Country= U.S.A. Station= SAN ANTONIO N M River= RIO GRANDE Area= 70961.79 Lat= 33.92 Lon= -106.85 Source= USGS PointID= 8355500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1917 Ending Year= 1991 Total Years= 75 Total Usable Years= 67 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1917 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1918 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1919 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1920 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1921 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1922 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1923 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1924 53.8 63.08 35.49 193.97 222.06 99.35 65.77 51.67 65.51 62.85 51.91 50.97 84.7 1925 47.13 48.14 34.35 34.69 40.3 39.24 38.05 47.43 42.22 52.71 43.23 39.74 42.27 1926 45.31 42.68 39.46 60.03 71.48 130.26 95.82 59.28 61.68 53.98 48.14 48.14 63.02 1927 45.31 53.8 45.31 91.94 120.21 98.97 66.11 105.32 49.65 71.16 54.95 52.39 71.26 1928 42.48 35.4 42.75 41.44 111.99 268.73 63.03 46.36 45.61 50.18 55.92 48.73 71.05 1929 28.41 30.49 49.87 77.78 131.45 295.86 70.95 35.55 83.79 84.5 58.65 52.89 83.35 1930 46.54 41.82 42.42 43.87 47.34 27.36 24.92 60.92 52.03 70.11 53.52 44.99 46.32 1931 41.21 38.25 33.88 33.42 19.38 20.28 13.42 13.37 12.59 30 27.51 28.19 25.96 1932 23.2 26.2 26.56 25.94 20.81 27.09 30.56 21.49 19.72 37.74 36.97 31.12 27.28 1933 31.94 24.37 27.73 26.69 82.91 30.77 27.09 21.61 39.05 40.6 33.34 32.39 34.87 1934 28.72 26.85 27.13 19.28 2.56 7.97 2.8 2.21 5.58 9.7 7.07 19.87 13.31 1935 20.9 17.94 15.35 16.39 19.5 49.64 9.45 6.52 8.69 16.66 20.33 22.9 18.69 1936 19.54 17.88 19.62 19.06 6.12 19.46 10.12 5.71 5.88 22.58 28.19 22.67 16.4 1937 14.79 19.24 21.37 15.45 8.04 23.03 29.17 8.49 12.76 31.9 29.15 29.81 20.27 1938 25.79 25.17 25.41 29.78 29.79 16.13 17.49 12.58 28.04 31.18 29.23 26.35 24.75 1939 26.95 23.28 27.43 24.09 7.47 14.51 7.36 7.36 7.74 21.55 21.75 21.6 17.59 1940 22.11 22.71 22.39 20.91 7.82 8.98 4.82 0.79 5.22 16.71 16.59 17.11 13.85 1941 17.3 17.82 16.65 15.03 18.53 24.89 8.87 9.22 11.85 25.96 24.31 23.44 17.82 1942 22.47 20.68 18.74 23.85 114.36 26.41 12.08 10.94 23.26 31.35 31.8 33.83 30.81 1943 32.36 27.64 26.97 38.51 18.93 16.88 7.87 9.65 15.74 26.1 31.55 27.72 23.33 1944 24.69 22.75 22.31 22.98 31.04 17.6 16.23 12.58 16.35 30.82 30.47 26.82 22.89 1945 26.11 24.88 24.79 23.09 40.57 53.88 17.08 25.03 24.25 39.64 33.97 32.62 30.49 1946 30.77 29.03 28.65 20.92 20.7 17.28 10.03 8.76 26.44 36.37 31.58 29.28 24.15 1947 27.96 26.77 25.63 24.9 19.39 81.14 41.1 14.14 20.83 36.57 34.57 32.38 32.11 1948 31.6 31.98 42.42 27.68 15.42 28.09 21.15 16.03 23.64 38 36.58 30.98 28.63 1949 24.37 31.23 29.19 24.9 17.38 39.97 15.98 14.16 24.43 36.89 32.54 30.56 26.8 1950 25.23 28.23 26.38 20.24 13.31 12.43 17.01 15.37 31.84 36.68 32 30.47 24.1 1951 27.84 27.16 22.93 19.73 13.5 26.64 22.35 15.7 37.42 45.54 38.9 27.3 27.08 1952 24.72 25.26 28.75 33.15 44.96 85.94 16.42 15.11 22.62 43.09 34.24 32.45 33.89 1953 30.44 26.57 26.2 21.12 12.47 24.66 9.94 18.9 14.97 29.2 26.92 23.89 22.11 1954 20.49 20.05 19.24 14.31 12.21 7.26 