Cal. Fish & Game Code § 1602
(a) An entity shall not substantially divert or obstruct the natural flow of, or substantially change or use any material from the bed, channel, or bank of, any river, stream, or lake, or deposit or dispose of debris, waste, or other material containing crumbled, flaked, or ground pavement where it may pass into any river, stream, or lake, unless all of the following occur:
(1) The department receives written notification regarding the activity in the manner prescribed by the department. The notification shall include, but is not limited to, all of the following:
(4) One of the following occurs:
(A)
(b)
(1) If an activity involves the routine maintenance and operation of water supply, drainage, flood control, or waste treatment and disposal facilities, notice to and agreement with the department shall not be required after the initial notification and agreement, unless the department determines either of the following:
(d)
(1) Notwithstanding subdivision (a), an entity shall not be required to obtain an agreement with the department pursuant to this chapter for activities authorized by a license or renewed license for cannabis cultivation issued by the Department of Cannabis Control for the term of the license or renewed license if all of the following occur:
(A) The entity submits all of the following to the department: