California Code, Water Code - WAT § 8704

(a) Civil penalties may be imposed by a court of competent jurisdiction against any person or public agency that undertakes an activity, flood system improvement, or encroachment that is in violation of this part or that is inconsistent with any permit, cease and desist order, or enforcement order previously issued by the board or executive officer in an amount not less than five hundred dollars ($500) and not greater than thirty thousand dollars ($30,000).

(b) In addition to any other penalties, civil penalties may be imposed by a court of competent jurisdiction against any person or public agency that intentionally and knowingly undertakes an activity, flood system improvement, or encroachment that is in violation of this part or that is inconsistent with any permit, cease and desist order, or enforcement order previously issued by the board or executive officer in an amount that shall not be less than one thousand dollars ($1,000) or more than fifteen thousand dollars ($15,000) per day for each day in which the violation persists.

(c) In determining the amount of liability pursuant to subdivisions (a) and (b), the following factors shall be considered:

(d) Civil penalties may be imposed by a court of competent jurisdiction against any person or public agency that intentionally or negligently violates any cease and desist order issued, reissued, or amended by the board, or any enforcement order issued, reissued, or amended by the board in an amount that shall not exceed six thousand dollars ($6,000) for each day in which that violation persists.  Any actual penalty imposed shall be reasonably proportionate to the damage suffered as a consequence of the violation.