ok i have a 5,000 to 6,000 sq foot pond. it is 16 foot deep at the deepest point - rest is maybe 6 ft. the pond has leaked since installed. we ran into sand moisture and gravel at 16 foot. no apparent leaks where i had to build up the area around the pond to hold water ( i guess you call that the dam).

sand was down to 5 foot when we hit some clay and sand. i have put in 5,000 lbs of bentinite prior to the last application. the last application was 5,000 lbs for a total of 10,000 lbs.

the pond leaks currently at 1" a day when full and a little more when it goes down further because of the sides comming in.

adding bentinite did not seem to make a differece. also , when my contractor built it it would not hold so we trucked in 30 truckloads of clay and spread all over. the bentinite was added later when it still leaked.

right now i am looking at 5 possibilites

1 let pond leak to where it does not (it has some fish) drain a 1/2 or 1 foot more out then add bentinite at 1" thick. is the bentinite calc right 1" thick for area.

2 drill a well with a float valve and dig a well to flow into it. then say hell with it!!

3 see about putting a liner in (oh cost of this?)

4 haul dirt and give up. ie. fill it in. in which case i'll have a kosko areator for sale cheap.

5 look at ess 13. ( cost etc) and does this work for this problem?

i calculate the pond to be about 30,000 acrea ft cause of the depth.

your help would be appreciated.

thanks

bob fulton