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The Kinzua Dam in Pennsylvania, with outlet works releasing water. A gatehouse, gate house, outlet works or valve house for a dam is a structure housing sluice gates, valves, or pumps (in which case it is more accurately called a pumping station). Many gatehouses are strictly utilitarian, but especially in the nineteenth century, some were very ...
Originally constructed as part of the City's Croton Watershed system, Boyds Corner today serves mainly as part of the Catskill/Delaware water supply system. [6] The Boyds Corner watershed drainage basin is 22 square miles (57 km 2) long and a mere 1.5 miles (2.4 km) wide, and includes the headwaters of the West Branch of the Croton River.
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 ...
Geosynthetic clay liners (GCLs) are factory manufactured hydraulic barriers consisting of a layer of bentonite or other very low-permeability material supported by geotextiles and/or geomembranes, mechanically held together by needling, stitching, or chemical adhesives. Due to environmental laws, any seepage from landfills must be collected and ...
In addition to flying and ordinary buttresses, brick and masonry buttresses that support wall corners can be classified according to their ground plan. A clasping or clamped buttress has an L-shaped ground plan surrounding the corner, an angled buttress has two buttresses meeting at the corner, a setback buttress is similar to an angled buttress but the buttresses are set back from the corner ...
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