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This report contains the basic ground water fe�el data collected in the Upper Big <br />Sandy Designated Ground Water Basin during the period from February 1991 <br />through February 24�0. Acquisition and publ�cation ot this infarmation is a <br />cooperative effort befirveen the Upper Big Sandy Ground Water Management <br />District and the Colorado Division of Water Resvurces. The project is part of a <br />statewide ground water le�el monitoring �rogram funded by Senate Bil! 200 (1987 <br />legislati�e session}. This legislation directed ihat a portion of the fees colfected for <br />water weli permits shall be used for the establishment of a program to monitor <br />water levei trends throughout the state. <br />The wells in this report are listed by township, range, and section, beginning at the <br />north end of the basin and proceeding south. The division is in the process of <br />verifying the Iocation of all of the wells measured with a satellite based global <br />positioning system (GPS}, That location information in UTM grid format has been <br />inc�uded where availabfe. All wells in the next year's report will show locations by <br />IJTM grid coordinates. <br />Included in the report are water Ie��E measurements and hydrographs of 24 wells <br />monitored on a regular basis. Mr. Glenn Graham of this office took water le�el <br />measurements in these wells during February 1999. Additional we11s in the town of <br />Ramah and in the town of Limon's Christopher Well Filed will also be added to next <br />year's report. <br />23 wells were measured for this year's report; 1 well was pumping and was not <br />measured. �nly one of these we�ls showed a water levei decline of 0.97 of a foot <br />from last year. The remaining 22 wells measured showed increases in water le�els <br />from fast year ranging from 0.03 of a foot to 3.32 feet. The a�erage change in <br />water level fvr the 23 wells measured was an increase of 1.5'l feet. Water le�els in <br />22 of the 24 wells are currently higher than they we�e when monitoring began in <br />the Upper Big Sandy Management District in 1991. The overall trend from 1991 to <br />20�0 shows an average increase of 2.52 feet, or apprvximately 0.28 of a foot per <br />year. Although fall and winter of 1998 was relativeiy dry, a wetter than normal <br />summer of 1997 and the heavy snow fall in Octvber � 99? coupled with hea�y rains <br />in the {ate summer of 199g have resulted �n the o�erall rise in water ie�els since <br />�991. <br />The information in this report was compiled, edited, and prepared for pubiication by <br />Gkenn Graham. <br />Copies of this report are made avaifabfe to well owners and the District tree of <br />charge. Addi#ional copies may be ob#ained from the Colorado Division of Water <br />Resources, Public Records Section for $1.5D each. The Records Section can be <br />contacted at 1313 Sherman Street, Room 8'� 8, Den�er C� $0203, or by phone at <br />343/86fi-3581 or 303I86S-3447. <br />