More than a mile long, the Grand Coulee Dam is the largest concrete structure in the U.S. In the fall of 2011, dam operators agreed to open the spillway just for American Experience. "It was very ...

Boulder Dam on the Colorado River is the world’s biggest dam, but the Grand Coulee project on the Columbia River will be much bigger. This mighty barrier in the wild heart of Washington ...

You've decided that the electric power this dam provides is more important than the population of salmon in the river. You're not alone. Large dams all over the world, like the Grand Coulee Dam in ...