Sediment Removal Plan, Reeder Reservoir on Ashland Creek, Ashland, Oregon
Client: The City of Ashland
The sediment removal plan focused on the sediment pools located on both the east and west forks of Ashland Creek, immediately upstream from Reeder reservoir. The pools are full and the primary objective is to obtain a fill and removal permit that will allow the two sediment pools to be cleaned out to maintain the capacity of Reeder Reservoir which supplies drinking water to the City of Ashland. The permit phase of the project was commissioned by the Ashland Public Works Department and was completed in August of 2013. The implementation of the plan will take place in October of 2013. The joint fill and removal permit and associated sediment removal plan encompassed the following elements:
- Fish salvage plan for the east and west fork sediment pools. The work will involve blocking off the pools to isolate the work area from fish. Once the work area is isolated the pools will be drawn down and resident rainbow and cutthroat trout will be captured by electrofishing and netting and placed in a downstream pool. The fish salvage requires a scientific take permit from the Oregon Department of Fish and Wildlife.
- Erosion and clean water bypass plan to protect water quality while the sediment is being removed. The plan includes the construction of coffer dams and the use of pumps and geotube filters to maintain good water quality throughout the sediment removal process.
- Sediment disposal plan to transport the sediment (approx. 10,000 cubic yards) to an approved upland quarry disposal site. The plan includes erosion control at the site plus two settling ponds to contain turbid water.