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<br />. <br /> <br />. <br /> <br />. <br /> <br />5434 <br /> <br />GLOSSARY OF TERMS <br /> <br />Acre-foot - The quantity of water (43,560 cubic feet) that would <br />cover 1 acre to a depth of 1 foot. <br /> <br />Aesthetic - Of or in relation to beauty, pleasing to the eye. <br /> <br />Aggregate - The sand or gravel added to cement in Making concrete <br />or mortar. <br /> <br />Air chambers - A tank type structure, which is closed to the <br />atmosphere, constructed on a waterline to control and suppress <br />transient pressures (water hammer). <br /> <br />Air valve - A structure located at high points of a pipeline which <br />releases trapped air. <br /> <br />Alluvium - A deposit, as of sand or mud transported and laid down <br />by flowing water in river beds, flood plains, lakes, etc. <br /> <br />Anticline - A system of roughly parallel folds in stratified rock <br />in which the folds slope downward from a crest in opposite <br />directions. <br /> <br />Aquifer - An underground layer of porous rock, sand, etc., containing <br />water. <br /> <br />Arborescent - Treelike in shape or growth. <br /> <br />Arkosic sediments - A sandstone derived from the rapid disintegration <br />of granite or gneiss and characterized by feldspar fragments. <br /> <br />Avifauna - Bird s~E:!c~~~. <br /> <br />Benthos - Organisms living in or on the bottom of a lake, oond, <br />oceant etc. <br /> <br />Blowoff - A structure located at low points of a pipeline used to <br />remove water from the line for repair and maintenance. <br /> <br />Deciduous - Shedding leaves annually. <br /> <br />Disturbance species - Species that occur in disturbed areas, ~.e., <br />transmission ~ine corridors where vegetation has been cleared. <br />