                     (1,440)     246   (1,194)
    Time $ 100,000 or more                          728      (17)     711
- --------------------------------------------------------------------------
     Total (decrease) increase
         in interest-bearing deposits              (739)     674      (65)
  Funds purchased                                (1,971)    (471)  (2,442)
  Debt financing and notes payable                  (70)      16      (54)
- --------------------------------------------------------------------------
     Total (decrease) increase in
        interest expense                         (2,780)     219   (2,561)
- --------------------------------------------------------------------------
   Increase in net interest income               $1,946     $331   $2,277
==========================================================================

(1) Amounts calculated on a fully taxable equivalent basis
    using the current statutory federal tax rate.



Provision for Loan Losses

The level of the provision for loan losses during each of the
periods presented reflects the Company's continued efforts to
improve loan quality by enforcing underwriting and administration
procedures and aggressively pursuing collection efforts with
troubled debtors. After the Merger, and continuing with the above
mentioned strategy, the Company provided $1.7 million for loan
losses for the third quarter of 1997, compared to $3.2 million for
the same period in 1996. On a year-to-date basis, the $6.3 million
provision for loan losses in 1997 was $2.9 million lower than the
first nine months of 1996. The 1997 provision includes $2.5 million
recorded by ValliCorp prior to the Merger, conforming to upgraded
credit standards and workout strategies for loans and properties.

For further information regarding net credit losses and the reserve
for loan losses, see the "Asset Quality" section of this report.


Non-interest Income

The following table summarizes the components of non-interest
income for the periods indicated.


                                       For the three               For the nine
                                       months ended                months ended
(In millions)                          September 30,               September 30,
                                  ---------------------       ---------------------
                                    1997          1996          1997          1996
                                  ------        -------       ------        -------
                                                                   
Deposit account fees               $4.96         $5.34        $15.59        $15.47
Merchant credit card                0.92          1.18          2.95          3.50
Mortgage banking income             0.39          0.54          1.11          1.54
Financial services
  commissions                       0.32          0.23          0.79          0.57
Trust fees                          0.15          0.10          0.38          0.28
Net investment
  securities gain                     --          0.01          0.14          0.06
Other non-interest income           2.04          1.80          7.08          5.25
                                  ------        ------        ------        ------
  Total                            $8.78         $9.20        $28.04        $26.67
                                  ======        ======        ======        ======



The $420,000 decrease in non-interest income during the third
quarter of 1997 compared to the third quarter of 1996, included
$380,000 lower deposit account fees principally due to income
foregone during the first cycle of accounts converted in the merger
of ValliWide Bank with and into Westamerica Bank, $260,000 lower
merchant credit card income and $150,000 lower mortgage banking
mainly due to lower refinancing volume. Partially offsetting these
variances, financial services commissions were $90,000 higher than
the third quarter of 1996 resulting from increased share of fees
earned by the agent managing certain investments of the Company's
customers, and trust fees were $50,000 higher than the comparable
period of prior year. In addition, gains realized on asset sales
were the major contributor to the increase in the other
non-interest income category.

Comparing the first nine months of 1997 to the same period of 1996,
non-interest income increased $1.37 million. The largest
contributor to this variance was a gain on sale of assets at
ValliWide Bank prior to the merger with and into Westamerica Bank
and after the merger of the holding companies, included in the
"Other" non-interest income category variance of $1.83 million. In
addition, financial services commissions were $220,000 higher than
prior year for the same reason stated above and deposit account
fees were $120,000 higher than the comparable period in 1996 as
higher account analysis and other transaction account fees during
the first nine months of 1996 more than offset the income foregone
during the first cycle after the merger of ValliWide Bank's
converted accounts. The favorable variances also include $100,000
higher trust fees and an $80,000 gain on sales of investment
securities. Partially offsetting these favorable variances,
merchant credit card fees and mortgage banking income were $550,000
and $430,000, respectively, lower than the same period in 1996.


Non-interest Expense

The following table summarizes the components of non-interest
expense for the periods indicated.


