This topic is very interesting to me, as I have a related question about a pond I have just acquired. I have a 1.5 acre pond; the deep end is around 12 feet deep, but at the shallow end, it is way to shallow. When it doesn't rain for several weeks, I'll have an area that is just weeds, no water; when it rains a lot (like it has recently), it will fill up to about 6". I'd like to dredge some of it up and make the shoreline a little fuller. By the way, this is an older pond that has some large catfish in it; I'd hate to drain the whole thing. And if I drained it halfway, how long would it take to refill?