Brettski and Eric, thanks so much for the (evap. links) research. Looks like our area (NorCal foothills) gets 35-45 in. loss/yr. Since my pond is currently down about 2 feet, and we have to make it to ~Nov., I must still have some (underground) seepage.......the creek below is not flowing at all like in years past, so we did "fix" the major leak.
Looks like if I want to keep full to brim, I'll need that well sooner rather than later.
