king_fish, where there is a will, there's a way, however, your way may be more difficult than for other geographical locations. Fresh Water and the West Coast are big issues.
Many of us would cut a pond into our own land with no permits or approvals from any kind of agency.
Others may go through government agencies for approval and permits.
If I were you, I would continue to do research WITHOUT contacting any agency.
Put another post up here like "Calling any CALIFORNIA Pond Bosses." There are several California people on this board.
Once you know some more local pond people, you can get some more regional info.
I would also start to compile the various regulations in hard copy. I think you will find that a lot of them are vague and contradictory on land owner rights.
From there, you may see some clear direction.
Please don't give up yet. Having your own pond is one of the greatest things ever, and it's a legacy to pass down for generations.