                                       For the three               For the nine
                                       months ended                months ended
                                       September 30,               September 30,
                                  ---------------------       ---------------------
(In millions)                       1997          1996          1997          1996
                                  ------        -------       ------        -------
                                                                  
Salaries and incentives           $10.87        $13.89        $44.70        $41.56
Other personnel                     1.69          1.18          5.08          4.07
Occupancy                           3.32          4.48         19.07         12.76
Equipment                           2.14          2.60          8.86          7.52
Professional fees                   0.69          1.22          8.71          3.75
Data processing services            1.38          1.48          4.79          4.47
Courier service                     0.81          0.81          2.41          2.18
Stationery and supplies             0.53          0.81          1.91          2.17
Postage                             0.52          0.59          1.79          1.78
Marketing                           0.40          0.78          1.44          2.33
Merchant credit card                0.37          0.65          1.36          1.72
Loan expense                        0.36          0.44          1.29          1.35
Other real estate owned             0.09          0.15          0.93          0.76
Operational losses                  0.26          0.28          0.79          0.69
Other non-interest expense          2.77          3.61          8.82         14.11
                                 -------       -------       -------       -------
Total                             $26.20        $32.97       $111.95       $101.22
                                 =======       =======       =======       =======



In the third quarter of 1997, non-interest expense decreased $6.77
million from the third quarter of 1996 reflecting the effect of
administration and operation consolidations, branch closures and
other Merger-related efficiencies. The decrease affected all
categories of non-interest expense. The largest variance from prior
year is employee related, reflecting the reduction of 426 full-time
equivalent staff. Other expense reductions from prior year include
$1.16 million lower occupancy costs, as facilities closures
including branches and write-offs of assets have reduced related
expenses; $530,000 lower professional fees, mostly due to increased
expenses in 1996 related to mergers and acquisitions; and $460,000
lower equipment costs, principally due to lower expenses resulting
from merger-related asset write-offs. Other variances in
non-interest expense from the third quarter of 1996 resulting
primarily from achieved economies of scale after consolidation of
operations between Westamerica and ValliWide banks include $380,000
lower marketing expenses; $280,000 lower merchant credit card
expenses; and $280,000 and $100,000, respectively, lower stationery
and supplies expenses and data processing services. In addition,
loan expense was $80,000 lower, postage was $70,000 lower and other
real estate owned costs and operational losses were $60,000 and
$20,000, respectively, lower than prior year.

Comparing the first nine months of 1997 with the comparable period
in 1996, non-interest expense increased $10.73 million. Major
increases from the first nine months of 1996 relate to one-time
costs of approximately $18.8 million in connection with the Merger.
These costs are included in salaries and incentives, occupancy,
professional fees, equipment, data processing services and courier
service costs. Other real estate owned increased $170,000,
principally due to write-downs net of sales of properties acquired
in satisfaction of debt and operational losses were $100,000 higher
than the comparable period of 1996. Partially offsetting these
variances, other non-interest expense decreased $5.29 million from
prior year principally due to the inclusion of $5.12 million of
ValliCorp's costs related to merger and integration activities
during 1996. Marketing related costs decreased $890,000 from the
first nine months of 1996, mainly from reduced branch advertising
and public relations costs. Credit card expenses decreased by
$360,000. Stationery and supplies costs decreased by $260,000 as
consolidation of operations required lower purchases and usage of
inventories and loan expenses were $60,000 lower than the
comparable period of 1996 mainly due to decreased activity after
the mergers.


Provision for Income Tax

During the third quarter of 1997, the Company recorded income tax
expense of $9.6 million compared to $5.9 million in the third
quarter of 1996. On a year-to-date basis, income tax expense was
$16.2 million for 1997 compared to $17.2 million in 1996. The
provision recorded for the first nine months of 1997 represents an
effective tax rate of 35.2 percent, compared to 33.3 percent for
the first nine months of 1996. The provision for income taxes for
all periods presented is directly attributable to the respective
level of earnings and the non-tax deductible expenses incurred in
connection with mergers and acquisitions.



Asset Quality

The Company closely monitors the markets in which it conducts its
lending operations. The Company continues its strategy to control
exposure to loans with high credit risk and increase
diversification of earning assets. Asset reviews are performed
using grading standards and criteria similar to those employed by
bank regulatory agencies. Assets receiving lesser grades fall under
the "classified assets" category, which includes all non-performing
assets and potential problem loans, and receive an elevated level
of attention to ensure collection. The following is a summary of
classified assets on the dates indicated:



                                      September 30,     December 31,
(In millions)                     --------------------  -------------
                                    1997          1996          1996
                                  ------        ------        ------
                                                      
Classified loans                   $69.3         $79.4         $62.9
Other classified assets              6.0           8.9           9.9
                                  ------        ------        ------
Total classified assets            $75.3         $88.3         $72.8
                                  ======        ======        ======
Reserve for loan losses as
  a percentage of
  classified loans                    73%           63%           81%



Classified loans at September 30, 1997, decreased $10.1 million or
13 percent to $69.3 million from September 30, 1996, principally
due to sales and pay-offs of loans with real estate collateral and
transfers to the other real estate owned category. The $6.4 million
increase in classified loans from December 31, 1996 was mainly due
to increases in commercial loans and other loans with real estate
collateral.


