Exhibit 23(c)

CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the
incorporation of our report dated February 17, 1995, on our
audits of North Bay Bancorp's consolidated financial statements
for the years ended December 31, 1994 and 1993, included (or
incorporated by reference) in Westamerica Bancorporation's Form
S-4 Registration Statement No. 333-17335, and to all references
to our Firm included in this registration statement. It should
be noted that we have performed no audit procedures subsequent to
February 17, 1995, the date of our
report. Furthermore, we have not audited any financial statements
of North Bay Bancorp as of any date or for any period subsequent
to December 31, 1994.




/s/ Arthur Andersen LLP
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Arthur Andersen LLP



San Francisco, California
March 24, 1997