Water Code § 12582

Fish and wildlife values, both economic and recreational, shall be given consideration in any flood control or water conservation program. In the design, construction, and operation of projects, when engineering and economic features of the project make it practicable, adequate provisions shall be made for the protection of migratory fishes, and the designs for structures and facilities required for such protection shall be prepared in cooperation with the United States Fish and Wildlife Service and the California Department of Fish and Game.