Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? Draining a pond with a siphon

I have a couple of postings on here about when I drained my 1 acre (deep) pond and used a siphon for probably 70% of it.

As many have said you eventually lose vacuum and then you'll need a pump, but I managed to lower the water level considerably with just the cost of the PVC/flex couplings/trash cleanout/etc. If you can run the PVC through your existing culvert I'd do so - made for a cleaner solution and for me anyway made mowing a lot easier.

I found that I lost siphon less often with a 45 degree coupling on the downhill end of the pipe. Someone on here suggested that and it worked, I don't know why but it did.

Definitely put a screen/similar on your intake end. I stopped up my siphon and had to restart SEVERAL times due to fish too stupid to swim away/turtles/etc. I'd recommend a piece of PVC with a bunch of holes drilled in it and capped so even if a few holes get blocked you still have intake.