Redetermination of optimum flow; modification of plan; hearings.

Sec. 31312. After a determination or plan has been in effect for 5 years, any riparian owner may petition the department for a redetermination of the optimum flow or modification of the plan, and upon a showing of substantial changes in conditions, the department shall hold hearings as provided in section 31305 and may redetermine the optimum flow or modify the plan.