|
<br />STORAGE, GROUND-WATER - Water which occurs as
<br />ground water in the zone of saluration, including that part en.
<br />tering and lea\'ing s_to~age.
<br />
<br />TABLE, \V A TER, NATURAL - A water table in its natural
<br />condition and posilion, not disturbed by artificial additions or ex-
<br />tractions of water.
<br />
<br />WATER, GROUND (1) Subsurface water oc.cupying the
<br />saturation zone, from which wells and s'prings are fed, In a
<br />strict sense the tenn applies only to water bt!low the water table.
<br />Also called plerotic wateT; phreatic water.
<br />
<br />WATER. GROUND. CONFINED - A body of grouod-wa.e,
<br />overlain by material sufficiently impervious to sever free hy-
<br />draulic connection with overlying ground water except at the
<br />intake. Confined ground water moves under the pressure due to
<br />difference in head between intake and discharge areas of the
<br />confined water body and is under sufficienr pressure to rise
<br />abo\'e the bottom of the confining bed, if given an opponunity
<br />to do so,
<br />
<br />WATER. GROUND, RECHARGE - W"', descending to .he
<br />zone of saluration. Natural recharge is that portion of water
<br />from the almosphere which gravitates to the zone of saturation
<br />under natural conditions. Artificial recharge is that water which
<br />is added to the zone of saturation lhrough the activities of man,
<br />such as spreading basins, wells, inigation, and induced infiltra-
<br />tion from streams. Also called recharge; grourfd-wa!eT intak.e;
<br />ground-u.'ater increment.
<br />
<br />YIELD. GROUND-WATER, ECONOMIC - The maximum
<br />rate at which water can be artificially withdrawn from an
<br />aquifer throughout the foreseeable fUlure wilhout depleting the
<br />supply or altering lhe chemical character of the water to such
<br />an extent that withdrawal at this rate is no longer economically
<br />possible. The economic yield varies with economic conditions
<br />and other factors such as recharge, natural discharge, pumping
<br />head, elc. The lenn may be arplied wilh respect to the eco.
<br />nomic feasibility of withdrawa from the standpoint only of
<br />those who artificially withdraw water or from the standpoint of
<br />the economy of a river valley or other larger area 10 whi~h Ihe
<br />aquifer contributes water.
<br />YIELD, SAFE - The maximum dependable draft which can
<br />be made continuously upon a source of water supply (surface or
<br />ground water) durins a period of years during whicb the pro'
<br />bable driest period or period of greatest deficiency in water
<br />supply is likely 10 occur. Dependability is relative and is a
<br />funclion of storage provided and drought probability.
<br />
<br />Other Brochures in the Southeastern Colorado
<br />Water Conservancy District series describe the Frying.
<br />pan-Arkansas Project; Water Conservancy District
<br />Statutes under the laws of the State of Colorado;
<br />Operating Principles of the Southeastern Colorado
<br />Water Conservancy District; Contract between the
<br />Oi!.trict and the United State!. Governmen' for repay-
<br />ment of the reimbursable portion of the Fryingpan.
<br />Arkansas Project; a Glossary of Water Terms; and a
<br />Tabulation of Decrees on the Arkansas River, in
<br />Colorado. Copies of these are available at no cost, by
<br />writing to the Southeastern Colorado Water Conser-
<br />vancy District, P. O. Box 440, Pueblo, Colorado,
<br />81002.
<br />
<br />16
<br />
<br />.,,-, '.-,:
<br />
<br />.J,:"':_
<br />, .:
<br />:.}',,>,.
<br />
<br />--:.
<br />
<br />......:...
<br />
<br />......:
<br />....
<br />
<br />..::....
<br />
<br />"
<br />
<br />:".'
<br />
<br />_.....
<br />
<br />"
<br />
<br />,..:
<br />
<br />"
<br />;..
<br />
<br />.". .'.,
<br />
<br />,-
<br />
<br />.'''''.
<br />
<br />'::)
<br />.~
<br />N
<br />.'::)
<br />'J
<br />~
<br />
<br />'. J~(."':"~'
<br />
<br />. .::.:...~::-:..'~ :-"":;::: .-
<br />
<br />.', '.
<br />
<br />: ~
<br />
<br />..,. .~.
<br />
<br />~...,.
<br />
<br />". .. .
<br />'::;~':.:" ".:->:
<br />::::;,:->::~"
<br />
<br />"
<br />
<br />r~?;i
<br />~:~-,.'" I
<br />I. '.:.::
<br />,,,
<br />"', /:
<br />
<br />,....
<br />
<br />~_.' ,.".::
<br />~'~'....~~.
<br />
<br />.....,'.'
<br />
<br />_C
<br />
<br />. . '. ~.r
<br />
<br />;:
<br />
<br />; ...
<br />
<br />~:'~'~;:.'::
<br />.....:;......
<br />
<br />,
<br />, .
<br />"
<br />
<br />;'
<br />
<br />~ .
<br />
<br />;::.':::,,:.:
<br />
<br />..:;;,.,,\~;::
<br />::~.> ...
<br />'>:'.>'::~: I
<br />
<br />I
<br />
<br />.,.' '.
<br />
|