Science is Fun Fridays!

 

The Grand Coulee Dam on the Columbia River.

It is the largest hydropower producer in the United States, generating enough electricity to power much of the Pacific Northwest.

It is a gravity dam, which resists the force of water pushing against it through sheer mass.  The weight of the dam, acting downwards, counteracts the horizontal force of water.

The dam creates a reservoir on the river, named Lake Roosevelt, for FDR was president during construction.

From May through September, a laser show is projected onto the dam, called "One River, Many Voices."  It started in 1989 and is one of the largest light shows in the US.



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