Non-performing Assets

Non-performing assets include non-accrual loans, loans 90 days past
due as to principal or interest and still accruing and other real
estate owned. Loans are placed on non-accrual status when reaching
90 days or more delinquent, unless the loan is well secured and in
the process of collection. Interest previously accrued on loans
placed on non-accrual status is charged against interest income. In
addition, loans secured by real estate with temporarily impaired
values and commercial loans to borrowers experiencing financial
difficulties are placed on non-accrual status even though the
borrowers continue to repay the loans as scheduled. Such loans are
classified as "performing non-accrual" and are included in total
non-performing assets. Performing non-accrual loans are reinstated
to accrual status when improvements in credit quality eliminate
Management's doubt as to the full collectibility of both interest
and principal and the loan is brought current. When the ability to
fully collect non-accrual loan principal is in doubt, cash payments
received are applied against the principal balance of the loan
until such time as full collection of the remaining recorded
balance is expected. Any subsequent interest received is recorded
as interest income on a cash basis.



The following is a summary of non-performing assets on the dates
indicated:


                                      September 30,     December 31,
(In millions)                    ---------------------  -------------
                                    1997          1996          1996
                                 -------       -------       --------
                                                      
Non-accrual loans:
  Performing                       $4.68         $5.27         $4.29
  Non-performing                   15.64         17.82         12.55
                                 -------       -------       -------
   Total non-accrual loans         20.32         23.09         16.84

Restructured loans                    --          0.26          0.22
Loans 90 days past due and
  still accruing                    0.75          0.65          1.74
                                 -------       -------       -------
 Total non-performing loans        21.07         24.00         18.80
                                 -------       -------       -------

Other real estate owned             6.02          8.92          9.91
                                 -------       -------       -------
Total non-performing assets       $27.09        $32.92        $28.71
                                 =======       =======       =======
Reserve for loan losses as
   a percentage of
   non-performing loans              241%          207%          271%


Non-accrual loans decreased $2.77 million to $20.32 million at
September 30, 1997 from $23.09 at September 30, 1996 and increased
$3.48 million from $16.84 million outstanding at December 31, 1996.
The reduction in balances of non-accrual loans from September, 1996
was principally due to write-offs, pay-offs and pay-downs net of
additions of loans with real estate collateral and commercial
loans. The increase from December 31, 1996 was mainly due to the
addition of two large commercial real estate loans partially offset
by write-offs, pay-offs and pay-downs. The change in the restructured
loan category was due to one loan, maturing in December of 2002,
categorized by ValliWide Bank as "Trouble Debt Restructure" but
eliminated from the non-performing asset list as it has performed
as agreed since its restructuring.

The $2.90 million and $3.89 million decreases in other real estate
owned balances from September 30, 1996 and December 31, 1996,
respectively, were due to additions from non-accrual loans with
real estate collateral net of liquidations, write-downs and sales.

The amount of gross interest income that would have been recorded
for non-accrual loans for the three and nine months ended September
30, 1997, if all such loans had been current in accordance with
their original terms, was $509,000 and $1.2 million, respectively.
The amount of interest income that was recognized on non-accrual
loans from cash payments made during the three and nine months
ended September 30, 1997 totaled $189,000 and $409,000,
respectively, representing annualized yields of 3.34 percent and
3.31 percent, respectively. Cash payments received which were
applied against the book balance of non-accrual loans outstanding
at September 30, 1997, totaled $555,000.


Reserve for Loan Losses

It is the position of the Company that the level of the loan loss
reserve is adequate to provide for losses that can be estimated
based on anticipated specific and general conditions as determined
by Management. These include credit loss experience, the amount of
past due, non-performing and classified loans, recommendations of
regulatory authorities and prevailing economic conditions. The
reserve is allocated to segments of the loan portfolio based in
part on quantitative analyses of historical credit loss experience.
Criticized and classified loan balances are analyzed using both a
linear regression model and standard allocation percentages. The
results of these analyses are applied to current criticized and
classified loan balances to allocate the reserve to the respective
segments of the loan portfolio. In addition, loans with similar
characteristics not usually criticized using regulatory guidelines
due to their small balances and numerous accounts, are analyzed
based on the historical rate of net losses and delinquency trends
grouped by the number of days the payments on these loans are
delinquent. While these factors are judgmental and may not be
reduced to a purely mathematical formula, Management considers the
reserve for loan losses, for the periods presented, to be adequate
as a reserve against inherent losses. Management continues to
evaluate the loan portfolio and assess current economic conditions
that will dictate future required reserve levels.



