Country= U.S.A. Station= THREE RIVERS, TX River= CHOKE CANYON RESERVOIR OWC Area= 14218.26 Lat= 28.48 Lon= -98.24 Source= USGS PointID= 8206910 Area Units= km2 Discharge Units= m3/sec Starting Year= 1952 Ending Year= 1993 Total Years= 42 Total Usable Years= 41 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1952 38.43 126.55 172.59 263.6 295.99 93.14 27.91 25.73 6.97 3.48 8.45 50.3 92.76 1953 109.62 194.33 394.37 190.6 1363.05 205.83 70.76 54.77 30.72 10.92 9.86 47.71 223.55 1954 102.34 68.48 41.91 83.17 204.09 69.2 27.44 11.06 5.25 2.5 7.46 30.43 54.44 1955 69.54 215.78 105.71 307.46 96.69 79.47 21.48 35.05 14.9 12.55 12.42 8.44 81.62 1956 8.52 113.04 50.67 92.43 128.24 24.23 24.7 14.68 3.51 3.48 0.91 0.53 38.75 1957 3.39 12.03 95.37 185.53 875.21 234.44 41.45 24.13 13.83 134.92 523.63 375.61 209.96 1958 410.64 276.46 177.4 117.83 393.72 49.11 46.89 33.27 158.77 196.35 57.04 42.83 163.36 1959 44.16 206.2 138.67 324.04 269.83 148.69 93.1 58.92 28.67 17.53 66.58 150.78 128.93 1960 263.99 318.83 344.86 102.81 94.4 46.62 58.82 19.68 14.02 82.62 116.62 514.41 164.81 1961 727.47 472.08 500.66 362.93 89.66 62.89 135.34 38.08 109.7 32.29 47.95 309.55 240.72 1962 225.48 233.36 171.51 119.65 334.35 92.41 41.92 26.59 10.82 16.71 33.75 82.92 115.79 1963 103.17 107.31 96.1 84.04 33.82 27.44 23.37 21.25 9.26 14.19 7.41 19.23 45.55 1964 45.03 55.46 176.66 202.98 148.16 38.74 21.41 8.58 5.73 5.28 2.66 3.7 59.53 1965 16.99 50.5 93.38 99 64.05 105.57 35.53 15.71 18.11 6.65 3.65 62.04 47.6 1966 72.69 223.28 55.75 59.16 349.35 67.78 53.42 25.33 37.99 50.14 31.95 35.16 88.5 1967 34.17 19.08 33.67 59.71 59.35 56.44 25.39 26.46 21.11 13.49 11.95 15.06 31.32 1968 85.05 69.49 91.77 317.91 343.53 299.96 209.67 98.65 42 74.88 105.77 232.35 164.25 1969 194.28 240.94 401.29 572.66 638.87 331.05 51.69 63.35 45.88 33.23 24.69 39.8 219.81 1970 73.97 60.56 129.25 126.6 104.98 41.19 33.35 21.89 28.24 21.96 32.14 28.92 58.59 1971 26.96 28.74 33.34 39.93 28.41 36.26 31.89 9.58 8.85 10.55 7.16 63.33 27.08 1972 77.45 58.37 62.08 66.11 83.87 68.35 51.12 47.79 42.67 34.2 50.1 79.87 60.17 1973 199.47 260.8 320.12 533.87 459.52 426.92 328.77 105.6 188.37 202.98 299.21 412.91 311.54 1974 549.44 589.09 438.99 161.74 129.39 118.95 102.45 87.49 113.42 56.36 184.6 261.82 232.81 1975 369.32 468.9 350.83 216.83 429.1 233.46 203.68 181.99 105.9 80.35 45.01 39.21 227.05 1976 39.84 42.59 72.29 90.32 223.06 183.4 183.17 185.92 150.98 66.33 56.55 98.58 116.09 1977 153.38 126.78 149.48 191.09 201.23 109 81.47 71.24 59.44 45.19 16.67 33.96 103.24 1978 87.65 111.48 42.88 52.68 50.35 70.12 75.93 44.42 11.4 13.72 18.96 41.26 51.74 1979 161.36 283.22 419.09 497.91 496.55 481.48 196.79 233.66 172.16 73.79 62.6 175.12 271.14 1980 175.44 306.11 217.95 360.29 358.53 265.76 108.55 85.91 64.84 59.71 64.91 63.49 177.62 1981 52.61 7.14 41.4 34.87 32.54 138.98 80.3 56.02 53.17 54.29 50.29 48.18 54.15 1982 48.71 52.99 50.36 175.84 245.2 95.96 84.4 75.13 82.97 73.83 72.75 196.42 104.55 1983 265.26 358.94 425.3 220.93 224.08 401.63 137.8 93.41 63.41 63.74 73.38 145.02 206.07 1984 88.24 270.09 405.85 135.07 101.68 96.62 92.6 83.33 77.45 113.41 96.47 56.48 134.77 1985 104.59 183.05 282.23 245.98 153.27 90.57 91.36 86.24 79.79 97.82 106.18 215.46 144.71 1986 95.37 224.18 79.6 83.93 210.82 361.24 251.11 86.98 82.4 85.38 193.24 266.15 168.37 1987 346.55 232.19 456.36 169.82 80.5 89.43 68.2 73.38 86.2 79.31 110.39 136.65 160.75 1988 213.78 122.3 246.51 177.84 83.49 95.18 93.96 89.78 88.75 80.71 80.55 81.63 121.21 1989 105.69 145.69 126.7 233.73 280.74 471.48 647.55 196.23 65.21 64.28 71.66 90.63 208.3 1990 151.99 266.13 246.69 346.85 359.95 474.32 105.41 103.49 86.94 71.19 67.28 71.8 196 1991 377.13 482.7 474.17 366.63 500.75 470.35 204.57 136.52 119.61 78.04 81.28 208.19 291.66 1992 481.94 500.43 748.3 544.82 199.6 161.12 94.47 95.08 89.09 93.21 95.48 150.72 271.19 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 165.88 199.65 218.59 210.22 263.9 171.09 106.32 69.57 60.94 56.87 73.41 121.63 143.17 Std Dev 159.51 147.47 169.83 143.7 249.87 142.99 110.56 53.77 49.03 46.8 92.1 118.91 78.77