GP, I would presume the comment of a poorly designed pond was the lack of forthought as to runoff and no catch filters, but i could be wrong. Am i righ that you say these average 12-15 foot in depth or is it 12-15 inches? I am going to presume you are talking inches. That being so, i wonder what the average temps are? Could there be any algae eating fish (or other animals) capable of surviving the heat from such shallow water in california's heat along with the toxic runoff? Another thought is if you were able to drain and spray them clean, where would the stuff go? Is there a low area safe for it to go to? Would you have to have it shipped off to some decon site and scrubbed clean before you could legally dump it? This is afterall california along with its over the top regulations.
