Cal. Pub. Res. Code § 9413
(b) If a district develops a long-range work plan pursuant to subdivision (a), the long-range work plan shall be adopted and updated every five years. Districts may amend the long-range plan before the five-year update in order to address substantive changes occurring since the adoption of the most recent long-range work plan. A district that prepares long-range work plans shall provide, either in digital or hard-copy format, for informational purposes only, long-range work plans and updates to these plans to the boards of supervisors and to the boards and councils of other public agencies with jurisdiction over resource conservation and management of every county with land in the district’s jurisdiction. The long-range plans shall serve the following functions:
(c) If a district develops an annual work plan pursuant to subdivision (a), the annual work plan shall be adopted on or before September 30 of each year in a format that shall be consistent with the district’s long-range work plan. A district that prepares annual work plans shall provide on an annual basis, either in digital or hard-copy format, for informational purposes only, annual work plans to the boards of supervisors and to the boards and councils of other public agencies with jurisdiction over resource conservation and management of every county with land in the district’s jurisdiction. The annual work plans shall serve the following functions:
(d) If a district develops an annual district report pursuant to subdivision (a), the annual district report shall be completed on or before September 30 of each year in a format consistent with the long-range and annual plans, so that progress made during the reporting period towards district goals can be readily determined. The annual report shall serve the following functions: