Cal. Gov't Code § 65865.5
(a) Notwithstanding any other law, after the amendments required by Sections 65302.9 and 65860.1 have become effective, the legislative body of a city or county within the Sacramento-San Joaquin Valley shall not enter into a development agreement for property that is located within a flood hazard zone unless the city or county finds, based on substantial evidence in the record, one of the following: