Table 1. Estimated
annual recharge to the Edwards aquifer by basin, 1934–99
[thousands of acre-feet]
|
Calendar |
Nueces- |
Frio-Dry |
Sabinal |
Area between |
Medina |
Area between |
Cibolo |
Blanco |
Total3 |
|
1934 |
8.6 |
27.9 |
7.5 |
19.9 |
46.5 |
21.0 |
28.4 |
19.8 |
179.6 |
|
1935 |
411.3 |
192.3 |
56.6 |
166.2 |
71.1 |
138.2 |
182.7 |
39.8 |
1,258.2 |
|
1936 |
176.5 |
157.4 |
43.5 |
142.9 |
91.6 |
108.9 |
146.1 |
42.7 |
909.6 |
|
1937 |
28.8 |
75.7 |
21.5 |
61.3 |
80.5 |
47.8 |
63.9 |
21.2 |
400.7 |
|
1938 |
63.5 |
69.3 |
20.9 |
54.1 |
65.5 |
46.2 |
76.8 |
36.4 |
432.7 |
|
1939 |
227.0 |
49.5 |
17.0 |
33.1 |
42.4 |
9.3 |
9.6 |
11.1 |
399.0 |
|
1940 |
50.4 |
60.3 |
23.8 |
56.6 |
38.8 |
29.3 |
30.8 |
18.8 |
308.8 |
|
1941 |
89.9 |
151.8 |
50.6 |
139.0 |
54.1 |
116.3 |
191.2 |
57.8 |
850.7 |
|
1942 |
103.5 |
95.1 |
34.0 |
84.4 |
51.7 |
66.9 |
93.6 |
28.6 |
557.8 |
|
1943 |
36.5 |
42.3 |
11.1 |
33.8 |
41.5 |
29.5 |
58.3 |
20.1 |
273.1 |
|
1944 |
64.1 |
76.0 |
24.8 |
74.3 |
50.5 |
72.5 |
152.5 |
46.2 |
560.9 |
|
1945 |
47.3 |
71.1 |
30.8 |
78.6 |
54.8 |
79.6 |
129.9 |
35.7 |
527.8 |
|
1946 |
80.9 |
54.2 |
16.5 |
52.0 |
51.4 |
105.1 |
155.3 |
40.7 |
556.1 |
|
1947 |
72.4 |
77.7 |
16.7 |
45.2 |
44.0 |
55.5 |
79.5 |
31.6 |
422.6 |
|
1948 |
41.1 |
25.6 |
26.0 |
20.2 |
14.8 |
17.5 |
19.9 |
13.2 |
178.3 |
|
1949 |
166.0 |
86.1 |
31.5 |
70.3 |
33.0 |
41.8 |
55.9 |
23.5 |
508.1 |
|
1950 |
41.5 |
35.5 |
13.3 |
27.0 |
23.6 |
17.3 |
24.6 |
17.4 |
200.2 |
|
1951 |
18.3 |
28.4 |
7.3 |
26.4 |
21.1 |
15.3 |
12.5 |
10.6 |
139.9 |
|
1952 |
27.9 |
15.7 |
3.2 |
30.2 |
25.4 |
50.1 |
102.3 |
20.7 |
275.5 |
|
1953 |
21.4 |
15.1 |
3.2 |
4.4 |
36.2 |
20.1 |
42.3 |
24.9 |
167.6 |
|
1954 |
61.3 |
31.6 |
7.1 |
11.9 |
25.3 |
4.2 |
10.0 |
10.7 |
162.1 |
|
1955 |
128.0 |
22.1 |
.6 |
7.7 |
16.5 |
4.3 |
3.3 |
9.5 |
192.0 |
|
1956 |
15.6 |
4.2 |
1.6 |
3.6 |
6.3 |
2.0 |
2.2 |
8.2 |
43.7 |
|
1957 |
108.6 |
133.6 |
65.4 |
129.5 |
55.6 |
175.6 |
397.9 |
76.4 |
1,142.6 |
|
1958 |
266.7 |
300.0 |
223.8 |
294.9 |
95.5 |
190.9 |
268.7 |
70.7 |
1,711.2 |
|
1959 |
109.6 |
158.9 |
61.6 |
96.7 |
94.7 |
57.4 |
77.9 |
33.6 |
690.4 |
|
1960 |
88.7 |
128.1 |
64.9 |
127.0 |
104.0 |
89.7 |
160.0 |
62.4 |
824.8 |
|
1961 |
85.2 |
151.3 |
57.4 |
105.4 |
88.3 |
69.3 |
110.8 |
49.4 |
717.1 |
|
1962 |
47.4 |
46.6 |
4.3 |
23.5 |
57.3 |
16.7 |
24.7 |
18.9 |
239.4 |
|
1963 |
39.7 |
27.0 |
5.0 |
10.3 |
41.9 |
9.3 |
21.3 |
16.2 |
170.7 |
|
1964 |
126.1 |
57.1 |
16.3 |
61.3 |
43.3 |
35.8 |
51.1 |
22.2 |
413.2 |
|
1965 |
97.9 |
83.0 |
23.2 |
104.0 |
54.6 |
78.8 |
115.3 |
66.7 |
623.5 |
|
1966 |
169.2 |
134.0 |
37.7 |
78.2 |
50.5 |
44.5 |
66.5 |
34.6 |
615.2 |
|
1967 |
82.2 |
137.9 |
30.4 |
64.8 |
44.7 |
30.2 |
57.3 |
19.0 |
466.5 |
|
1968 |
130.8 |
176.0 |
66.4 |
198.7 |
59.9 |
83.1 |
120.5 |
49.3 |
884.7 |
|
1969 |
119.7 |
113.8 |
30.7 |
84.2 |
55.4 |
60.2 |
99.9 |
46.6 |
610.5 |
|
1970 |
112.6 |
141.9 |
35.4 |
81.6 |
68.0 |
68.8 |
113.8 |
39.5 |
661.6 |
|
1971 |
263.4 |
212.4 |
39.2 |
155.6 |
68.7 |
81.4 |
82.4 |
22.2 |
925.3 |
|
1972 |
108.4 |
144.6 |
49.0 |
154.6 |
87.9 |
74.3 |
104.2 |
33.4 |
756.4 |
|
1973 |
190.6 |
256.9 |
123.9 |
286.4 |
97.6 |
237.2 |
211.7 |
82.2 |
1,486.5 |
|
1974 |
91.1 |
135.7 |
36.1 |
115.3 |
96.2 |
68.1 |
76.9 |
39.1 |
658.5 |
|
1975 |
71.8 |
143.6 |
47.9 |
195.9 |
93.4 |
138.8 |
195.7 |
85.9 |
973.0 |
|
1976 |
150.7 |
238.6 |
68.2 |
182.0 |
94.5 |
47.9 |
54.3 |
57.9 |
894.1 |
|
1977 |
102.9 |
193.0 |
62.7 |
159.5 |
77.7 |
97.9 |
191.6 |
66.7 |
952.0 |
|
1978 |
69.8 |
73.1 |
30.9 |
103.7 |
76.7 |
49.6 |
72.4 |
26.3 |
502.5 |
|
1979 |
128.4 |
201.4 |
68.6 |
203.1 |
89.4 |
85.4 |
266.3 |
75.2 |
1,117.8 |
|
1980 |
58.6 |
85.6 |
42.6 |
25.3 |
88.3 |
18.8 |
55.4 |
31.8 |
406.4 |
|
1981 |
205.0 |
365.2 |
105.6 |
252.1 |
91.3 |
165.0 |
196.8 |
67.3 |
1,448.4 |
|
1982 |
19.4 |
123.4 |
21.0 |
90.9 |
76.8 |
22.6 |
44.8 |
23.5 |
422.4 |
|
1983 |
79.2 |
85.9 |
20.1 |
42.9 |
74.4 |
31.9 |
62.5 |
23.2 |
420.1 |
|
1984 |
32.4 |
40.4 |
8.8 |
18.1 |
43.9 |
11.3 |
16.9 |
25.9 |
197.9 |
|
1985 |
105.9 |
186.9 |
50.7 |
148.5 |
64.7 |
136.7 |
259.2 |
50.7 |
1,003.3 |
|
1986 |
188.4 |
192.8 |
42.2 |
173.6 |
74.7 |
170.2 |
267.4 |
44.5 |
1,153.7 |
|
1987 |
308.5 |
473.3 |
110.7 |
405.5 |
90.4 |
229.3 |
270.9 |
114.9 |
2,003.6 |
|
1988 |
59.2 |
117.9 |
17.0 |
24.9 |
69.9 |
12.6 |
28.5 |
25.5 |
355.5 |
|
1989 |
52.6 |
52.6 |
8.4 |
13.5 |
46.9 |
4.6 |
12.3 |
23.6 |
214.4 |
|
1990 |
479.3 |
255.0 |
54.6 |
131.2 |
54.0 |
35.9 |
71.8 |
41.3 |
1,123.2 |
|
1991 |
325.2 |
421.0 |
103.1 |
315.2 |
52.8 |
84.5 |
109.7 |
96.9 |
1,508.4 |
|
1992 |
234.1 |
586.9 |
201.1 |
566.1 |
91.4 |
290.6 |
286.6 |
228.9 |
2,485.7 |
|
1993 |
32.6 |
78.5 |
29.6 |
60.8 |
78.5 |
38.9 |
90.9 |
37.8 |
447.6 |
|
1994 |
124.6 |
151.5 |
29.5 |
45.1 |
61.1 |
34.1 |
55.6 |
36.6 |
538.1 |
|
1995 |
107.1 |
147.6 |
34.7 |
62.4 |
61.7 |
36.2 |
51.1 |
30.6 |
531.3 |
|
1996 |
130.0 |
92.0 |
11.4 |
9.4 |
42.3 |
10.6 |
14.7 |
13.9 |
324.3 |
|
1997 |
176.9 |
209.1 |
57.0 |
208.4 |
63.3 |
193.4 |
144.2 |
82.3 |
1,134.6 |
|
1998 |
141.5 |
214.8 |
72.5 |
201.4 |
80.3 |
86.2 |
240.9 |
104.7 |
1,142.3 |
|
1999 |
101.4 |
136.8 |
30.8 |
57.2 |
77.1 |
21.2 |
27.9 |
21.0 |
473.5 |
|
Average |
116.7 |
134.4 |
42.0 |
107.8 |
61.6 |
70.1 |
104.9 |
42.6 |
680.0 |
1
Includes
recharge from ungaged areas (fig. 1).
2 Recharge to Edwards
aquifer from the Medina River Basin consists entirely of losses from Medina Lake
(Puente, 1978, p. 23).
3 Total might not
equal sum of basin values due to rounding.