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<br />llUO!tf1!i <br /> <br />\..'ATER-LEVEL RECORDS rDR ADA.'IS, LARIMER, LOGA.-':, ~ORGA.~. <br /> <br />SEDGWICK. WASHINGTON, A.~D \..'ELD COUNTIES. COLORADO. 1973-77 <br /> <br />By Thomas J. ~jor and Kenneth D. Vaught <br /> <br />ABSTRACT <br /> <br />Water levels measured during March 1977 in 150 wells tapping .:illuvial <br />aquifers in Adams. Larimer, Logan. :-torgan. Sedgwick, I,..ashington. and ....:eld <br />Counties. Cnlo.. are included in this report. W,ltE'r-level rc-cords for the 4 <br />preceding years also are included to serve as references i llustri'lting <br />dcclinin~ or rising water levels. <br /> <br />Water-level measurements madt.' in <br />precipitation deficiencies of the winter <br /> <br />~arch 1977 <br />Qf 1976-77. <br /> <br />do <br /> <br />not <br /> <br />reflect <br /> <br />the <br /> <br />I~TRODUCTIO:-O <br /> <br />This report provides well owners and water managers with '...rater-level <br />measurements made during Xarch 1977 prior to the irrigation season in Adams, <br />Larimer, Logan, Morgan, Sedgwick, Washington. and \.Jeld Counties, Colo. <br />(fig. 1). These data, arranged in county order (table I. at back of report). <br />can be used by well owners for planning their irrigation schedules for th€:' <br />next irriRation seasoll and can be used by water managers for developing plans <br />to milllaRe the ground-",'atcr resources, i.'ilter-level records for the 4 preceding <br />years also ,Ire included to serve as references illustrating declining or <br />rlslllg water levels. <br /> <br />W.'lter-level records for Adams. Llrlmer, Logan. ~organ, Sedgwick. <br />\o.'ashlngton, and Weld Counties, Colo.. <lrc a part of the ~ational Water-Data <br />System collectcd ,.nd tabulated by the U.S. Geological Survey in cooperation <br />with the Colorado Department of ;.latural Resources, Division of \oiater <br />Resources, Office of the State En~ineer. <br /> <br />Water-level measurements ....er~ made in 350 ....ells tapping the alluvial <br />aquifer along the South Platte River and its tributaries. The aquifers are in <br />val1~y-iill alluvium ~long the rivers or in adjacent terrace alluvium. ~ost <br />of these \olt.:lls a.re lrrL~atlon \,;ells. but several stock and government-o....ned <br />wells also ....ere measured, especially in areas ...'here there are no irrigation <br />w~lls .wailable for monitoring water levels and water-level changes. The <br />IZ,-!oOO-mi2 (32,IOO-km~') study area includes all of Adams, I.oga~, ~()rgan, <br />