Coleman Creek Project

The Coleman Creek project is nearly complete. The project included removing the existing concrete diversion dam and pump vault and replacing them with rock weirs for fish passage, a headgate above the upper weir, a fish screen, and a new pump vault. Work began the last week of October and is expected to be completed by early December.

This is the diversion structure during the '09 irrigation season. It was a barrier to fish passage and was unscreened.

The reach of the creek where the work occurred was dewatered and then a fish salvage occurred. Above are Ryan and Sara from the District and Jen Scott from WDFW with an electrofisher. They work for quite a while to remove all the fish under the existing diversion dam.

The first order of business was to remove the old diversion dam.

The rock weirs were constructed, beginning with the apex rock.

Below each rock weir, a scour pool was excavated.

The new pump vault was set in two pieces by a large crane.

The water was released back into the creek.

The remaining work includes finishing the gates, the fish screen installation and all the automation for the water measuring.

AL