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Chute spillway of Llyn Brianne dam in Wales. A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure that water does not damage parts of the structure not ...
Many pathways of water can enter through a dam structure to produce a well-defined nappe. However, engineers classify dams as either overflow dams, where water consistently flows over or is blocked through a gate on top of crest, or non-overflow dams, which channel water through or around the dam with emergency floodgates.
An emergency spillway with fuse plug (bottom) and an auxiliary ogee spillway (top) at New Waddell Dam. A fuse plug is a collapsible dam installed on spillways in dams to increase the dam's capacity. The principle behind the fuse plug is that the majority of water that overflows a dam's spillway can be safely dammed except in high flood conditions.
When the lake's water levels rose, it began to overflow at the top of the pipe connecting to the river, which spans 8-foot-wide and 200-foot-long, and ran at a rate of 48,400 cubic feet of water ...
A week of rain brought as much precipitation as the region normally sees in an entire summer. Then the water came for Jenny Barnes' family business.
Open channel spillways are dam spillways that utilize the principles of open-channel flow to convey impounded water in order to prevent dam failure. They can function as principal spillways, emergency spillways, or both. They can be located on the dam itself or on a natural grade in the vicinity of the dam.
A tailings dam belonging to copper miner Las Cenizas in central Chile began overflowing overnight on June 13 due to heavy rains and put nearby water sources, including the La Ligua river at risk ...
Valves used in floodgate applications have a variety of design requirements and are usually located at the base of dams. Often, the most important requirement (besides regulating flow) is energy dissipation. Since water is very heavy, it exits the base of a dam with the enormous force of water pushing from above.