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Jan 10th, 2023
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Joined: Apr 2017
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Joined: Apr 2017
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I've had a leak in my pond dam for about 18 months now. The good news is I know exactly where it is. The bad news is, I can't see to plug it and I don't know for sure what is making it. I have plugged it many times with bentonite and it just comes back, in the same place. FYI I don't know where the water goes. It's about 5' down from the normal water line of the pond. When it leaks, it drops pretty quick and then holds good at that point. It's about 10' from my overflow pipe, but the water does not come out where the overflow does (or anywhere that I can see). I have a video from the first time I found the hole and it's about 4-5" across, so I thought probably muskrat. When I plug it with bentonite, the hole is usually back within a few days. However, a lot of times it's much smaller, 1-2", more like a crawdad hole size, which doesn't seem anywhere near big enough for a muskrat. I started plugging it with regular bentonite from the CO-OP. After I went through a couple of bags, I bought Halliburton Bentonite that is specifically for plugging things. What in the heck is doing this to me? Pond Leak Video
Last edited by Brian Gregory; 04/03/17 09:21 AM. Reason: left out a couple words
Thanks,
Brian Gregory
brian@netinn.com
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Joined: Oct 2015
Posts: 2,424 Likes: 19
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Joined: Oct 2015
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Looks like a sinkhole. I would dig out around it as deep as possible and pack in heavy clay, compacting as much as possible. Maybe put in some geotextile underneath first.
Last edited by John F; 04/03/17 09:25 AM.
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Joined: Jan 2006
Posts: 2,386
Ambassador
Field Correspondent Lunker
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Ambassador
Field Correspondent Lunker
Joined: Jan 2006
Posts: 2,386 |
Wow, that is as strange as Sunil! I don't have a clue but I hope you get it figured and fixed.
Welcome to the forum, hopefully you're future posts will be of good things.
Do nature a favor, spay/neuter your pets and any weird friends or relatives.
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Joined: May 2009
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Lunker
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Lunker
Joined: May 2009
Posts: 5,722 Likes: 282 |
Field tile that was not removed?
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Joined: Mar 2014
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Joined: Mar 2014
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How about filling with dry sackcrete, then build a 3'x3'x 4" frame and pour 2 or 3 more sack around the top?
Last edited by BrianL; 04/03/17 11:08 AM.
1.8 acre pond with CNBG, RES, HSB, and LMB
Trophy Hunter feeder.
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Joined: Oct 2014
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Joined: Oct 2014
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I think I would dig it out a good bit to see what's there. If the hole stays the about the same size or smaller, I would pack it with a tub of hydraulic cement (it expands and cures under water) followed by filling the rest of hole back in with Quikrete.
![[Linked Image]](http://forums.pondboss.com/ubbthreads.php?ubb=download&Number=11852&filename=I_subscribe_zps2qlyoyn2.gif) Be Brave Enough to Suck at Something New!
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Joined: Apr 2017
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Thanks guys, Will check it out.
Thanks,
Brian Gregory
brian@netinn.com
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Joined: Aug 2006
Posts: 5,712 Likes: 3
Moderator Ambassador Field Correspondent  Lunker
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Moderator Ambassador Field Correspondent Lunker
Joined: Aug 2006
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Wow. If it was here in WV, and it wasn't caused by our crazed muskrats, I'd chase it as a limestone sinkhole. I don't know if you have such issues where you live. I live very close to, and I fish at the entrance and exit of the Lost River. See more info below. In any case, if it was my pond, I would start by contacting the local NRCS Office. They were previously known as the Soils and Conservation Service. I'm retired from most everything and have not had contact with them in the last few years. Hopefully, they have not been budgeted out of providing assistance. They know local soils and waters better than anyone. Good luck, Ken "The Lost River is a 31.1-mile-long river in the Appalachian Mountains of Hardy County in West Virginia's Eastern Panhandle region. The Lost River is geologically the same river as the Cacapon River: It flows into an underground channel northeast of McCauley along West Virginia Route 259 at "the Sinks" and reappears near Wardensville as the Cacapon. The source of the Lost River lies south of Mathias near the West Virginia/Virginia border. Along with the Cacapon and North rivers, the Lost River serves as one of the three main segments of the Cacapon River and its watershed. The Lost River is a 31.1-mile-long (50.1 km)[2] river in the Appalachian Mountains of Hardy County in West Virginia's Eastern Panhandle region. The Lost River is geologically the same river as the Cacapon River: It flows into an underground channel northeast of McCauley along West Virginia Route 259 at "the Sinks" and reappears near Wardensville as the Cacapon. The source of the Lost River lies south of Mathias near the West Virginia/Virginia border. Along with the Cacapon and North rivers, the Lost River serves as one of the three main segments of the Cacapon River and its watershed."
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Joined: Jun 2007
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Ambassador Field Correspondent Hall of Fame Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
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It would probably be easist to fix properly and permanently by bringing in the proper size track hoe, building a small coffer dam, dig out, fill and re-compact the hole. With that much water having flowed through the hole, the void is going to be considerably larger when you get deeper. Plugging the entrance could possibly cause a complete dam collapse, and depending on water volume, cause considerable damage or death downstream.
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