Interpretive Display
Wanapum: Columbia River, WA
Wanapum Dam is located on the Columbia River, six miles downstream of Vantage, 18 miles upstream of Priest Rapids Dam and 415 miles above the mouth of the river.
Mayfield: Cowlitz River, WA
Located 65 miles south of Tacoma, Washington, Mayfield Dam is part of the two-dam Cowlitz Hydroelectric Project. Construction began in 1955 and power generation began in 1963.
Rocky Reach: Columbia River, WA
The Rocky Reach Project is located in mid-Washington state on the Columbia River, about seven miles upstream from the city of Wenatchee. By river, the dam is 215 miles below the Canadian border and 473 miles above the…