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gehajake, jludwig, RAH
Total Likes: 3
Original Post (Thread Starter)
#543085 01/17/2022 1:53 PM
by day18
New 8 acrea pond being built. Started thinking it would be amazing to be able to drain it when needed. I have someone digging it for the dirt so dam won’t be but 6foot high. Supposed to be 8-15 deep in parts. My question is what the best type of Maintanace free drain system to install. We will have an overflow and emergency spillway also. Thanks.
Liked Replies
#543116 Jan 17th a 10:46 PM
by esshup
Originally Posted by RAH
esshup - I have a bottom drain in my first pond for which the plastic valve has never been opened and it worries me... What type of maintenance is recommended on a siphon drain?

The only thing I would do with a siphon system is check it to make sure it isn't clogged or won't start siphoning when needed. I would recommend starting the siphon once a year before the "rainy season" (if there is such a thing anymore) just to make sure that it is working properly, then you can break the siphon to shut it down. Better to find out that there is a problem before the rain hits than to have to fix it during a storm.
1 member likes this
#543226 Jan 20th a 06:42 PM
by Redonthehead
I installed a 2” PVC drain under my pond dam while it was under construction. The intake is a vertical pipe with ¼” holes drilled into it standing up about 4’ off the bottom at the deepest point. It is surrounded by a 24” diameter plastic pipe that is filled with 1.5” rock to “filter” the water going into the drain. The outlet is a 2” PVC ball valve ending with 2” pipe thread which I can attach a flexible hose (I have two of Harbor Freight’s 2” suction hoses). The outlet is set behind the base of the dam about 3’ down in the ground inside 24 inch diameter pipe with a lid on it. I have an attached “T” handle to open/close the valve.

It worked well to keep water from building up in pond before the dam was done, and I occasionally use it to lower the pond water for projects. Initially I thought I would use it to fill water tanks but have a better source now.

The water coming out from the bottom of the pond does have that somewhat rotten egg smell. I'll open it up and let it run sometimes in the summer if there is water to spare.
1 member likes this
#543545 Jan 30th a 10:42 PM
by Rainman
Originally Posted by day18
Syphon seems like a cheap alternative. Anyone have one installed? Tips or tricks?

I install siphons at grade, so there are no pipes that can get broken. Completely freeze and clog proof. All you see is an access cover, like for water mains
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