Question on the overflow - 10/24/11 02:08 AM
I have seen many plans for an overflow pipe that runs through the dam with baffles. Normally the pipe end that is in the pond has a tee with a valve on the horizontal end for pond draining, and the vertical run rises up to the desired height of the water in the pond, with a debris trap on top. The other end usually remains straight after it exits the rear of the dam and has rip rap around it to prevent erosion as water flows out of it.
I am wondering if a different scenario will work. What if the end of the pipe inside the pond still has a tee, with the horizontal run capped and the vertical run only rising a foot or so to keep it well above the mud? The other end that is on the outside of the pond also has a tee with the horizontal run capped with a screw on cap for pond draining, and the vertical run rising up to the desired water level in the pond? Then when the water in the pond rises above the desired level, water will flow out of the top of the pipe. Rip rap could be placed around the pipe so the water would fall down and splash off the rip rap.
Is there anything wrong with doing it this way?
I am wondering if a different scenario will work. What if the end of the pipe inside the pond still has a tee, with the horizontal run capped and the vertical run only rising a foot or so to keep it well above the mud? The other end that is on the outside of the pond also has a tee with the horizontal run capped with a screw on cap for pond draining, and the vertical run rising up to the desired water level in the pond? Then when the water in the pond rises above the desired level, water will flow out of the top of the pipe. Rip rap could be placed around the pipe so the water would fall down and splash off the rip rap.
Is there anything wrong with doing it this way?