a 1/2 acre pond 10' max depth has roughly 5 ac/ft water in it.
Yeah, that's about what I figured in my calculation. The people I've talked to all mention this "one acre rule', which would be true with an average depth of 10 feet, which is pretty high for the average 1 acre pond.
A 1/2 acre pond that's 20 feet deep holds the same amount of water as a 1 acre pond, that's 10 feet deep (roughly).
