High Plains Water-Level Monitoring Study

Number of observation wells measured for water-level comparison periods predevelopment to 2000 through 2019

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

Time period, predevelopment (about 1950) to	State
	Colorado	Kansas	Nebraska	New Mexico	Oklahoma	South Dakota	Texas	Wyoming	High Plains
2000	404	574	1,714	488 a	178	71	857	20	4,306
2001	404	634	1,710	319 b	163	72	750	19	4,071
2002	394	606	1,538	208 c	191	72	834	17	3,860
2003	333	606	1,579	204 d	175	70	807	18	3,792
2005	367	511	1,634	141 e	110	73	828	18	3,682
2007	363	666	1,624	119 f	76	72	703	20	3,643
2009	263	566	1,584	116 g	92	71	726	21	3,439
2011	325	530	1,504	55 h	90	67	734	17	3,322
2013	325	506	1,508	100 i	80	68	745	17 j	3,349
2015	335	484	1,449	101 k	71	67	639	18 l	3,164
2017	97	497	1,458	101 m	70	67	626	12	2,928
2019	105	426	1,384	105 n	65	44	600	12	2,741

^a Includes wells measured in 1996 to 1999 because many wells in New Mexico are measured on a 5-year schedule.
^b Includes wells measured in 1997 to 2000 because many wells in New Mexico are measured on a 5-year schedule.
^c Includes wells measured in 1998 to 2001 because many wells in New Mexico are measured on a 5-year schedule.
^d Includes wells measured in 1999 to 2002 because many wells in New Mexico are measured on a 5-year schedule.
^e Includes wells measured in 2001 to 2004 because many wells in New Mexico are measured on a 5-year schedule.
^f Includes wells measured in 2003 to 2006 because many wells in New Mexico are measured on a 5-year schedule.
^g Includes wells measured in 2005 to 2008 because many wells in New Mexico are measured on a 5-year schedule.
^h Includes wells measured in 2007 to 2010 because many wells in New Mexico are measured on a 5-year schedule.
ⁱ Includes wells measured in 2009 to 2012 because many wells in New Mexico are measured on a 5-year schedule.
^j Includes wells measured in 2012 because few wells were measured in Wyoming in 2013
^k Includes wells measured in 2011 to 2014 because many wells in New Mexico are measured on a 5-year schedule.
^l Includes wells measured in 2011 to 2014 because few wells were measured in Wyoming in predevelopment and in 2015.
^m Includes wells measured in 2013 to 2016 because many wells in New Mexico are measured on a 5-year schedule.
ⁿ Includes wells measured in 2015 to 2018 because many wells in New Mexico are measured on a 5-year schedule.