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Joined: May 2003
Posts: 219
Lunker
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OP
Lunker
Joined: May 2003
Posts: 219 |
I'm having a dam constructed across a creek that runs thru my property. The creek drops about 12 ft over 1500 ft from a county road. I'm planning on bringing the water level up to the culvert pipes below the county road. The creek is quit deep and about 200 ft wide at some points. The dam will be constructed at a narrow (about 50' wide) location about 1600 ft down from the road. The soil is mostly clay, but the creek sides have a heavy concentration of silted black soil. Can such a dam project as this be core trenched ? Most of the soil for the dam embankment will have to be pushed from the silted creek sides. I plan on two 10" pvc siphon pipes for overflow. Does anyone have info on creek dams such as I've described ? I talked to the NRCS people, but they were unresponsive.
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Joined: Apr 2002
Posts: 3,347 Likes: 99
Editor, Pond Boss Magazine Lunker
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Editor, Pond Boss Magazine Lunker
Joined: Apr 2002
Posts: 3,347 Likes: 99 |
Read Mike Otto's column in Nov/Dec issue of Pond Boss. That's exactly what we did, without the worry of a county road.
Teach a man to grow fish... He can teach to catch fish...
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Joined: Apr 2003
Posts: 1,097 Likes: 18
Lunker
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Lunker
Joined: Apr 2003
Posts: 1,097 Likes: 18 |
Squeeky, Sure it can be done if the watershed is appropriate. But, I've seen dry creekbeds go 15 feet deep with a 3-4 inch downpour. If you haven't done this already, get an experienced dozer operator to check topographical maps for your watershed and build accordingly...the last thing you want is a washout. If the water doesn't run over the road, and you match the pipes, you should be fine.
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Joined: Oct 2003
Posts: 182
Lunker
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Lunker
Joined: Oct 2003
Posts: 182 |
Squeek just a question at the point where you damm over creek bed will water seep under the bed below suface and wash out damm. Or is it at the point where it goes under the road. Maybe suggest a cross core trench in stream bed with clay dowm to desired soil to prevent undermine.
Scott Trava Catskill Pond http://catskillpond.com scott@catskillpond.com Returning Catskill Waters To A Simpler Time EST. 1923
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Joined: Apr 2004
Posts: 2
Junior Member
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Junior Member
Joined: Apr 2004
Posts: 2 |
I am new to this forum but have a background in geology and a creek that I am also considering damming. The important consideration here is flood stage and sediment load. With much drainage area at all your pond will overflow the dam. If you install only two culverts for drainage the odds are the dam won't last. Two common dam types are first a dirt dam with a clay wall and an overflow built into a hillside. The other type of dam is like a low water crossing. This is made of cement which allows flood stage water to run over it. This can be constructed in an arced wall or with a road on top and sloping sides. This is best for high rates of water flow with large sediment loads, it allows the creek to scour the sediment buildup in the bed and not silt up. If you want a culvert to control the high water level you could use it in conjunction with an overflow built into the hillside. The culvert will need a plate of steel welded around it like a big washer. This will keep water from channeling along side of it and the overflow need an apron to keep flood water from washing back in under the dam.
Good luck, my creek has washed out a couple of dams in the last 100 years.
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BG sex?
by Bill Cody - 05/16/24 08:50 PM
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