Pond Boss Forums POND CONSTRUCTION Soil questions Bentonite!!

We used bentonite last year during the drought many ponds dried up due to leakage around rock formations,spill pipes, inward springs that back drained. Most applicatios worked out very well but on others it was not the magic cure. We used 30 mesh and mixed it with sand wash from the local quarry we sealed a hole in the bottom of a 2 acre pond approx. 100 foot area that was lacking fine clay particles.
A base of 12" of sand wash was put down then Knitted into existing pond bed then bentonite approx.5 pounds per square foot was mixed and knitted in then compacted. Pond was filled slowly and is still holding after one year. our sucess is always mix with sand .

Hope this helps Scott Trava