The following table summarizes the loan loss provision, net credit
losses and loan loss reserve for the periods indicated:


                                       For the three               For the nine
                                       months ended                months ended
                                       September 30,               September 30,
(In millions)                     ---------------------       ---------------------
                                    1997          1996          1997          1996
                                  ------        -------       ------        -------
                                                                   
Balance, beginning
   of period                       $50.7         $46.6         $50.9         $48.5
Loan loss provision                  1.7           3.2           6.3           9.2

Loans charged off                   (2.9)         (2.7)         (9.6)        (12.6)
Recoveries of previously
  charged-off loans                  1.3           1.1           3.2           3.1
                                 -------       -------       -------       -------
  Net credit losses                 (1.6)         (1.6)         (6.4)         (9.5)

Reserve acquired 
    through merger *                  --           1.6            --           1.6
                                 -------       -------       -------       -------
Balance, end of period             $50.8         $49.8         $50.8         $49.8
                                 =======       =======       =======       =======
Reserve for loan losses
  as a percentage of
  loans outstanding                 2.25%         2.16%


* As reported by ValliCorp, after its merger with Auburn Bancorp on
  September 1996, accounted for using the purchase method of
  accounting.



Asset and Liability Management

The fundamental objective of the Company's management of assets and
liabilities is to maximize economic value while maintaining
adequate liquidity and a conservative level of interest rate risk.

The primary analytical tool used by the Company to gauge interest
rate sensitivity is a simulation model used by many major banks and
bank regulators. This model is used to simulate, based on the
current and projected portfolio mix, the effects on net interest
income of changes in market interest rates. Under the Company's
policy and practice, the projected amount of net interest income
over the ensuing twelve months is not allowed to fluctuate more
than 10 percent even under alternate assumed interest rate changes
of plus or minus 200 basis points. The results of the model
indicate that the mix of interest rate sensitive assets and
liabilities at September 30, 1997 would not result in a fluctuation
of net income exceeding 10 percent.

The Securities and Exchange Commission (SEC) has approved rule
amendments to clarify and expand existing disclosure requirements
for derivative financial instruments. The amendments require
enhanced disclosure of accounting policies for derivative financial
instruments in the footnotes to the financial statements. In
addition, the amendments expand existing disclosure requirements to
include quantitative and qualitative information about market risk
inherent in market risk sensitive instruments. The required
quantitative and qualitative information should be disclosed
outside the financial statements and related notes thereto. The
enhanced accounting policy disclosure requirements are effective
for filings that include financial statements for fiscal periods
ending after June 15, 1997. As the Company believes that the
derivative financial instrument disclosures contained within the
notes to the financial statements of its 1996 Form 10-K
substantially conform with the accounting policy requirements of
these rule amendments, no further interim disclosure has been
provided. The rule amendments that require expanded disclosure of
quantitative and qualitative information about market risk are
effective with the 1997 Form 10-K. At September 30, 1997 and 1996,
the Company had no derivative financial instruments outstanding.


Liquidity

The Company's principal source of asset liquidity is marketable
investment securities available for sale. At September 30, 1997,
investment securities available for sale totaled $974.1 million.
This represents an increase of $97.4 million from September 30,
1996.

The Company generates significant liquidity from its operating
activities. The Company's profitability during the first nine
months of 1997 and 1996 was the main contributor to the cash flows
from operations for such periods of $64.3 million and $40.3
million, respectively.

Cash flows are provided by and used in financing activities,
primarily customer deposits, short-term borrowings from banks,
extensions of long-term debt and repurchases of the Company's
Common Stock. During the first nine months of 1997, $105.5 million
was used by financing activities, including a $123.5 million
decrease in deposits, a $23.0 million outflow used for purchasing
the Company's common stock, dividends paid in the amount of $9.1
million and repayments of long-term debt for $1.4 million. These
uses of cash were partially offset by $13.5 million provided by the
issuance of new shares of common stock, principally for stock
option exercises and a $38.0 million increase in short-term
borrowings. This compares to the first nine months of 1996 when
$141.4 million was used in financing activities, as a $116.6
million decrease in deposits combined with other cash flow uses
including retirement of stock and dividends to shareholders of
$26.9 million and $11.2 million, respectively, and a $13.4 million
decrease in short-term borrowed funds were partially offset by the
issuance of $22.5 million of the Company's Senior Notes and a $4.2
million increase in common stock principally from stock option
exercises.

