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Leaky Pond - Pond sealer
#533959 04/16/21 10:10 AM
Joined: Nov 2017
Posts: 53
Likes: 1
J
jpws Offline OP
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J
Joined: Nov 2017
Posts: 53
Likes: 1
My leak has gotten worse over the past few months. The pond level is at an all time low ( about 3') and seems to drop about .5" per day. It didn't drop this fasts for the past 2 years....not sure if the super cold spell we had in FEB with the extended freeze caused the leaky areas to expand or what, but I'm going to try a sealer.

I'm aware of SOILFLOC and DAMIT.
https://shop.naturalwaterscapes.com/soilfloc-pond-sealant/

https://shalex.com.au/damit-dam-sealer/#:~:text=DamIt%E2%84%A2%20Dam%20Sealer%20is,seal%20leaking%20dams%20and%20ponds.&text=The%20water%20pressure%20(hydrostatic%20pressure,of%20the%20pond%20or%20dam.

Has anyone used either with any success?

All thoughts and comments would be appreciated. My HBG are all about 7-8" now and I'd hate for the water level to drop too low. I have a backup plan on where i could "store" them ( in a new neighborhood retention pond) if it came down to seining the pond, but i'd rather not go that route.

thanks


.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
Re: Leaky Pond - Pond sealer
jpws #533962 04/16/21 10:29 AM
Joined: Oct 2018
Posts: 666
Likes: 66
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Joined: Oct 2018
Posts: 666
Likes: 66
SoilFloc reduced the seepage through the dam on my pond.

Re: Leaky Pond - Pond sealer
jpws #533987 04/16/21 06:42 PM
Joined: Jan 2008
Posts: 8,551
Likes: 14
Chairman, Pond Boss Legacy award; Moderator; field correspondent
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Joined: Jan 2008
Posts: 8,551
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Hi JPWS

Sorry to hear about your pond leaking issues. I've used the polymers on the market, have been helping guys on the forum with leaking ponds the last several years, and am happy to help walk through your solutions. Feel free to reach out - my time is always free to the Pond Boss family!

TJ

tj@hudlandmgmt.com


Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

[Linked Image from i1261.photobucket.com]


Re: Leaky Pond - Pond sealer
jpws #534121 04/19/21 05:33 PM
Joined: Sep 2017
Posts: 28
Mal Offline
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Posts: 28
Since we are talking leaking ponds, I'll chime in for some advice. I have a 1.3 acre pond, spring fed with a decent flow. It's at least 80 years old so relatively shallow; 18 inches to 5 and a half feet. I rebuilt it about 4 years ago by replacing some of the dam. It originally had a drain that stood proud in about 12 feet of water. That drain is nowhere to be seen and has been like that for many years. The old dam has a leak near where I think the old drain outflow would have been. There is one other suspect area where the water may be getting in to the bank that I fixed rather poorly when rebuilding.

I'm thinking some dye might tell me if the second mentioned leak is the culprit and one of the polymers or bentonite might fix it. The old outflow won't be so easy to prove, find or fix.

Any suggestions are more than welcome.

The pond always flows out of my new outflow but if I try to raise the level even 3 inches, the leaks dominate and the outflow stops. I'd like to raise the level by a foot or more....


1.3 A, 80 yr old, renovation summer 2017, SW VA, 2000' elevation, Shallow, Spring Fed, Little Watershed, Stock Fall '17 with LMB, BG, RESF, FHM. Indigenous: Triploid Grass Carp, Israeli Carp, GSH
Re: Leaky Pond - Pond sealer
jpws #534125 04/19/21 06:36 PM
Joined: Nov 2007
Posts: 512
Likes: 26
F
Lunker
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Joined: Nov 2007
Posts: 512
Likes: 26
Mal,

You have two potential water outlets for your pond (not counting the new outflow you installed).

The first is a leak through or around the old outflow that has suspiciously disappeared (or through some other spot in the dam). The second is the spring itself.

You mentioned using dye, I assume you have some sort of running or flowing water below your pond?

The easiest thing to try might be lowering your outlet, and lowering the level of your pond. Observe the outflow area when presumably most of the water is going through your outflow. Then raise your outflow back up above normal pool level. Observe the outflow area then and see if you can discern a difference. If so, then the dye could confirm your leak and maybe help you pinpoint where to dig for repairs.

However, you could be in the second situation, and your pond is losing water to the spring itself. You said that if you raise your new outlet even 3" the water level never gets that high. Does the water level stay at almost exactly the same level when you raise the outlet? If so, then it may be that the level of the spring sets the water level in your pond. Raising the dam and the new outlet will not work in that situation.

That is just one geologist's internet opinion - so it is not worth much without observing your actual situation.

My advice would be to keep experimenting with your pond. More data will certainly help in trying to figure out exactly what is going on.

Good luck!

Re: Leaky Pond - Pond sealer
Mal #534127 04/19/21 07:10 PM
Joined: Jan 2008
Posts: 8,551
Likes: 14
Chairman, Pond Boss Legacy award; Moderator; field correspondent
Lunker
Offline
Chairman, Pond Boss Legacy award; Moderator; field correspondent
Lunker
Joined: Jan 2008
Posts: 8,551
Likes: 14
Originally Posted by Mal
Since we are talking leaking ponds, I'll chime in for some advice. I have a 1.3 acre pond, spring fed with a decent flow. It's at least 80 years old so relatively shallow; 18 inches to 5 and a half feet. I rebuilt it about 4 years ago by replacing some of the dam. It originally had a drain that stood proud in about 12 feet of water. That drain is nowhere to be seen and has been like that for many years. The old dam has a leak near where I think the old drain outflow would have been. There is one other suspect area where the water may be getting in to the bank that I fixed rather poorly when rebuilding.

I'm thinking some dye might tell me if the second mentioned leak is the culprit and one of the polymers or bentonite might fix it. The old outflow won't be so easy to prove, find or fix.

Any suggestions are more than welcome.

The pond always flows out of my new outflow but if I try to raise the level even 3 inches, the leaks dominate and the outflow stops. I'd like to raise the level by a foot or more....

Hi Mal:

Happy to walk through some thoughts on identifying the leak area, you're on the right track, but am happy to chat sometime. Feel free to contact me anytime, here to help.

TJ


Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

[Linked Image from i1261.photobucket.com]



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