Country= U.S.A. Station= BLACKFOOT ID River= SNAKE RIVER Area= 25768.97 Lat= 43.19 Lon= -112.37 Source= USGS PointID= 13062500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1918 Ending Year= 1993 Total Years= 76 Total Usable Years= 75 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1918 3.34 54.28 75.04 35.66 83.84 476.63 53.63 46.45 39.36 22.82 67.23 64.78 85.26 1919 54.33 91.99 336.06 494.03 445.46 590.07 188.28 56.43 51.47 108.38 166.51 54.97 219.83 1920 39.99 59.81 417.79 419.82 419.87 159.05 358.05 127.65 163.16 53.32 108.26 72.84 199.97 1921 64.29 151.73 102.64 174.56 193.82 240.85 81.43 59.28 306.02 97.03 59.37 38.97 130.83 1922 32.12 74.29 196.76 329.42 192.6 90.49 141.84 101.96 57.64 27.61 83.72 25.61 112.84 1923 23.38 16.75 208.04 163.06 101.28 123.79 62.53 56.85 79.9 176.9 57.58 38.24 92.36 1924 18.43 84.33 294.38 227.23 71.61 325.69 152.04 154.88 74.7 53.74 28.67 19.31 125.42 1925 11.17 46.4 74.04 50.09 27.72 169.94 70.08 39.36 14.98 75.75 29.03 17.61 52.18 1926 39.72 116.24 94.51 53.04 26.37 141.79 28.19 38.9 405.73 204.06 90.54 62.42 108.46 1927 35.88 199.14 190.83 492.11 332.59 240.75 54.28 33.53 23.04 50.04 21.29 8.87 140.2 1928 6.92 96.73 143.67 115.4 77.99 81.98 101.07 154.96 126.69 82.5 236.05 175.57 116.63 1929 48.55 48.9 646.83 443.58 286.63 124.14 82.23 30.62 20.83 17.67 31.26 18.24 149.96 1930 16.24 93.32 57.55 50.23 155.86 220.22 36.58 14.38 13.9 9.25 9.86 11.77 57.43 1931 5.84 10.08 12.71 43.3 11.69 67.42 24.41 12.11 56.99 124.29 323.41 217.66 75.83 1932 413.59 188.44 378.94 220.15 124.49 322.81 130.4 153.43 46.42 22.73 36.31 58.19 174.66 1933 61.74 44.68 60.59 339.2 146.13 38.73 29.96 22.25 27.15 13.44 8.44 5.73 66.5 1934 10.87 16.72 13.4 52.41 12.8 24.5 18.29 4.73 16.21 13.15 32.13 27.44 20.22 1935 35.84 107.58 227.71 70.82 159.46 510.16 413.42 44.95 37.88 25.33 97.83 47.77 148.23 1936 34.43 64.41 547.98 138.11 119.14 98.04 14.71 7.4 65.54 31.41 16.46 9.16 95.57 1937 15.75 113.94 366.95 134.62 221.05 219.85 62.67 64.58 21.44 12.79 11.44 5.56 104.22 1938 10.98 33.63 111.37 97.28 212.29 184.07 133.53 141.32 305.98 109.16 80.36 39.49 121.62 1939 32.46 30.5 408.98 143.1 64.16 64.22 69.93 66.32 10.09 6.73 6.39 5.46 75.69 1940 2.49 2.9 52.26 54.09 43.55 38.41 13.53 170.22 71.6 14.05 43.01 43.66 45.81 1941 63.29 111.83 130.18 137.45 67.49 255.4 81.04 25.23 91.37 238.26 355.83 169.77 143.93 1942 198.03 171.22 250.91 184.09 304.65 235.23 299.62 144.04 138.39 96.8 57.01 48.99 177.41 1943 31.96 184.6 194.08 156.3 266.4 347.15 249.13 302.11 111.05 40.02 48.38 38.9 164.17 1944 31.86 56.85 179.56 422.53 874.45 763.06 200.85 139.94 89.25 55.98 37.06 36.38 240.65 1945 23.31 141.46 518.11 555.99 586.06 626.18 180.91 181.28 65.92 43.1 28.61 31.04 248.5 1946 224.22 160.75 459.41 216.73 208.28 446.93 186.39 112.53 107.29 125.71 111.85 60.61 201.73 1947 44.68 78.33 199 566.38 296.75 1529.59 465.4 54.93 22.76 16.29 32.99 38.58 278.81 1948 20.47 81.86 466.15 166.4 139.18 43.31 76.3 34.19 17.56 8.49 24.91 15.24 91.17 1949 50.23 125.28 450.19 286.28 102.02 144.54 59.07 34.88 21.5 14.78 11.97 10.07 109.23 1950 11.25 88.51 246.65 78.94 234.19 337.6 105.74 48.63 21.31 32.97 15.04 8.96 102.48 1951 7.57 69.47 191.51 915.87 682.35 591.59 480.24 222.75 208.9 135.66 97.92 67.83 305.97 1952 84.46 183.13 428.87 517.73 257.79 326.81 323.33 101.53 44.17 17.7 56.01 31.51 197.75 1953 26.84 158.54 209.54 249.98 222.95 325.38 147.83 82.72 20.18 10.95 11.06 10.36 123.03 1954 5.53 12.31 29.49 68.46 103.03 522.77 179.77 186.64 166.21 186.58 90.11 53.02 133.66 1955 32.66 77.45 