Actually...
The following is from the CA Fish and Wildlife website at
https://www.wildlife.ca.gov/Conservation/LSA .
When is Notification of Lake or Streambed Alteration (LSA) required?
Fish and Game Code section 1602 requires an entity to notify CDFW prior to commencing any activity that may do one or more of the following:
Substantially divert or obstruct the natural flow of any river, stream or lake;
Substantially change or use any material from the bed, channel or bank of any river, stream, or lake; or
Deposit debris, waste or other materials that could pass into any river, stream or lake.
Please note that "any river, stream or lake" includes those that are episodic (they are dry for periods of time) as well as those that are perennial (they flow year round). This includes ephemeral streams, desert washes, and watercourses with a subsurface flow. It may also apply to work undertaken within the flood plain of a body of water.
....sooo....
Being as how the water has to drain somewhere....and is more than likely to contain silt....and alter the stream bed via erosion and deposition....
A permit from the water Gestapo is required. And it's expensive. And a pain in the ass.
Unless I've missed some landmark victory in the fight for our mining rights here in California, which I very well may have, in which case fill be in brother!
And would you cut the Victor crap already, Id run circles around that old koot. Might as well be sayin I play baseball like a girl.