Cal. Water Code - WAT § 26000. Section 26000.
A board shall order the collector to cancel or modify, as may be proper, an assessment when it finds that any property has been either:
(a)
Assessed in any year more than once.
(b)
Assessed by reason of a clerical error for more than its full cash value.
(c)
Computed for assessment on an excessive acreage.
(d)
Assessed while not in the district.
