take some pictures of the Grand Coulee but I keep forgetting how to post pictures on here even though Al keeps telling me how.
As to the fame of Hoover Dam, I believe it was the largest dam in the US until the late 1940's. Hoover is taller than Grand Coulee, but not nearly as wide. Also, Hoover is not all that far from Las Vegas and is visited by a lot of tourists. Grand Coulee on the other hand, is in hte middle of nowhere in eastern Washington state. It is a desolate area not highly visited by tourists, except people like me who wish to avoid crowds.
Not far from Grand Coulee are the Dry Falls which were formed during some recent Ice Age when a giant lake about the size of Montana drained in about one day becaue the ice dam broke. The Dry Falls are much higher than Niagara Falls and are about 3 miles wide. Very impressive to see. The "coulees" are channels dug into the dirt and rock by the water during that episode. Grand Coulee is the largest of the coulees.