Cal. Water Code - WAT § 9130. Section 9130.
(a)
The department shall prepare and maintain maps for levee flood protection zones. The department shall prepare the maps by December 31, 2008, and shall include in the maps a designation of those lands where flood levels would be more than three feet deep if a project levee were to fail, using the best available information. The maps shall include other flood depth contours if that information is available.
(b)
The department shall distribute the levee flood protection zone maps to appropriate governmental agencies, as determined by the department.
(c)
The department shall make the maps readily available to the public. The department may charge a fee for the cost of reproducing the maps. To the extent feasible, maps shall be made available on the Internet Web site of the department.
(d)
The department may periodically revise the maps to include updated information when that information becomes available.