Water & Dams

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A call for total replacement of the main spillway at a new location.

OMB director says funds cut from some programs will go into expected infrastructure investment program later this year.

President Trump has directed the Environmental Protection Agency and the Army Corps of Engineers to begin work on cancelling or rewriting an Obama administration rule that aimed to clarify federal authority over wetlands and other bodies of water.

Long before Donald Trump promised to “drain the swamp” in Washington, the U.S. Environmental Protection Agency issued a set of very detailed directions for ending the persistent flooding of the District of the Columbia’s 61-square-mile watershed from the city’s combined-sewer overflow system.

A trio of spillway failures at the 770-ft-tall earthfill Oroville Dam that prompted the evacuation of more than 188,000 people from central California has renewed questions about the reliability of hundreds of dams in the state and more nationally.

In the early morning hours of Feb. 9, heavy rainfall and a high tide combined to knock off line Seattle’s 52-year-old West Point wastewater treatment plant.

Situated in narrow valleys, arch dams are not as common as other types of dams, such as embankment dams and gravity dams.