Harriet Lake

About Harriet Lake

The primary purpose of Harriet Lake is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Portland General Electric Company (private). It impounds the Oak Grove River near Estacada, Or.

The dam stands 68 feet tall and stretches 186 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 400 acre-feet, and collects water from a drainage area of 131 square miles. Completed in 1923, the structure is over a century old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/20/2022.

At 68 feet, this dam is taller than 96% of all dams in the United States.

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