The Company uses cash flows from operating and financing activities
primarily to invest in securities and loans. During the first nine
months of 1997, net repayments of loans were $16.7 million compared
to $14.8 million during the same period in 1996. The Company
continued to grow its investment securities portfolio in 1997,
reflected in the $86.6 million increase, during the first nine
months of 1997, in investment securities net of maturities and
sales, compared to a decrease of $92.4 million during the same
period of 1996. Costs related to the new facility to consolidate
the Company's operations and back office functions to Fairfield,
California, are included in purchases of property plant and
equipment during the first nine months of 1996; costs related to
branch restructurings are included in the purchases of property,
plant and equipment, during the first nine months of 1997 and 1996.

The Company anticipates increasing its cash level from operations
through the end of 1997 due to increased profitability and retained
earnings. For the same period, it is anticipated that the
investment securities portfolio and demand for loans will
moderately increase. The growth in deposit balances is expected to
follow the anticipated growth in loan and investment balances
through the end of 1997.



Capital Resources

The current and projected capital position of the Company and the
impact of capital plans and long-term strategies is reviewed
regularly by Management.

The Company's capital position represents the level of capital
available to support continued operations and expansion. The
Company's primary capital resource is shareholders' equity which
was $399.1 million at September 30, 1997, representing an increase
of $32.3 million or 9 percent from September 30, 1996 and an
increase of $19.8 million, or 5 percent, from December 31, 1996. As
a result of the Company's profitability and the retention of
earnings, the ratio of equity to total assets increased to 10.5
percent at September 30, 1997, from 9.5 percent a year ago and 9.8
percent as of December 31, 1996. The ratio of Tier I capital to
risk-adjusted assets was 12.83 percent at September 30, 1997,
compared to 12.52 percent at September 30, 1996 and 12.96 percent
at December 31, 1996. Total capital to risk-adjusted assets was
14.78 percent at September 30, 1997 compared to 14.51 percent at
June 30, 1996 and 14.95 percent at December 31, 1996.

The following summarizes the ratios of capital to risk-adjusted
assets for the periods indicated:


                                       September 30,    December 31,
                                  --------------------  -------------
                                    1997          1996          1996
                                  ------        ------        -------
                                                      
Tier I Capital                     12.83%        12.52%        12.96%
Total Capital                      14.78%        14.51%        14.95%
Leverage ratio                      9.89%         9.25%         9.27%


The risk-based capital ratios increased at September 30, 1997
compared to September 30, 1996 as the increase in equity,
principally due to the generation and retention of earnings,
out paced the increase in risk-weighted assets. The reduction in
capital ratios from December 31, 1996 is due to a relatively large
increase in risk-weighted assets due in part to increases in loan
balances and other assets. Capital ratios are reviewed on a regular
basis to ensure that capital exceeds the prescribed regulatory
minimums and is adequate to meet the Company's future needs. All
ratios are in excess of the regulatory definition of "well
capitalized".

Since the beginning of 1994 through June 30, 1997, the Board of
Directors of the Company authorized the repurchase of 914,050
shares of common stock from time to time, subject to appropriate
regulatory and other accounting requirements. Pursuant to this
program, 674,050 shares had been purchased through December 31,
1996, 12,500 were purchased during the first quarter of 1997,
168,200 were purchased during the second quarter of 1997 and 59,300
were purchased during the third quarter of 1997. During October,
1997, the Board of Directors further approved the continuing
systematic repurchase of 240,000 additional shares in open-market
transactions from time to time prior to November 1, 1998. Through a
separate program, the Board of Directors also approved, during
October 1997, the purchase from time to time in open-market and
block transactions up to 70,000 shares. These purchases are
conducted in accordance with the limitations and guidelines of rule
10b-18 and are made to lessen the dilutive impact of issuing new
shares to meet stock performance, option plans, acquisitions and
other requirements.



