Dexter Dam is located at river mile 18 on the Middle Fork of the Willamette River, about 22 miles southeast of Eugene, Ore.
Dexter Dam is an earth and gravel-fill embankment dam with concrete gated spillways. It was completed with Lookout Point Dam in 1954 at a cost of $88.2 million. Since then, it has helped prevent more than $5.3 billion in potential flood damages. Dexter Dam is located three miles downstream of Lookout Point Dam, and is used to regulate power-generating water releases from there.
Dexter Dam impounds a small reservoir, 27,500 acre-feet of water at full pool, and has one generator capable of producing 15 megawatts. Dexter's authorized primary purposes are flood risk management, hydropower, water quality improvement, irrigation, fish and wildlife habitat and recreation.