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Posted: 4/5/2024 10:00:28 PM EDT
The dam I want to build in one of the valleys on my property will have to be about 30 feet high. Anyone deal with larger stock pond dam projects?
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USA
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Posted: 4/6/2024 12:55:22 PM EDT
[#1]
You should post this in the Montana htf.
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Posted: 4/6/2024 1:01:43 PM EDT
[#2]
Quote HistoryOriginally Posted By dillydilly: You should post this in the Montana htf. I have. Just spreading it to cover neighboring states as well. |
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USA
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Posted: 4/7/2024 12:46:24 PM EDT
[#3]
Quote HistoryOriginally Posted By Ben: I have. Just spreading it to cover neighboring states as well. Ah gotcha. 👍 |
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Posted: 4/8/2024 11:10:22 AM EDT
[#4]
Is that going to be 30 above grade? Or how deep you want the pond to be.
I think we dont need engineering until over 15', but It can be deeper behind the dam. |
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Posted: 4/8/2024 12:45:19 PM EDT
[#5]
Quote HistoryOriginally Posted By 77fixer: Is that going to be 30 above grade? Or how deep you want the pond to be. I think we dont need engineering until over 15', but It can be deeper behind the dam. The pond needs to be 24 feet deep at center. Given the narrow V shape of the valley, a little bit of excavation ought to allow that staying under 15' for dam height, right? Bonus, I need to pull a bunch of stone out of the ground for another ongoing project anyways. |
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Posted: 4/8/2024 1:12:41 PM EDT
[#6]
That is how I plan to do one. Our soil is mostly clay and rock, so I planned use what I dig out to build the dam.
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Posted: 5/1/2024 12:47:30 PM EDT
[Last Edit: Eukatae]
[#7]
I've built several ponds but never anything even close to a 30'. How many acre/ft. will be behind the damn?
ETA: also what will be the span of the damn at the top? |
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Posted: 5/1/2024 12:55:06 PM EDT
[#8]
Quote HistoryOriginally Posted By 77fixer: Is that going to be 30 above grade? Or how deep you want the pond to be. I think we dont need engineering until over 15', but It can be deeper behind the dam. Good question though remember you will need to excavate a few feet of material at the base of the damn before laying in the new damn. Otherwise water will run under it though the natural soil and eventually erode it enough to take out the damn (if it manages to hold any water at all). |
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Posted: 5/1/2024 2:29:32 PM EDT
[#9]
Quote HistoryOriginally Posted By Eukatae: I've built several ponds but never anything even close to a 30'. How many acre/ft. will be behind the damn? ETA: also what will be the span of the damn at the top? 15 acre/feet. I poorly phrased this early on. The dam needs to provide for a 24 foot depth at the deepest point behind it. Excavating down 15 feet ought to let the dam be much shorter than 30 feet, right? |
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Posted: 5/5/2024 12:48:53 PM EDT
[#10]
Quote HistoryOriginally Posted By Eukatae: Good question though remember you will need to excavate a few feet of material at the base of the damn before laying in the new damn. Otherwise water will run under it though the natural soil and eventually erode it enough to take out the damn (if it manages to hold any water at all). That probably explains the need for a keyway. I thought that they were more for strength. I hadn't considered leakage under. |
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