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Matilija Reservoir has filled with sediment, allowing grasses to grow on its surface. | Photo: Paul Jenkin (August 2019)

The dam nobody wants just won’t go away

Dams can stop the natural flow of sand and silt to the sea—resulting in coastal wetland loss and disappearing beaches—as well as preventing fish from reaching vital spawning grounds.

Many U.S. reservoirs could be rendered useless by sedimentation

There's a looming infrastructure crisis: America’s reservoirs are filling up with sediment.

Some Western cities offer residents “cash for grass” to reduce irrigation

A study in 2016 showed that lawns are the largest irrigated crop in America.