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Joined: Jan 2012
Posts: 13
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OP
Joined: Jan 2012
Posts: 13 |
I've been researching the siphon system but it may not be an option for me. We have a 4.5 acre pond and over 1/2 of it is surrounded by a creek that can rise 20' in a big rain event. We have a levee of course and when the creek level rises it is obviously much higher than my pond but our pond is spring fed and it can rise greatly too, but not as much as the creek. I understand that with a siphon system the discharge side must be at least 4' below the intake side. So in my situation the discharge side would be completely immersed in the creek. I assume the water pressure on the creek side (which will be higher than the pond side) would be too much for a siphon system to overcome?
Right now I have a straight pipe through the levee that I can open to let pond water out into the creek but I have to wait until the creek level goes down significantly before I can open it up (when pondside pressure is greater than creekside). If I could add a siphon system it would help a lot in keeping the pond level down, but I don't know if it would work for my situation.
Any thoughts or suggestions are greatly appreciated.
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Joined: Mar 2010
Posts: 222
Fingerling
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Fingerling
Joined: Mar 2010
Posts: 222 |
Not sure I'm picturing this correctly. Are you saying that when flooding, the level of the creek is higher in elevation than your pond level? If that's the case, then during those situations with the water pressure greater in the creek, water would flow backwards through the siphon from creek to pond - unless you put a valve on it too.
Does the creek ever top the levy and spill over into the pond? Or does it ever cause erosion problems for the levy? Like I say, not sure I'm hearing you right.
Now if the creek level is below the pond level, but the outlet is submerged, I think the pipe should still convey water from pond to creek, but may not ever be able to kick into "siphon mode".
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Joined: Jan 2012
Posts: 13
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OP
Joined: Jan 2012
Posts: 13 |
Yes when we get flooding the creek rises very quickly and takes many days to go down. Our pond rises during big rain events but for many days after (I assume because its spring fed) it continues to rise as well, but generally it takes quite a while for the creek level, after a big rain event, to drop below the pond level.
The creek thankfully does not come over the levee, the farmer's levee across from us is lower than ours so during big rain events it goes over the top of his levee and never comes over ours.
We do get erosion issues but I have been dropping rip rap along our levee to eliminate the erosion. Our levee is almost a 1/4 mile long so it requires a lot of rock to lessen the erosion but I'm making good progress.
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