5.15 6.03 6.32 15.39 20.91 18.48 13.82 1955 16.24 16.04 16.41 16.3 12.25 23.58 7.3 4.08 11.24 21.12 20.54 19.71 15.4 1956 17.44 16.03 15.26 11.26 6.4 4.48 11.54 3.9 6.16 17.05 20.35 18.91 12.4 1957 15.01 15.14 14.92 15.99 35.12 23.9 16.81 14.02 19.58 26.95 24.23 21.72 20.28 1958 18.9 17.99 18.53 21.2 13.88 26.68 21.2 7.57 17.33 30.44 24.65 23.13 20.12 1959 20.56 18.76 18.21 18.89 14.03 11.26 6.64 5.85 16.59 31.6 25.37 21.66 17.45 1960 19.92 18.9 18.15 16.47 9.43 5.93 2.37 4.89 7.55 21.06 20.5 19.63 13.73 1961 17.73 16.71 16.4 16.07 14.81 5.42 5.75 5.86 9.68 22.44 20.46 17.15 14.04 1962 14.86 16.34 15.76 15.85 21.6 32.6 26 10.7 17.81 30.23 23.96 21.54 20.6 1963 17.01 20.7 19.31 16.61 11.9 16.8 4.61 6.2 18.12 27.98 24.3 20.38 16.99 1964 18.24 17.54 16.27 17.62 11.1 13.1 3.7 5.06 10.89 27.94 23.55 20.37 15.45 1965 19.75 18.06 16.24 14.15 27.24 67.14 21.97 9.91 24.68 29.3 25.01 21.72 24.6 1966 19.02 17.46 17.84 22.6 9.8 13.18 9.36 13.32 20.56 29.12 25.01 21.38 18.22 1967 19.91 18.1 16.34 12.02 12.15 55.53 23.28 9.19 21.26 26.92 24.77 21.88 21.78 1968 20.2 19.25 18.48 28.51 21.3 45.46 10.43 13.93 19.66 30.09 26.12 22.35 22.98 1969 21.17 19.17 19.55 30.4 12.82 16.43 8.02 6.51 14.75 34.61 29.59 23.54 19.71 1970 21.16 20.24 18.7 22.43 25.13 63.51 19.73 10.88 22.29 35.32 29.72 23.78 26.07 1971 21.12 21.13 21.94 76.81 221.23 227.28 69.73 17.89 35.52 38.68 31.08 25.88 67.36 1972 22.82 24.78 71.32 36.59 24.25 50.22 24.72 17.06 28.44 30.78 27.6 24.41 31.92 1973 22.74 21.93 23.34 59.24 178.4 185.85 84.68 83.48 85.6 52.93 43.83 36.65 73.22 1974 34.13 33.39 124.63 143.14 45.33 66.87 22.32 14.71 31.58 35.88 29.37 25.42 50.56 1975 22.53 22.3 19.83 26.69 23.12 28.97 24.71 12.03 22.15 35.64 29.92 26.39 24.52 1976 23.21 23.73 21.83 21.52 19.91 20.58 11.89 16.03 24.36 37.54 28.25 24.29 22.76 1977 21.35 21.02 20.56 21.95 17.42 22.62 13.03 12.14 18.12 27.27 25.9 22.74 20.34 1978 21.46 21.08 21.87 19.57 32.61 28.52 21.1 17.8 25.01 33.3 26.64 22.9 24.32 1979 19.78 22.53 20.45 19.62 16.06 21.67 19.45 18.69 28.96 28.91 25.9 25.12 22.26 1980 23.27 27.22 24.58 58.29 90.08 47.66 17.23 15.88 24.3 29.29 24.13 21.07 33.58 1981 18.85 18.7 18.11 14.38 9.75 12.2 19.5 17.08 22.11 29.69 24.32 21.26 18.83 1982 18.45 16.96 16.13 14.63 15.53 11.18 16.69 25.93 33.12 32.88 26.85 21.91 20.86 1983 19.79 17.83 17.17 39.21 141.24 211.11 198.53 158.47 148.39 40.01 29.35 25.38 87.21 1984 25.6 38.76 114.49 153.6 207.54 223.19 82.38 65.72 67.53 47.42 37.76 36.4 91.7 1985 34.01 22.32 66.87 29.84 17.39 27.93 14.66 15.07 34.35 34.59 26.36 22.74 28.84 1986 22.9 22.23 28.74 74.34 73.3 116.03 102.08 33.62 60.88 73.83 63.13 38.64 59.14 1987 25.12 20.65 22.37 34.11 30.68 29.28 16.94 33.49 34.29 30.44 24.86 20.27 26.88 1988 18.65 19.11 20.31 25.64 40.16 20.96 17.17 13.7 27.48 31.83 25.2 21.58 23.48 1989 18.92 17.09 17.25 15.6 14.39 7.83 6.56 11.63 19.77 25.11 21.36 18.99 16.21 1990 17.05 16.46 17.23 15.18 12.59 6.98 8.11 10.43 14.6 22.3 20.48 15.1 14.71 1991 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 25.06 24.67 28.07 34.35 42.27 51.23 26.69 21.51 28.22 34.87 30.41 27.25 31.22 Std Dev 8.56 9.17 19.49 32.95 52.34 64.46 31.33 25.6 22.99 13.92 10.41 8.81 20.2