Sink Hole
#1
Typical Buck
Thread Starter
Join Date: Jan 2007
Location: Hillsdale,IN
Posts: 552

Our pond has been dropping for months and it finally is low enough that we can see the problem. There is a sinkhole about 3 foot across sucking water out. We lined the bottom of the pond with about 2 foot of clay, but there is alot of sand under it and I think that there is an underground spring that is pulling all the sand and clay down through it. We are going to try and dig out the area atleast six feet deep and cram it full of clay. If you have any suggestions, please let me know. Thanks
#3
Typical Buck
Thread Starter
Join Date: Jan 2007
Location: Hillsdale,IN
Posts: 552

I was thinking the same thing, it is probably just going to keep sucking away what ever we put in it. We might try multiple things like putting concrete in it,then put down a lineing, and then finish it off with a couple feet of clay. It might be hopeless but I have a hard time just not doing anything.
#5

ORIGINAL: Roadkillwarrior
Our pond has been dropping for months and it finally is low enough that we can see the problem. There is a sinkhole about 3 foot across sucking water out. We lined the bottom of the pond with about 2 foot of clay, but there is alot of sand under it and I think that there is an underground spring that is pulling all the sand and clay down through it. We are going to try and dig out the area atleast six feet deep and cram it full of clay. If you have any suggestions, please let me know. Thanks
Our pond has been dropping for months and it finally is low enough that we can see the problem. There is a sinkhole about 3 foot across sucking water out. We lined the bottom of the pond with about 2 foot of clay, but there is alot of sand under it and I think that there is an underground spring that is pulling all the sand and clay down through it. We are going to try and dig out the area atleast six feet deep and cram it full of clay. If you have any suggestions, please let me know. Thanks
#6
Join Date: Aug 2004
Location: Roanoke, VA
Posts: 730

I suggest you cut your losses! You may be able to temporarily stop the leak, but if it is a true sinkhole you would be wasting time and money trying to stop the leak. Sinkholes are great places for ponds until they leak and then it is all over.
#7
Nontypical Buck
Join Date: Feb 2003
Location: Ontario Canada
Posts: 2,059

#9
Nontypical Buck
Join Date: Feb 2003
Location: west central wi USA
Posts: 2,210

A spring, by definition, is where waterdischarges out of the ground. A spring can't suck water into the ground. A recharge area is where the water goes into the ground. A recharge area occurs where you have very permiable soil such as sand or an area of fractured bedrock where water can run in from the surface. If it is a sandy layer, you'll have todig it out to a depth of about 3 feet below the planned bottom of your pond and repack with clay or even a layer of bentinite, which is an extremely water-tight clay. If you have fractured bedrock, you'll have toexcavate it down to the cracks and seal them with bentinite.