California Code, Water Code - WAT § 56095

In addition to all of the powers enumerated in this part, a county drainage district shall have the power to adopt by resolution and carry out any definite plan or system for accomplishing, facilitating, or financing all work which may be lawfully accomplished by a county drainage district and to enforce the plan or system by resolution.  In order to carry out the plan or system, a district shall have the power, by ordinance, to prescribe, revise, and collect fees and charges for providing storm drainage facilities, including drainage outfall facilities, furnished or to be furnished to any new building, improvement, or structure constructed or to be constructed in the district;  and whenever a storm drainage problem is referred to the district by any county or city located in whole or in part within the boundaries of the district, to require the installation of drainage improvements necessary or convenient for the needs of the district, including, but not limited to, residential, subdivision, commercial, and industrial drainage needs.  Any county or city is hereby authorized to refer all drainage control problems arising under the Subdivision Map Act (commencing with Section 66410 of the Government Code) or otherwise to a county drainage district for solution.  Revenues derived by a district under this chapter shall be used only to acquire, construct, reconstruct, maintain, and operate storm drainage facilities, including drainage outfall facilities, consistent with the plan or system.