Interim Periods

In February, 1997, the Financial Accounting Standards Board (FASB)
issued Statement of Financial Accounting Standards No. 128, 
"Earnings per Share" ("SFAS 128"). SFAS 128 establishes standards
for computing and presenting earnings per share ("EPS") and applies
to entities with publicly held common stock or potential common
stock. SFAS 128 simplifies the standards for computing earnings per
share previously found in APB Opinion No. 15, "Earnings per Share",
and replaces the presentation of primary EPS with a presentation of
basic EPS. It also requires dual presentation of basic and diluted
EPS on the face of the income statement and requires a
reconciliation of the numerator and denominator of the basic EPS
computation to the numerator and denominator of the diluted EPS
computation. SFAS 128 is effective for financial statements issued
for periods ending after December 15, 1997, including interim
periods; earlier application is not permitted. This statement
requires restatement of all prior-period EPS data presented.

The pro forma EPS amounts computed using this statement for the
three and nine-month periods ended September 30, 1997 and 1996 are
as follows:


                                     For the three months
(Dollars and shares in              ended September 30, 1997
 thousands except per         ---------------------------------------
 share amounts)                                            Per Share
                              Net Income        Shares        Amount
                              ----------        ------     ----------
                                                      
Basic EPS:
 Income available to common
 shareholders                    $17,660        14,390         $1.23
Effect of dilutive securities:
 Stock options outstanding            --           279
                                --------       -------
Diluted EPS:
 Income available to common
 shareholders plus assumed
 conversions                     $17,660        14,669         $1.20
                                ========       =======        ======




                                     For the three months
(Dollars and shares in              ended September 30, 1996
 thousands except per         ---------------------------------------
 share amounts)                                            Per Share
                              Net Income        Shares        Amount
                              ----------        ------     ----------
                                                      
Basic EPS:
 Income available to common
 shareholders                    $11,903        14,080         $0.85
Effect of dilutive securities:
 Stock options outstanding            --           270
                                --------       -------
Diluted EPS:
 Income available to common
 shareholders plus assumed
 conversions                     $11,903        14,350         $0.83
                                ========       =======        ======






                                      For the nine months
(Dollars and shares in              ended September 30, 1997
 thousands except per         ---------------------------------------
 share amounts)                                            Per Share
                              Net Income        Shares        Amount
                              ----------        ------     ----------
                                                      
Basic EPS:
 Income available to common
 shareholders                    $29,838        14,355         $2.08
Effect of dilutive securities:
 Stock options outstanding            --           255
                                --------       -------
Diluted EPS:
 Income available to common
 shareholders plus assumed
 conversions                     $29,838        14,610         $2.04
                                ========       =======        ======




                                      For the nine months
(Dollars and shares in              ended September 30, 1996
 thousands except per         ---------------------------------------
 share amounts)                                            Per Share
                              Net Income        Shares        Amount
                              ----------        ------     ----------
                                                     
Basic EPS:
 Income available to common
 shareholders                    $34,371        14,248         $2.41
Effect of dilutive securities:
 Stock options outstanding            --           269
                                --------       -------
Diluted EPS:
 Income available to common
 shareholders plus assumed
 conversions                     $34,371        14,517         $2.37
                                ========       =======        ======


In June 1997, the FASB issued Financial Accounting Standard No.
130, "Reporting Comprehensive Income" ("SFAS 130"). SFAS 130 is
effective with the year-end 1998 financial statements; however, the
total comprehensive income is required in the financial statements
for interim periods beginning in 1998. In June 1997, the FASB
issued Financial Accounting Standard No. 131, "Disclosure About
Segments of An Enterprise and Related Information" ("SFAS 131").
SFAS 131 is effective with the year-end 1998 financial statements.
Management believes that the adoption of these statements will not
have a material impact on the Company's financial statements.



SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of
1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned hereunto duly authorized.



                                         WESTAMERICA BANCORPORATION
                                         (Registrant)



Date: November 6, 1997                   /s/ DENNIS R. HANSEN
                                         --------------------
                                         Dennis R. Hansen
                                         Senior Vice President
                                         and Controller



PART II - OTHER INFORMATION

         Item 1 - Legal Proceedings

                  Due to the nature of the banking business, the Subsidiary
                  Banks are at times party to various legal actions; all
                  such actions are of a routine nature and arise in the
                  normal course of business of the Subsidiary Banks.

         Item 2 - Changes in Securities

                  None

         Item 3 - Defaults upon Senior Securities

                  None

         Item 4 - Submission of Matters to a Vote of Security Holders

                  None


         Item 5 - Other Information

                  None

         Item 6 - Exhibits and Reports on Form 8-K

                     (a)   Exhibit 11:   Computation of Earnings Per Share on
                                         Common and Common Equivalent Shares
                                         and on Common Shares Assuming Full
                                         Dilution

                     (b)   Exhibit 27 :  Financial Data Schedule


                     (c)   Reports on Form 8-K: None