Summary Statistics from Past USGS Reports 1987 to 2019

Available Summary Statistics

Number of observation wells measured for water-level comparison periods

Area-weighted average water-level change, predevelopment to 1980, 2000 through 2019

Click on years in the "Time period" column to view reference.

Time period
Predevelopment (about 1950) to
State 
ColoradoKansasNebraskaNew MexicoOklahomaSouth DakotaTexasWyomingHigh Plains
1980-4.2-9.90.0-9.8-11.30.0-33.70.0-9.9
2000-9.0-18.20.7-14.5-13.30.3-34.5-0.1-11.9
2001-----------------11.1
2002-9.5-18.30.2-14.5-13.20.2-34.7-0.2-12.1
2003-9.9-18.9-0.3-14.4-13.70.2-34.9-0.2-12.6
2005-10.9-19.2-0.5-15.1-13.20.2-35.2-0.2-12.8
2007-12.8-22.7-1.0-15.7-12.40.0-36.9-0.4-14.0
2009-13.2-22.8-0.9-15.1-12.30.0-36.7-0.4-14.0
2011-12.9-23.60.2-14.9-11.10.3-39.0-0.9-14.2
2013-14.3-25.5-0.3-16.5-12.31.8-41.2-0.8-15.4
2015-14.8-26.2-0.9-16.5-12.50.5-41.1-0.8-15.8
2017-13.2-28.2-1.1-19.1-13.10.6-44.0-0.8-16.8
2019-14.0-27.3-0.4-19.1-14.20.5-44.1-0.8-16.5