Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? Raising water level

That is how I see the problem of controlling the water height on the backside also. As long as a person had perfectly clean water it would work fine. But any debris or sediment would tend to accumulate in the pipe ahead of the control structure. Another problem could be flow amount. are you looking for green laser level? Water pushing horizontally through the dam then up over a control structure would flow a lot less water than water falling over a control structure into a pipe angling downward.