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Glossary beginning with G

terms for which definitions are available

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Click one of the letters above to be taken to a page of all terms beginning with that letter.
GIS

Geographic Information Systems

grade

a slope, usually of a road, channel, or natural ground specified in percent

groundwater

water beneath the earth’s surface that supplies wells and springs and is often between saturated soil and rock

groundwater recharge

the replenishment of existing natural underground water supplies from rain or overland flow