Alright I have searched for awhile and haven't found exactly what i am looking for. first off i am planning a on using a 12 in dual wall corrugated pipe for my overflow not a stand pipe, was wondering what everyone's thoughts were are installing a 90 aimed up in the air or down towards the water to help keep fish and debris out of it. Also any possible problems with installing this closer to where the dam ties into to virgin ground as opposed to right in the middle of the fill. One last thing what are you doing around the outlet of the pipe for erosion and keeping critters out and making sure a mower wheel or someone don't get caught. thanks chris
You have slope the pipe for water to naturally flow down it. You could always weld some sort a screen on there to keep fish in your pond. On the other hand, it could clog with sticks and debris if you ever have a flood.
ok so I thought I would post this since it is similar to my original post. I did get a 3/4 acre pond dug and it is almost full. My only concern is that I dont think the water height is going to be quit as high as I would like it do to the overlfow pipe level. I was thinking about putting a 45 or 90 water tight elbow on my 12 in double wall pipe but was curious as to what would happen in the winter since the pipe would be underwater when the pond freezes? I attached a crude drawing of what i am talking about. thanks chris
I have a pretty large outflow pipe (15" PVC) and used an inlet water control structure from AgriDrain. I have not had any problems with it for a couple winters, but it is pricy. However, you can control how much rise you want in 4" increments. I had an established pond with an existing emergency spillway. This device allowed me to raise the water level gradually over three years to just the level I wanted. All in all it was a cheap way for me to get a pond with greater depth.
Chris, is your pipe PVC also? If so, what about merely slipping the elbow over the pipe without gluing it? Depending on how snug it fit would determine how much leakage you will have. Then, if you were worried about it freezing, you could remove the elbow in the winter and draw down the water to the normal overflow level.
One of my ponds has two drain pipes, one for lower water in the summer, and a higher setting to make sure the concrete deck is fully covered in wintertime, to protect the top from popping off when it freezes. To raise the level in winter, I just slip a plug over the end of the pipe. It trickles some, but not enough to draw down the water level. It freezes UNDER the ice every year, no problem. I don't know what might happen if it were encased in the ice itself.
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If we accept that: MBG(+)FGSF(=)HBG(F1) And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1) Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT? PB answer: It depends.
yes the overflow is pvc plastic, the water tight fittings have a rubber seal to seal the water out. I thought about removing in the winter depending on how tight the seal was. The other thing i should mention is I was thinking about putting an aerator in the pond so I thought about moving it to towards the overflow pipe in winter to keep it from freezing, but i wouldnt want to run it all the time. I appreciate the thoughts, advice and previous experiences please keep them coming so I can make up my mind.
You do not need to do anything with the pipe to intall the "INLET" type of device. The only thing is you need to fasten it down well so it cannot float up. I built a dock over my overflow pipe and used it to hold the box down.
ok i see what you are talking about now. This wouldnt be a bad idea and with being able to have somewhat control or the level would be nice, I would only need a short 2 foot one. do these have anchor spots on the bottom, I was wondering if I could just auger out a hole and use a form to get the height i need and anchor it to that. but even then the agridrain will be in frozen water during winter unless i drain to the lowest point.
One last thing, Do the removable slides go all the way to the bottom or is there a section that is not removable? thanks again
The removable sections go all the way down, but no reason to drain it in the winter. I am in central Indiana and have had no problems with ice. There does not appear to be a way to fasten it down from the bottom. A cable over the top fastened to anchors in concrete would work. Possibly a concrete base with some eyelets would do the trick. The cable could be tightened with a turnbuckle. I think you should call AgriDrain and ask them though, if you are willing to spend the money. They have been very helpful to me. We had a couple wetland mitigations done on our place and the contractors used the inline versions on both wetlands. They seem to be pretty durable. BTW, I also ordered the 2 foot version.
alright thanks for the help, you have been very helpful this cold snowy ohio day. I will see if i can get ahold of agridrain and see what they have to say about anchoring. thanks again
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