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<br />GLOSSARY <br /> <br />Water-use terms are defined in the GLOSSARY and are italicized when <br />first used in this report. <br /> <br /> <br />acre-foot.--The volume of water <br />square feet) to a depth of <br />thousands of acre-feet per <br /> <br />required <br />I foot. <br />year. <br /> <br />to cover 1 acre of land (43,560 <br />A common unit of water use is <br /> <br />commercial water use.--Water used by hotels, motels, office buildings, <br />restaurants, other commercial facilities, and civilian and military <br />institutions. <br /> <br />consumptive use.--Water that is no longer available because it has been <br />evaporated, transpired, incorporated into products or crops, consumed by <br />humans or livestock, or otherwise removed from the water environment. It <br />is also referred to as water consumption, water consumed, and water <br />depletions. <br /> <br />convegance loss.--Water that is lost in transit between point of withdrawal <br />and point of use. <br /> <br />countg cataloging unit.--The part of a drainage area that is common to a <br />hydrologic cataloging unit and a county (fig. 2); the geographic unit <br />for which water-use data were collected for this study. <br /> <br />deliverg.--Water supplied to a user by a public-supply system. <br /> <br />domestic water use.--Water used for inside household purposes, such as <br />bathing, drinking, flushing toilets, food preparation, washing clothes <br />and dishes, and for outside household purposes, such as washing cars <br />and watering lawns and gardens. It is also called residential water use. <br /> <br />evaporation.--Process by which water is changed from the liquid or solid state <br />to the vapor state. <br /> <br />ground water.--Generally, all subsurface water, as distinct from surface <br />water; specifically, that part of the subsurface water in the saturated <br />zone. <br /> <br />hgdroelectric power water use.--Water used to drive turbines for generating <br />electric power. <br /> <br />hgdrologic cataloging unit.--A geographic area that has boundaries defined by <br />the u.S. Geological Survey and Water Resources Council (U.S. Geological <br />Survey, 1982) and that consists of one or more stream drainage areas. A <br />cataloging unit is the smallest class of these defined areas; there are <br />94 cataloging units in Colorado (see fig. 2). <br /> <br />vii <br />