137.84 156.47 129.62 73.33 103.22 14.88 9.85 10.49 6.31 4.01 63.01 1956 4.1 6.12 16.05 20.29 19.61 23.49 13.08 52.3 17.8 5.93 7.86 5.51 16.01 1957 4.24 9.35 15.21 64.73 78.65 175.75 71.87 21.72 19.74 14.33 26.94 36.71 44.94 1958 25.49 35.67 81.41 62.58 50.9 106.42 398.96 94.4 74.63 20.88 25.77 10.81 82.33 1959 6.92 99.46 264.74 216.75 366.8 341.81 192.35 55.94 45.81 50.16 46.23 58.5 145.46 1960 204.07 81 172.84 805.34 587.08 308.53 151.38 73.76 69.29 40.8 47.19 20.38 213.47 1961 15.53 128.65 520.56 453.23 147 200.68 75.93 89.9 140.72 165.78 314.46 96.32 195.73 1962 76.46 232.71 501.25 763.33 280.12 377.77 283.04 97.68 246.76 104.81 59.12 29.19 254.35 1963 20.38 34.59 286.31 116.31 302.43 147.31 120.44 122.27 32.3 22.6 20.54 11 103.04 1964 11.74 15.42 22.17 119.11 217.79 234.68 104 68.37 156.64 70.8 35.9 25.49 90.18 1965 40.58 97.86 361.21 1076.52 309.68 336.45 119.73 29.41 274.96 262.92 106.82 116.17 261.03 1966 88.2 103.01 123.42 209.1 269.76 357.56 103.58 35.8 15.33 11.67 12.78 9.2 111.62 1967 11.53 13.53 36.4 89.94 42.49 663.82 168.69 35.78 22.67 22.24 18.86 12.72 94.89 1968 11.21 13.58 19.3 87.45 35.93 45.26 91.42 33.95 23.31 143.8 133.06 52.41 57.56 1969 49.35 55.75 221.06 585.01 414.61 496.11 473.62 484.59 175.95 55.55 60.51 34.87 258.92 1970 28.55 44.75 173.63 217.03 283.13 132.15 38.58 76.1 79.96 124.23 95.81 81.33 114.6 1971 34.44 265.82 526.82 274.99 154.67 186.71 123.27 26.98 12.42 10.39 46.98 44.4 142.32 1972 23.35 25.87 133.35 87.61 304.27 248.05 170.29 274.67 219.1 163.92 390.97 156.29 183.15 1973 350.67 466.27 474.97 695.84 702.35 543.12 554.92 492.08 198.57 520.67 326.44 306.59 469.37 1974 248.28 256.37 363.75 358.17 431.3 526.51 441.4 138 29.29 16.95 58.6 53.06 243.47 1975 38.74 37.26 211.52 465.34 335.95 471.29 264.32 51.19 54.91 17.4 28.72 55.78 169.37 1976 24.24 47.12 173.76 303.58 414.29 236.39 81.25 22.75 10.37 9.99 9.25 10.8 111.98 1977 8.22 9.28 25.23 27.24 14.68 7.99 6.74 84.32 167.37 153.91 188.36 82.05 64.62 1978 35.35 24.45 254.98 374.2 326.41 191.82 306.86 62.82 208.73 120.05 99.2 75.01 173.32 1979 38.93 36.56 410.3 684.33 528.07 494.23 327.82 313.21 343.94 129.02 220.64 128.83 304.66 1980 86.69 75.55 136.83 192.85 79.19 351.63 79.57 61.47 71 33.05 31.87 48.35 104 1981 15.04 37.48 27.77 65.85 59.73 149.56 337.15 113.46 49.25 42.47 78.11 67.93 86.98 1982 27.02 173.18 434.45 364.46 442.92 473.74 549.05 395.49 157.96 277.04 317.47 384.95 333.14 1983 302.76 395.76 616.01 717.36 535.28 627.79 615.21 498.85 83.6 103.46 360.81 210.34 422.27 1984 96.73 402.74 367.9 637.13 574.84 905.67 915.1 569.78 46.4 70.57 104.06 122.9 401.15 1985 102.59 144.26 226.71 198.89 227.29 137.7 59.34 22.21 87.99 189.98 117.5 70.26 132.06 1986 67.55 83.76 462.72 424.5 520.73 534.15 526.15 318.05 212.23 388.49 545.2 213.94 358.12 1987 100.04 88.25 207.04 440.23 233.25 200.53 260.6 186.93 308.68 83.62 100.18 194.55 200.33 1988 72.79 99.39 134.25 129.91 137.1 63.78 20.4 17.28 16.09 13.21 12.19 15.1 60.96 1989 20.56 20.93 59.25 35.87 62.23 70.18 43.38 19.2 71.39 17.08 19.58 13.55 37.77 1990 15.75 24.48 209.88 106.54 298.48 517.35 642.89 514.46 109.6 36.73 38.07 60.02 214.52 1991 27.7 153.86 414.44 617.41 603.61 859.89 667 370.5 26.66 32.41 126.52 304.29 350.36 1992 207.1 215.1 446.81 443.84 317.18 168.74 293.05 248.56 266.79 164.45 386.68 395.93 296.19 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 58.9 100.05 243.26 287.38 249.54 307.16 202.03 126.17 97.61 81.3 96.66 70.8 160.07 Std Dev 80.21 91.2 169.19 238.11 189.69 251.78 189.26 135.13 93.23 91.33 113.69 84.46 97.51