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to a decline of -7.5 feet. Overall, the average change for the past finro year period was a decline of <br />-3.84 feet or an �nnuaiized change of -1.91 feet. In the past iwo years�thirteen wells showed a--- <br />decline in wate� �vels, and one well showed an increase. There was no comparable data from <br />three wells in 2� �. <br />Dakota Aauifer <br />A total of thirty-three wells into the Dakota aquifer were measured in 200fi. Water levels <br />fluctuated over the past two years r from a rise of �.7 feet to a decline of -10.7 feet. �verall, <br />the a�erage change for the pas finr r period was a deckine of -4.90 feet or an annualized <br />cha�ge of -2.45 feet. In the past o years�twenty-four wells showed a decline in water le�els, <br />and three wells showed an increase. There was no comparable data from four wefls in 2QD4. <br />Che enne uifer <br />Eleven wells into the Ch�yenne aquifer were measured in 20�fi. Water levels fluctuated <br />o�er the past twa years rangin f m a rise of 2.25 feet to a decline of -6.10 feet. ��erall, the <br />a�erage change for the pas r period was a decline of -2.14 feet or an annualized change <br />of -1.07 feet. In the past two years� eight wells showed a de�line in water levels, and two wells <br />showed an increase. There was no comparable data from one well in 2004. <br />Dockum Aqui_ fer <br />Twenty-one wells penetrating the Dockum aquifer were measured in 2006. Water le�els <br />fluctuated over the past two years ranging from rise of 3.00 feet to a decline of -11.fi� feet. <br />O�erall, the a�erage change for the past o-ye period was a decline of -5.84 feet or an <br />annualized change of -2.92 feet. In the pas o years�nineteen wells showed a decline in water <br />levels, one well shvwed no change and one well shawed an increase. There was no comparable <br />data from one well in 2�04. <br />Dakota - Chevenne AQuifer <br />A total of five wells classified as Dako#a-Cheyenne aquifer were measured in 200fi. Wa#er <br />le�els fluctuated o�er the past two years ranging fr a decline of D.9D feet to a decline of -8.20 <br />feet. �verall, the a�erage change for the pas� o r period was a decline of -4.fi� feet or an <br />annualized change of -2.30 feet. In the past two yearsjfour wells showed a decline in water levels. <br />There was no comparable data from one well in 2004. <br />� <br />� <br />� <br />� <br />� <br />Table 2 on the #ollowing age summarizes the water le�el changes in the basin and in the <br />various aquifers for the past ar period and for the past 5-year and 14-year periods. --. <br />Copies of the report can be purchased from the �ffice of the State Engineer, Records <br />Section, 13't 3 Sherman St., Room 821, Den�er, CO 802�3, (303) 86fi-3447. Additionally, this <br />data may be accessed on the intemet at the Colorado Decision Support 5ystem website <br />httv:llcdss.state.co.us and can be exported to a number of different formats. <br />