Cal. Water Code § 12887.4

A public agency may include recreation and enhancement of fish and wildlife, or either of them, as functions of a project which the public agency is empowered by law to construct and operate, and may construct and operate the project for such recreation and enhancement of fish and wildlife functions, or either of them, in accordance with the provisions of a grant contract entered into with the department, including provisions for public use of the project facilities for fishing and other recreational activities.