1/4 th acre. there were so many bass that u could watch 3 or 4 follow ur lure in. ive fished it twice so far in the last week and im not seeing anything as far as bass go.but i did throw in some more bg, this time they were huge for around here. my hope is to keep throwing in bg and fish for bass every time i drop them off, so far no bass but the pond looks great and the water is crystal clear