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WATER LEVELS IN THE SOUTHERN HIGH PLAINS <br />DESIGNATED GROUND WATER BASIN —2001 <br />This report of the 2001 water levels in the Southern High Plains Designated Ground Water <br />Basin is the 12th of a series of annual reports. The measurements were accomplished <br />primarily in early March, 2001 by experienced personnel of the Southern High Plains Ground <br />Water Management District (SHPGWMD). <br />The well locations, where identified by the Public Land Survey System (Township, Range <br />and Section), were obtained from well permit information primarily. Location information <br />given in terms of the Universal Transverse Mercator (UTM) system was obtained by a GPS <br />(Global Positioning System) survey conducted by SHPGWMD personnel. All well locations <br />reported by GPS survey were assessed utilizing an "averaging" technique. The averaging <br />technique, as well as the lack of Selective Availability (SA -the intentional jamming of GPS <br />signal terminated in May of 2000) provided GPS surveyed locations more accurate than <br />previous estimates. GPS locations still need to be topographic map verified. The GPS <br />survey locating of wells will be a continuing operation concurrent with water level <br />measurement. <br />A total of 18 additional wells were added to the monitoring network this report year in order to <br />provide better coverage within the basin. The choice of additional wells was guided by <br />recommendations in the McLaughlin Water Engineer's report "Hydrology and Water <br />Resources of the Southern High Plains" (January, 2001). Decisions and well selections in <br />the field have resulted in different wells from those meeting the McLaughlin report criteria <br />being selected. Consequently additional wells should be added in subsequent reports in <br />