Grand Coulee, Washington (Wikipedia)Grand Coulee is a city in Grant County, Washington, United States. The population was 972 at the 2020 census.
Wikivoyage
Grand Coulee (en.wikivoyage.org)Grand Coulee is a city in the Columbia River Plateau of Washington State. It is on the shore of Lake Roosevelt just above the Grand Coulee Dam, the largest hydroelectric power producer in the United States.