zhkent, I didn't think about pouring cement down the drain to use as a seal. I guess the only thing that muddies the water with running 10" down the entire length is the fact that at some point my overflow does a 45 out to the spillway. There is no way I'll be able to make that corner.
There's a good 6" of water entering the overflow at this time so I will have to wait until we have some kind of drought, or make an over the dam siphon to draw it down.
I do have an emergency spill way that does in deed work. As we found out two summers ago after a 6" down pour in 3 hours. It trashed the pond for the year as it washed every corn cob in the county (seemed like)
into it.
Thanks guys, I was thinking it should work but needed some reassurance. If I get it done this summer I'll take pictures so it can be documented and shared with others.
FH
