shawn thanks for the phone number. i may call you. right now i want to see how i progress. discing in the bentonite definitely plugged the middle some and im going to have to see what happens as the water comes up this spring. we havent had a trace of rain in over 3 weeks and i had to turn off my pump a week ago last Sunday. in 11 days its fallen about 12-13 inches. i think thats ok on new fill. i have about exactly one acre of surface with a max of maybe 5 feet depth. i may have stopped my real leak below but i need to see what happens as i spread out from there. my bentonite job covered about 80% of the area under water-the relatively sandy bottom center hole of my dam area. from here the water is really going to start spreading out on clay i have never had water on before. i need rain. i may call just for your brochure and your thoughts on how much drop is acceptable while i wait to see what happens. thanks.