Laserfiche WebLink
<br />0024~13 <br /> <br />Bank storage: Water that has infiltrated from a reservoir into the surrounding land where <br />it remains in storage until water level in the reservoir is lowered. I --- <br /> <br />Beaching: The action of water waves by which beach materials settle into the water <br />because of removal of finer materials. <br /> <br />Benchmark: A permanent or temporary monument of known elevation above sea level, <br />used for vertical control at construction site. <br /> <br />Berm: A horizontal strip or shelf built into an embankment or cut to break the continuity <br />of the slope, usually for the purpose of reducing erosion or to increase the thickness of <br />the embankment at a point of change in slope or defined water surface elevation. Usually <br />10 to 15 ft in width. <br /> <br />Bridge, class A: A bridge located on a Federal-aid highway. Examination of this type of <br />bridge is required every 2 years with an in-depth examination every 6 years. <br /> <br />Bridge, class B: A bridge not located on a Federal-aid highway that is used by the <br />public. Examination of this type of bridge is required every 3 years. <br /> <br />Bridge, class C: A bridge not located on a Federal-aid highway that can be designated as <br />being a private or operating bridge and could be gated or closed to the public, if desired. <br /> <br />Bulkhead: A one-piece fabricated steel unit which is lowered into guides and seals <br />against a frame to close a water passage in a dam, conduit, spillway, etc. <br /> <br />......y <br /> <br />c <br /> <br />Camber: The extra height added to the crest of embankment dams to ensure that the <br />freeboard will not be diminished by foundation settlement or embankment consolidation. <br />The amount of camber is different for each dam and is dependent on the amount of <br />foundation settlement and embankment expected to occur. <br /> <br />Canal: A channel, usually open, that conveys water by gravity to farms, municipalities, <br />etc. <br /> <br />Canal prism: The shape of the canal as seen in cross section. <br /> <br />Cavitation: The formation of partial vacuums in fast-flowing water caused by <br />subatmospheric pressures immediately downstream from an obstruction or offset. Usually <br />accompanied by noise and vibration. <br /> <br />Cavitation damage: The attack on surfaces caused by the implosion of bubbles of water <br />vapor. <br /> <br />Check structure: A structure used to regulate the upstream water surface and control the <br />downstream flow in a canal. <br />