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, 1980 to 1988 through 1999, and 2002, in feet

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

Time periodState
ColoradoKansasNebraskaNew MexicoOklahomaSouth DakotaTexasWyomingHigh Plains
1980-88-- -- -- -- -- -- -- -- 0.8
1980-89-1.5-4.61.3-0.1-0.4-2.40.63.1-0.2
1980-90-3.1-4.90.7-0.7-0.3-1.0-1.23.1-1.0
1980-91-3.2-6.20.2-2.3-0.1-0.7-1.72.9-1.4
1980-92-3.0-7.4-0.3-1.9-1.80.1-2.51.3-2.2
1980-93-3.3-7.30.0-3.4-0.4-0.9-2.00.6-2.1
1980-94-3.4-6.11.9-2.3-1.81.5-3.0-2.5-1.5
1980-95-4.2-7.51.8-3.1-2.8-0.6-4.8-3.4-2.4
1980-96-4.7-7.71.6-6.2-3.7-0.8-6.1-1.9-2.8
1980-97-5.9-8.02.3-4.0-2.73.1-7.4-1.5-2.7
1980-98-6.1-8.02.4-8.0-3.12.4-7.9-3.0-3.1
1980-99-6.2-8.42.6-5.1-4.63.1-8.9-3.2-3.2
1980-02a-5.1-9.10.6-5.5-4.00.3-9.6-0.3-4.0

a Statistics were not computed for 1980 to 2000 and 1980 to 2001.