Thanks for the reply Quarter Acre. There is a chance it is smaller than a quarter acre. I didn't have an accurate measurement. The previous owners told me that there were no fish in there. I have never seen any either. I think what happens is the creek overflows with too much discharge and then it goes into the pond. That's why it is considered a "Flood plane". The creek is way to shallow to hold fish. So I'm pretty sure there is no fish in there?

Does anyone have any advice on the grass carp?