2017-Recharge-Report

TABLE 1. ESTIMATED ANNUAL GROUNDWATER RECHARGE TO THE SAN ANTONIO SEGMENT OF THE BALCONES FAULT ZONE EDWARDS AQUIFER BY DRAINAGE BASIN, 1934–2017 (IN THOUSANDS OF ACRE-FEET).

Area between Medina River and Cibolo Creek/ Dry Comal Creek Basins

Nueces River/ West Nueces River Basin

Area between Sabinal River and Medina River Basins

Frio River/ Dry Frio River Basin

Cibolo Creek/ Dry Comal Creek Basin

Blanco River Basin

Sabinal River Basin

Medina River Basin

Year 1934

Total a

8.6

27.9 192.3 157.4 75.7 69.3 49.5 60.3 151.8 95.1 42.3 76.0 71.1 54.2 77.7 25.6 86.1 35.5 28.4 15.7 15.1 31.6 22.1 133.6 300.0 158.9 128.1 151.3 46.6 27.0 57.1 83.0 134.0 137.9 176.0 113.8 141.9 212.4 144.6 256.9 4.2

7.5 56.6 43.5 21.5 20.9 17.0 23.8 50.6 34.0 11.1 24.8 30.8 16.5 16.7 26.0 31.5 13.3 7.3 3.2 3.2 7.1 0.6 1.6 65.4

19.9 166.2 142.9 61.3 54.1 33.1 56.6 139.0 84.4 33.8 74.3 78.6 52.0 45.2 20.2 70.3 27.0 26.4 30.2 129.5 294.9 96.7 127.0 105.4 23.5 10.3 61.3 104.0 78.2 64.8 198.7 84.2 81.6 155.6 154.6 286.4 4.4 11.9 7.7 3.6

46.5 71.1 91.6 80.5 65.5 42.4 38.8 54.1 51.7 41.5 50.5 54.8 51.4 44.0 14.8 33.0 23.6 21.1 25.4 36.2 25.3 16.5 6.3 55.6 95.5 94.7

21.0 138.2 108.9 47.8 46.2 9.3 29.3 116.3 66.9 29.5 72.5 79.6 105.1 55.5 17.5 41.8 17.3 15.3 50.1 20.1 175.6 190.9 57.4 89.7 69.3 16.7 4.2 4.3 2.0

28.4 182.7 146.1 63.9 76.8 9.6 30.8 191.2 93.6 58.3 152.5 129.9 155.3 79.5 19.9 55.9 24.6 12.5 102.3 42.3 10.0 397.9 268.7 77.9 160.0 110.8 24.7 21.3 51.1 115.3 66.5 57.3 120.5 99.9 113.8 82.4 104.2 211.7 3.3 2.2

19.8 179.6 39.8 1,258.2 42.7 909.6 21.2 400.7 36.4 432.7 11.1 399.0 18.8 308.8 57.8 850.7 28.6 557.8 20.1 273.1 46.2 560.9 35.7 527.8 40.7 556.1 31.6 422.6 13.2 178.3 23.5 508.1 17.4 200.2 10.6 139.9 20.7 275.5 24.9 167.6 10.7 162.1 9.5 192.0 76.4 1,142.6 70.7 1,711.2 33.6 690.4 62.4 824.8 49.4 717.1 18.9 239.4 16.2 170.7 22.2 413.2 66.7 623.5 34.6 615.2 19.0 466.5 49.3 884.7 46.6 610.5 39.5 661.6 22.2 925.3 33.4 756.4 82.2 1,486.5 8.2 43.7

1935 411.3 1936 176.5

1937 1938 1940 1941 1943 1944 1945 1946 1947 1948 1950 1951 1952 1953 1954

28.8 63.5 50.4 89.9 36.5 64.1 47.3 80.9 72.4 41.1 41.5 18.3 27.9 21.4 61.3

1939 227.0

1942 103.5

1949 166.0

1955 128.0

1956

15.6

1957 108.6 1958 266.7 1959 109.6

223.8 61.6 64.9 57.4

1960 1961 1962 1963

88.7 85.2 47.4 39.7

104.0 88.3 57.3 41.9 43.3 54.6 50.5 44.7 59.9 55.4 68.0 68.7 87.9 97.6

4.3 5.0

9.3 35.8 78.8 44.5 30.2 83.1 60.2 68.8 81.4 74.3

1964 126.1

16.3 23.2 37.7 30.4 66.4 30.7 35.4 39.2 49.0

1965

97.9

1966 169.2

1967

82.2

1968 130.8 1969 119.7 1970 112.6 1971 263.4 1972 108.4 1973 190.6

123.9

237.2

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E DWARD S AQU I F E R AU THOR I T Y