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<br />
<br />.Water Supply, Reservoir Operation and Hydrologic Data
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<br />;;;i DEC197t
<br />;:; RECEiVED
<br />~ WATEf~ i~[SOURCES
<br />c:;. SiA1E. fN(.J1'~EER '
<br />(00" COLO. 1;
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<br />On Nov~er 1, 1970, the beginning of the compact year,
<br />2,692 acre-~ were stored in John Hartin Reservoir. Inflow
<br />during the winter storage period, November 1, 1970 to Harch 31,
<br />1971, amounted to 30,240 acre-f~ Outflow from the reservoir
<br />during same period amounted to 9,880 acre~~. Maximum storage
<br />occurred on March 30 and 31, 1971 and amounted to 35,154 acre-~
<br />~.
<br />
<br />Colorado made demands for riverflow during every month of
<br />the winter storage period except Januarv,lQ71.,From November 1,
<br />'to meer f1ifl1~ oelt"'llBnU.s 55
<br />1970, until December 24, 1970, releas~e made at rates up to 75_7
<br />100 cfs which amounted to a total of 1 acre- feE. in November,;$"
<br />ana ~ acre-fi:~ in December. 'On February 16, 1971 Colorado
<br />began demanding releases at rates up to 15 cfs which continued
<br />until February 20, 1971. The total amount of water re1eas~ l.1J'f,;/".
<br />during the period was @:'acre-f~. Demands for riverflo\'l were .
<br />again made by Colorado beginning on March 9, 1971 and continued 91'
<br />until April 1, whj,ch ~ resul.ted in releases of ~ acre-f~ I, '1 v
<br />._,:during March and ~acre feet during April. The total releases
<br />.. ..... .' ..\ of riverflow during @he~riod beginning November 1 and ending
<br />~-- April 1 amounted to , 49 acre-f~.
<br />. -%~8$ .
<br />'.' ")'16'~
<br />Both Colorado and Kansas '~rrigators placed calls for storage
<br />water on April 1, 1971. Releases were made near the maximum
<br />allowable rates until April 7, 1971, when the mandatory compact
<br />reduction occurred. On April 19, 1971, the reservoir was declared
<br />empty. The total demands during April were 21,914 acre-f6~for
<br />Colorado and 15,838 acre-~ for ~ansas. Colorado benefited
<br />.A.'. from small amo.unts of storage twice during August 1971 . . . ""'" .j._ .
<br />'f nlS ~ ~ .-i'7< _S. .. or, Nil'''''
<br />~ t al all\Gl:Rt of ',cater ',.'as' lilars ilie......::.. ans!s -, -
<br />: 1:;f'O"~""y ~ water during one period in August, an~l\ ~ fota wgs '" re 3'17
<br />
<br />: n~<f:J. f,.-~:~ ~o~l:~o~~~:~~\~:~~~,.~~r T::: ~:~ ::~:::.u;n~~~::~ '.
<br />
<br />~\.o#~ de,",a~Js te mF'A>0.,u.'
<br />~ During the compact year a tota~dP*~bl),500 acre feet crossed
<br />the Colorado-Kansas stateline, and ~ acre-~~ of the total
<br />crossed during the irrigation season. Diversions by ditches in
<br />Water District No. 67 in Colorad~7 were l49,688'acre-~'l!iit during
<br />the irrigation season and 19,429 acre-f~ during the winter stor-
<br />age period. Diversions in Kansas were 65,729acre.-f~~ during the
<br />irrigation season and lO,116'cicre_ftl-~ during the winter storage
<br />period.
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