Pond Boss Forums POND CONSTRUCTION Building a dam Thought on building dam on stream around pond

We built our pond on the side of a seasonal stream (stream flows around pond). We did this to avoid siltation. Our contractor graded the flow about 1-2 feet lower than I would have liked.

The stream is 2-3 feet wide and dries up about every 3rd year, but can really flow during snowmelt and heavy rains.

When the stream dries up, my thought is to build a concrete dam. It would have a flat base with sides that penetrate into the earth on both sides. Essentially a squared up U, 3 feet wide and 2.5 feet high. With in the concrete I would put a metal frame 2 inches wide and 2 inches deep.

This way I can use 2 x 6's to control the level of the stream, which will allow me to raise the level of the pond during the summer and let me lower it during the winter and spring run off events.

Any thoughts? Are there manufacturers that have something pre-fabed? Maybe of hollow plastic that I could fill with sand or concrete?

Thanks, Lavarock

they make a spillway pipe with wash boards, either plastic or aluminum. They are listed in the products section of PB

http://www.sepipe.net/aluminum%20flashboard%20riser.gif

You could simple concerete this in place

Thanks for the link. It looks a bit more elaborate than I am thinking. The unit shown is more for the actual pond outlet. This unit will be placed on the creek flowing around the pond (which is the same height as the retention pond / main pond). Hope this makes sense.

The max that I would want the unit to hold back is 2 feet of water x 3 feet wide.

A co-worker suggested a large steel plate with a cut out (similiar to shoring used on lake fronts). Then router out the boards and slide them into the cut out area.