it's a pond and it is only about 50 ft. x 30 ft. It's teaming with golden shiners, and bullheads. I throw bread on top of the water and the water just boils with shiners eating the bread, and you can watch the bullheads come up and eat the shiners also! It's a pretty cool pond. I put tiny pieces of worm on a hook with a small sinker and put it on the bottom and catch bullheads all day long. They are pigs!