total water surface is about 6-7 acres when full, i live n door county wi and the limestone is very close to the surface so there is limited topsoil. The water is mostly fed thru the ground but the water table is what determines the pond depth. it was basically all ash trees and canary grass when we blocked the ditch with a berm that drained that portion of the property. killing canary grass is/was a full time job but you can knock it back, when you finally do lots of natives make their way back into the wetland.