2018-Discharge-Report

(Table 4. continued)

Domestic/ Stock

Industrial/ Commercial

Year 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Irrigation

Municipal

Springs

77.4 a/b

253.0 266.5 273.3 261.3 245.9 228.4 237.2 220.3 255.1 259.1 236.0 273.6 247.5 259.9 265.5 257.9 239.5 220.1 247.2 232.6 268.3 250.5

12.3 13.4 13.4 13.4 13.4 13.6 13.7 13.8 13.8 13.8 13.8 13.6 13.6 13.6 13.7 13.7 13.9 13.9 14.0 14.0 14.1

34.4 41.7 b 42.4 33.8 29.4 32.3 31.7 28.1 34.3 34.5 27.6 28.8 25.7 26.4 23.6 22.6 26.3 22.8 21.9 24.0 22.8 22.1

383.9 464.1 456.1 337.5 529.4 609.9 621.5 622.9 647.1 312.0 620.6 417.1 288.0 490.0 265.2 302.3 232.8 195.4 404.5 545.0 493.0 393.0

131.9 a 113.6 106.3

79.0 97.1 79.6 55.4 85.3

149.1

42.5

112.7 108.9

13.5**

72.7

124.9

90.6 76.3 75.3 42.2 54.7 74.1 84.0

For period of record 1955–2018: Median 95.4

236.9 216.4

13.7** 13.5**

22.8 24.8

384.2 391.5

Mean

101.7

For 2009–2018 (last ten years): Median 75.8

249.0 248.9

13.8 13.8

23.2 23.8

347.7 360.9

Mean

80.4

Data source: USGS unpublished report and Edwards Aquifer Authority files (2018). a = Includes estimates from Atascosa County discharge by Edwards Aquifer users. b = Includes estimates from Guadalupe County discharge by Edwards Aquifer users. * = In 1995 USGS revised the method of calculating domestic/livestock pumpage, which significantly decreased the estimated pumping; EAA believes the post-1995 estimates to be more accurate than the previous method. ** = In 2008, EAA began to estimate domestic/livestock pumping based on number of new wells permitted annually and discontinuation of Kinney County pumping in total. Period of record mean and median only include post 2008 estimates. Differences in totals may occur due to rounding.

10

| 2018 RECHARGE REPORT