The BOW that I resuced those RES from has an a lot of water that is <10' deep, with the max. depth of 31'. It is fed from 3 different streams, and it has at least one spring feeding it. I'm assuming that the spring feeding it is also the deepest part of the lake - that depth has never changed over the past 70 years of topographic maps, where the rest of the lake has filled in, some areas are 10' shallower than they were. The state had J.F. New install settlement ponds on the largest stream that flows into the lake, which has helped, but there is still a lot of sediment that flows into the lake. My pond is 1 to 1 3/4 ac, with the deepest water 18'.