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DakotaAquifer <br />1n 2003, water level data indicates five wells completed exclusively in the Dakota aquifer <br />experienced a decline ranging from -0.40 feet to -5.00 feet as compared to wells declining in <br />2002 from -0.20 to -0.40. Rises on wells completed in the Dakota Aquifer range from +0.20 feet <br />to +33.0 feet. <br />Cheyenne Aquifer <br />The area of greatest decline in water levels of wells penetrating exclusively the Cheyenne aquifer <br />was northeast of Two Buttes where a -6.60 feet decline was recorded in 2003 as compared to a <br />Cheyenne aquifer maximum decline of -1.40 feet in 2002 southeast of Springfield. The range of <br />decline of the Cheyenne aquifer for 2003 was -1.00 to -6.60 feet. The average 2003 decline <br />was -3032 feet as compared to -0.87 feet average decline in 2002. Rises of water levels of <br />Cheyenne aquifer wells range from +0.10' to +4.30'. In 2003, the average rise equaled +1.55 <br />feet, as compared to the average rise of +2.11 feet in 2002. <br />The Dockum aquifer declines range from -0.10 feet east of Stonington to -12.70 feet of decline <br />immediately northwest of Stonington (as compared with -17.60 feet decline north of Walsh in <br />2002). The arithmetic average of Dockum aquifer declines over the entire network was -3.51 <br />feet in 2003 as compared to -4.35 feet in 2002, and as compared to -4.20 in 2001. Seven <br />Dockum Aquifer wells experienced a rise averaging +8.51 feet in 2003 as compared to an <br />average rise of +1.20 feet in 2002. <br />Dakota,/Cheyenne A uifer <br />Water level changes in wells producing from a combined Dakota -Cheyenne aquifer range from a <br />+4.80 foot rise north and east of Walsh to a -4.80 foot decline east of Two Buttes. The average <br />water level change of Dakota/Cheyenne aquifer wells measured was +1.27 feet change in 2003 as <br />compared to +0.51 average change in 2002. <br />4 <br />