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Water Levels in the Southern High Plains Page 2 <br />Designated Ground Water Basin - 1996 <br />A review of the 1996 measurements as compared to the 1995 measurements reveals that the <br />following water level changes have occurred since the last measurement period (1995-96): <br />water level declines = 37 wells as compared with 42 between 1994 and 1995 <br />water level rises = 22 wells as compared with 24 in the 1994-95 report <br />no measured change in water level = 6 wells as compared to 10 in 1994-95 period <br />The reader will note that where water level is zero with no additional data entry, that no water <br />level measurement was taken during those subsequent measurement periods. <br />The average decline of water level within the network was 2.95 feet for 1996 as compared to <br />3.67 feet for 1995 and 3.31 for 1994. <br />The average rise in water level was 1.10 feet for 1996 as compared to 2.19 feet in 1995 and <br />2.28 in 1996. <br />A map depicting the location of monitoring wells, as well as individual well data and selected <br />well hydrographs, has been modified by GPS information and replacement well information and <br />follows this text. Additionally, a listing entitled "Well Locations" lists the GPS results for all well <br />sites visited in 1996. <br />Ogallala Aquifer <br />The Ogallala aquifer experienced a range of declines of -0.40 to -21.10 feet, with a maximum <br />decline of -3.18, as noted below. One well experienced a small rise in water level. The average <br />decline was -1.84 feet as compared to -1.48 feet of decline in 1995. The area of greater decline <br />of water table in the Ogallala aquifer again in 1996, as it was in 1995 and 1994, is northeastern <br />Baca and southeastern Prowers counties. <br />Dakota Aquifer <br />In 1996, water level data indicates northeastern Baca and Southeastern Prowers counties' areas <br />with the greatest decline in water levels, approximately 4 to 5 feet. Again, in 1995, the greatest <br />decline in water level in the Dakota aquifer is in the area near Blaine. The 1996 arithmetic <br />average of decline is -2.84 feet, as compared to an average decline of -6.04 feet in 1994. The <br />range of decline of the Dakota aquifer was from -0.10 feet to -11.3 feet. <br />Cheyenne Aauifer <br />The area of greatest decline in water levels of wells penetrating the Cheyenne aquifer only was <br />west of Bartlett where a -10.7 foot decline was recorded in 1996. The range of decline of the <br />Cheyenne aquifer for 1996 was -0.10 to -10.70 feet. The average decline was -2.47 feet as <br />compared to -4.84 feet in 1995. <br />Dockum Aquifer <br />The Dockum aquifer declines range from -0.10 feet in southwest Baca County to -8.0 feet of <br />decline southeast of Stonington. The arithmetic average of Dockum aquifer declines over the <br />entire network was -3.08 feet in 1996 as compared to -4.57 feet in 1995. <br />