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WATER LEVELS IN THE SOUTHERN HIGH PLAINS <br />DESIGNATED GROUND WATER BASIN - 1996 <br />The purpose of this report is to provide 1996 water level measurements from monitoring wells <br />in the Southern High Plains Designated Ground Water Basin. The project is ongoing, with the <br />cooperation of local well owners as well as the Southern High Plains Ground Water Management <br />District (SHPGWMD). Funding for the project is provided in part by utilizing revenues generated <br />by Senate Bill 200, passed during the 1987 legislative session. Well measurements of water <br />levels were conducted by the SHPGWMD under contract with and supervision by the Colorado <br />Division of Water Resources (DWR). Additionally, in 1996, exact locations of well structures <br />were obtained by utilizing GPS units (see Well Locations section). <br />In the 1996 measuring period, a total of 76 well sites were visited, including two measurements <br />from the Town of Springfield. Six wells were not measured because they were pumping. Nine <br />new wells were added to the network in the 1996 measurements (see 'Remarks'). Measure- <br />ments were made starting February 7, 1996, and were completed by February 13, 1996. <br />The aquifer designations used on the following hydrographs, data sheets and figures are as <br />shown in the following Table 1. <br />Table 1 - Aauifer Descriptions <br />limestones, and red to buff, <br />fine to coarse sandstone. <br />' Arithmetic average of monitored wells. ** estimated - no data available. <br />*< = slightly less than <br />*> = slightly greater than <br />Avg. Sat. <br />Total <br />Symbol <br />Name <br />Thickness' <br />Thickness <br />Description <br />To <br />Ogallala aquifer <br />* > 50 <br />0-200 ft. <br />Sand, gravel, silt, clay <br />and limestone. <br />Kd <br />Dakota aquifer <br />* c 75 <br />80-150 ft. <br />Fine grained, thin to <br />massive sandstone with <br />clayey to sandy shales, <br />light to dark brown. <br />Kc <br />Cheyenne aquifer <br />* c 100 <br />40-250 ft. <br />Fine grained, massive <br />light-colored sandstone. <br />TRd <br />Dockum aquifer <br />50 * (est'd) <br />0-570 ft. <br />Red siltstone, shales, <br />limestones, and red to buff, <br />fine to coarse sandstone. <br />' Arithmetic average of monitored wells. ** estimated - no data available. <br />*< = slightly less than <br />*> = slightly greater than <br />