Grand Coulee

For other uses, see Grand Coulee (disambiguation).
Grand Coulee
Grand Coulee, below Dry Falls. The layering effect of periodic basalt lava flows is visible.
Map showing the location of Grand Coulee
Map showing the location of Grand Coulee
Map of Washington state
LocationWashington state
Coordinates47°37′12″N 119°18′27″W / 47.62°N 119.3075°W / 47.62; -119.3075
Designated1965
Looking northward in Grand Coulee.
Steamboat Rock in the Grand Coulee.
Part of the Grand Coulee has been dammed and filled with water as part of the Columbia Basin Project.

Grand Coulee is an ancient river bed in the U.S. state of Washington. This National Natural Landmark[1] stretches for about 60 miles (100 km) southwest from Grand Coulee Dam to Soap Lake, being bisected by Dry Falls into the Upper and Lower Grand Coulee.

  1. ^ "Grand Coulee". nps.gov. National Park Service. Archived from the original on 2013-03-08. Retrieved 2013-03-31.