Dorena Dam is located on the Row River, a tributary of the Willamette River, about six miles east of Cottage Grove, Ore.
Dorena Dam is an an earthfill structure with a concrete spillway, completed in 1949 at a cost of $14 million and since has prevented more than $3.4 billion in potential flood damages, and controls runoff from 265 square miles of drainage area. Dorena works in coordination with Cottage Grove Dam to provide flood risk management, water quality improvement, irrigation, recreation, and habitat for fish and wildlife.
The U.S. Army Corps of Engineers implemented an alcohol ban at Dorena and Cottage Grove lakes.
Notice: Dorena Hydro is constructing a powerhouse at Dorena Dam. The noisiest phase of the project has been completed, but there may be construction noise (mainly heavy equipment movement and carpentry activity) in the future. The company and its contractor cannot fully predict the exact days and hours when work will take place, as these are subject to accessibility of work areas, type of work and availability of materials. For more information, please contact Dorena Hydro's on-site representative at 206-715-4541.
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