Gatehouse (waterworks)
A gatehouse, gate house, outlet works or valve house for a
). Many gatehouses are strictly utilitarian, but especially in the nineteenth century, some were very elaborate.Background
A set of outlet works is a device used to release and regulate water flow from a
power plant or diversion capacity of the dam, but is not high enough to warrant use of the dam spillways. They may also be used when river flows must be bypassed due to maintenance work in the power station or diversion gates. Although similar in purpose to spillways, outlet works provide a more controlled release to meet downstream flow requirements.[1]
A typical set of outlet works begins in an intake structure, which is usually a canal or intake tower. A regulating gate or valve controls water flow into the pipes of the outlet works, which discharge downstream into a stilling basin or directly into the river.[2] The inlets of the outlet works may consist of either gates or valves, or be composed of a more primitive system of stoplogs. Inlets may also contain a series of other devices for different purposes, including trash racks and fish screens.[1]
See also
- Category:Gatehouses (waterworks) – listing notable examples
References
- ^ a b "Outlet Works" (PDF). Retrieved 2009-04-28. [dead link]
- ^ "Glossary of Terms". Bureau of Reclamation. Archived from the original on 2007-12-25. Retrieved 2009-04-28.
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