Table 2. Estimated annual discharge from the Edwards aquifer by county, 1934--97
[thousands of acre-feet; footnotes denoted by *, #, +]
---------------------------------------------------------------------------------------
Calendar Kinney- Medina Bexar Comal Hays Total* Well Spring
year Uvalde County County County County discharge discharge
Counties
---------------------------------------------------------------------------------------
1934 12.6 1.3 109.3 229.1 85.6 437.9 101.9 336.0
1935 12.2 1.5 171.8 237.2 96.9 519.6 103.7 415.9
1936 26.6 1.5 215.2 261.7 93.2 598.2 112.7 485.5
1937 28.3 1.5 201.8 252.5 87.1 571.2 120.2 451.0
1938 25.2 1.6 187.6 250.0 93.4 557.8 120.1 437.7
1939 18.2 1.6 122.5 219.4 71.1 432.8 118.9 313.9
1940 16.1 1.6 116.7 203.8 78.4 416.6 120.1 296.5
1941 17.9 1.6 197.4 250.0 134.3 601.2 136.8 464.4
1942 22.5 1.7 203.2 255.1 112.2 594.7 144.6 450.1
1943 19.2 1.7 172.0 249.2 97.2 539.3 149.1 390.2
1944 11.6 1.7 166.3 252.5 135.3 567.4 147.3 420.1
1945 12.4 1.7 199.8 263.1 137.8 614.8 153.3 461.5
1946 6.2 1.7 180.1 261.9 134.0 583.9 155.0 428.9
1947 13.8 2.0 193.3 256.8 127.6 593.5 167.0 426.5
1948 9.2 1.9 159.2 203.0 77.3 450.6 168.7 281.9
1949 13.2 2.0 165.3 209.5 89.8 479.8 179.4 300.4
1950 17.8 2.2 177.3 191.1 78.3 466.7 193.8 272.9
1951 16.9 2.2 186.9 150.5 69.1 425.6 209.7 215.9
1952 22.7 3.1 187.1 133.2 78.8 424.9 215.4 209.5
1953 27.5 4.0 193.7 141.7 101.4 468.3 229.8 238.5
1954 26.6 6.3 208.9 101.0 81.5 424.3 246.2 178.1
1955 28.3 11.1 215.2 70.1 64.1 388.8 261.0 127.8
1956 59.6 17.7 229.6 33.6 50.4 390.9 321.1 69.8
1957 29.0 11.9 189.4 113.2 113.0 456.5 237.3 219.2
1958 23.7 6.6 199.5 231.8 155.9 617.5 219.3 398.2
1959 43.0 8.3 217.5 231.7 118.5 619.0 234.5 384.5
1960 53.7 7.6 215.4 235.2 143.5 655.4 227.1 428.3
1961 56.5 6.4 230.3 249.5 140.8 683.5 228.2 455.3
1962 64.6 8.1 220.0 197.5 98.8 589.0 267.9 321.1
1963 51.4 9.7 217.3 155.7 81.9 516.0 276.4 239.6
1964 49.3 8.6 201.0 141.8 73.3 474.0 260.2 213.8
1965 46.8 10.0 201.1 194.7 126.3 578.9 256.1 322.8
1966 48.5 10.4 198.0 198.9 115.4 571.2 255.9 315.3
1967 81.1 15.2 239.7 139.1 82.3 557.4 341.3 216.1
1968 58.0 9.9 207.1 238.2 146.8 660.0 251.7 408.3
1969 88.5 13.6 216.3 218.2 122.1 658.7 307.5 351.2
1970 100.9 16.5 230.6 229.2 149.9 727.1 329.4 397.7
1971 117.0 32.4 262.8 168.2 99.1 679.5 406.8 272.7
1972 112.6 28.8 247.7 234.3 123.7 747.1 371.3 375.8
1973 96.5 14.9 273.0 289.3 164.3 838.0 310.4 527.6
1974 133.3 28.6 272.1 286.1 141.1 861.2 377.4 483.8
1975 112.0 22.6 259.0 296.0 178.6 868.2 327.8 540.4
1976 136.4 19.4 253.2 279.7 164.7 853.4 349.5 503.9
1977 156.5 19.9 317.5 295.0 172.0 960.9 380.6 580.3
1978 154.3 38.7 269.5 245.7 99.1 807.3 431.8 375.5
1979 130.1 32.9 294.5 300.0 157.0 914.5 391.5 523.0
1980 151.0 39.9 300.3 220.3 107.9 819.4 491.1 328.3
1981 104.2 26.1 280.7 241.8 141.6 794.4 387.1 407.3
1982 129.2 33.4 305.1 213.2 105.5 786.4 453.1 333.3
1983 107.7 29.7 277.6 186.6 118.5 720.1 418.5 301.6
1984 151.1 46.9 309.7 108.9 85.7 702.3 529.8 172.5
1985 156.9 59.2 295.5 200.0 144.9 856.5 522.5 334.0
1986 #91.7 41.9 294.0 229.3 160.4 #817.3 429.3 #388.1
1987 #95.1 15.9 326.6 286.2 198.4 #922.0 364.1 #558.0
1988 #156.7 82.2 317.4 236.5 116.9 #909.7 540.0 #369.8
1989 156.9 70.5 305.6 147.9 85.6 766.6 542.4 224.1
1990 118.1 69.7 276.8 171.3 94.1 730.0 489.4 240.6
1991 76.6 25.6 315.5 221.9 151.0 790.6 436.3 354.3
1992 76.5 9.3 370.5 412.4 261.3 1,130.2 327.3 802.8
1993 107.5 17.8 371.0 349.5 151.0 996.7 407.3 589.4
1994 95.5 41.1 297.7 269.8 110.6 814.8 424.6 390.2
1995 90.8 35.2 272.1 235.0 127.8 761.0 399.6 361.3
1996 117.6 66.3 286.8 150.2 84.7 705.6 493.6 212.0
1997 +29.9 +7.0 +255.3 243.3 149.2 +684.7 +300.7 384.0
---------------------------------------------------------------------------------------
* Total might not equal sum of county values due
to rounding.
# Differs from value in Edwards Underground Water District Bulletins 46--48, table 3, due to correction of an error in the method of computing the Leona Formation underflow.
+ Does not include irrigation discharge (Bexar, Medina, and Uvalde Counties).