High Plains Aquifer Water-Level Monitoring Study
Area-weighted water-level change, 1980 to 1988 through 1999, and 2002

Area-weighted water-level change, 1980 to 1988 through 1999, and 2002, in feet

Time perioda	State
	Colorado	Kansas	Nebraska	New Mexico	Oklahoma	South Dakota	Texas	Wyoming	High Plains
1980-88 ()	--	--	--	--	--	--	--	--	0.8
1980-89 ()	-1.5	-4.6	1.3	-0.1	-0.4	-2.4	0.6	3.1	-0.2
1980-90 ()	-3.1	-4.9	0.7	-0.7	-0.3	-1.0	-1.2	3.1	-1.0
1980-91 ()	-3.2	-6.2	0.2	-2.3	-0.1	-0.7	-1.7	2.9	-1.4
1980-92 ()	-3.0	-7.4	-0.3	-1.9	-1.8	0.1	-2.5	1.3	-2.2
1980-93 ()	-3.3	-7.3	0.0	-3.4	-0.4	-0.9	-2.0	0.6	-2.1
1980-94 ()	-3.4	-6.1	1.9	-2.3	-1.8	1.5	-3.0	-2.5	-1.5
1980-95 ()	-4.2	-7.5	1.8	-3.1	-2.8	-0.6	-4.8	-3.4	-2.4
1980-96 ()	-4.7	-7.7	1.6	-6.2	-3.7	-0.8	-6.1	-1.9	-2.8
1980-97 ()	-5.9	-8.0	2.3	-4.0	-2.7	3.1	-7.4	-1.5	-2.7
1980-98 ()	-6.1	-8.0	2.4	-8.0	-3.1	2.4	-7.9	-3.0	-3.1
1980-99 ()	-6.2	-8.4	2.6	-5.1	-4.6	3.1	-8.9	-3.2	-3.2
1980-02b ()	-5.1	-9.1	0.6	-5.5	-4.0	0.3	-9.6	-0.3	-4.0

^a Click year to view reference.
^b Statistics were not computed for 1980 to 2000 and 1980 to 2001.