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Water Levels in the Southern High Plains <br />Designated Ground Water Basin - 1998 <br />Dakota Aquifer <br />Page 4 <br />In 1998, water level data indicates five wells completed exclusively in the Dakota aquifer <br />experienced a decline ranging from -0.60 feet to -2.00 feet as compared to two wells declining <br />in 1997. Rises on wells completed in the Dakota Aquifer range from +0.05 feet to +3.50 feet. <br />Cheyenne Aquifer <br />The area of greatest decline in water levels of wells penetrating exclusively the Cheyenne aquifer <br />was east of Springfield where a -6.20 foot decline was recorded in 1998 as compared to a <br />Cheyenne aquifer rise of +5.50 feet in 1997. The range of decline of the Cheyenne aquifer for <br />1998 was -0.7 to -6.20 feet. The average 1998 decline was -2.00 feet as compared to -7.87 <br />feet average decline in 1997. Rises of water levels of Cheyenne aquifer wells range from +0.20 <br />to +3.60. In 1998, the average decline equalled -2.00 feet while the average rise equalled <br />+ 1.86 feet. <br />Dockum Aouifer <br />The Dockum aquifer declines range from -0.30 feet in southeast Baca County to -11.1 feet of <br />decline east of Stonington (as compared with -0.90 feet decline south of Stonington in 1997). <br />The arithmetic average of Dockum aquifer declines over the entire network was -3.22 feet in <br />1998 as compared to -0.51 feet in 1997 as compared to -3.08 in 1996. <br />Dakota/Cheyenne Aquifer <br />Water level changes in wells producing from a combined Dakota -Cheyenne aquifer range from <br />a +2.00 foot rise south of Springfield to a -7.90 foot decline north of Walsh. The average water <br />level change of Dakota/Cheyenne aquifer wells measured was -0.98 feet of decline as compared <br />to +0.89 feet rise in 1997. <br />4698R.cr <br />