Swanney,
Eastland could not be more correct!! I am STILL haveing difficult with my lake I just built. I have been at this for 5 to 6 years now! Still no success lakes and pond are VERY tough...to top it off the CORE can be a big enemy!!
Please!! do your home work!! Make SURE your do you Arithmetic and everything makes logical sense, a ten acre lake would worth much more than two 5 acre ponds, but a ten acre pond is extremly tough to build..