The dam is 473 miles ( 761 km ) above the mouth of the Columbia .
The project is on the Columbia River in north central Washington state about seven miles ( 11 km ) upstream from the city of Wenatchee .
The dam is 473 miles ( 761 km ) above the mouth of the Columbia River .
The project is on the Columbia River in north central Washington state about seven miles ( 11 km ) upstream from the city of Wenatchee .