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10-K - FORM 10-K - WESTAMERICA BANCORPORATIONc96871e10vk.htm
EX-21 - EXHIBIT 21 - WESTAMERICA BANCORPORATIONc96871exv21.htm
EX-32.1 - EXHIBIT 32.1 - WESTAMERICA BANCORPORATIONc96871exv32w1.htm
EX-31.2 - EXHIBIT 31.2 - WESTAMERICA BANCORPORATIONc96871exv31w2.htm
EX-32.2 - EXHIBIT 32.2 - WESTAMERICA BANCORPORATIONc96871exv32w2.htm
EX-31.1 - EXHIBIT 31.1 - WESTAMERICA BANCORPORATIONc96871exv31w1.htm
EX-3.(B) - EXHIBIT 3(B) - WESTAMERICA BANCORPORATIONc96871exv3wxby.htm
EXHIBIT 23(a)
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
The Board of Directors
Westamerica Bancorporation:
We consent to the incorporation by reference in the registration statement on Form S-3 (No. 333-157893 ) and on Forms S-8 (No. 333-105537, 333-107329 and 333-119783) of Westamerica Bancorporation and subsidiaries of our reports dated February 26, 2010, with respect to the consolidated balance sheets of Westamerica Bancorporation and subsidiaries as of December 31, 2009 and 2008, and the related consolidated statements of income, changes in shareholders’ equity and comprehensive income, and cash flows for each of the years in the three-year period ended December 31, 2009, and the effectiveness of internal control over financial reporting as of December 31, 2009, which reports appear in the December 31, 2009 annual report on Form 10-K of Westamerica Bancorporation and subsidiaries.
     
/s/ KPMG LLP
 
KPMG LLP
   
 
   
San Francisco, California
   
February 26, 2010