i dont have good clay buy they are trucking in 40 loads of clay that was dug out of a pond a mile away. it is like modeling clay literally...hope it works. unfortunately the pond is just shy of .5 acre but all i can do. it is 4-5' deep on the corners of the kidney bean shape and will be 8-10' on one half or so at the back of dam. I am clueless and would welcome any suggestions to what you see here with regard to slope, shape, depth, etc.
We will get a sheepsfoot and roll it in after putting the clay down.

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.20 acre pond-that leaks/4-5' deep. Stocked 6/22/19 with 300 BG(supposed to be HBG, removed 100+/- so far), 100 RES, 3carp. On 8/20 added 300 HBG, + 21 5"HSB. 8/21 added 5 8" SMB, one 10" LMB , one 14" CC