Definition of spillway
: a passage for surplus water to run over or around an obstruction (such as a dam)
Recent Examples of spillway from the Web
All day Saturday, enjoy a rich mix of paddle sports races and activities that launch from the spillway beach at Laurel River Lake.
An emergency spillway was added when DuPage County took ownership of the structure in 1998.
Officials from various agencies have worked together in recent years to complete water quality projects, such as the river re-meander north of the dam and the removal of small spillway dams north of Warrenville Road and at Churchill Woods.
Many of the spillways the state is singling out for closer evaluations by dam owners are even older than Oroville’s, including some dating back to California’s 19th-century Gold Rush, Meyersohn said.
Authorities ordered the evacuation of nearly 200,000 people below the dam on Feb. 12 with an hour’s notice, fearing the disintegration of the spillways and the hillside around them could lead to massive, uncontrolled releases of water.
The leader of the independent forensics team studying the Oroville crisis said Thursday that the crack in the dam’s main flood-control spillway likely was caused by a combination of problems.
When water first crested the spillway of the Grand Coulee Dam, cascading down its face before a crowd of 10,000 people on June 1, 1942, there was no shortage of hyperbole on the achievement.
The national Association of State Dam Safety Officials and the United States Society on Dams created the independent panel to try to identify the operational and physical failures that made the two spillways at Oroville Dam give way.
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