Thanks for the reply. The area is Giddings Texas (between Austin and Houston on Hwy 290). Texas is currently in an epic drought so I'm pleased any surface water remains.

I plan to drill several holes (fence post auger 4" x 4' deep)and see how much (if) they fill and hold water. Any clay will have to be hauled in. I don't yet know the availability of quality clay in close proximity. I'm sure Houston has a bunch.

I want fish in the lake and in fact have nice bass in the upper area of the stream bed. The stream is divided by a low water crossing (spillway) with the elevation difference in water surface level of about 5-6 feet. The up stream is higher and spill into the lower area (my new lake site).

Do you know if a water table can/will hold water in a lake? I can drive my self crazy with senarios.

regards ray