Country= U.S.A. Station= IRWIN ID River= SNAKE RIVER Area= 13531.95 Lat= 43.35 Lon= -111.22 Source= USGS PointID= 13032500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1904 Ending Year= 1993 Total Years= 90 Total Usable Years= 83 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1904 66.77 111.03 155.07 452.82 214.24 221.32 170.59 60.33 93.57 37.33 23.58 17.08 135.31 1905 12.7 47.82 360.97 237.73 363.65 378.05 315.73 187.04 100.23 158.68 162 89.56 201.18 1906 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1907 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1908 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1909 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1910 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1911 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1912 32.52 58.64 333.23 525.92 176.93 97.48 46.85 31.59 48.4 73.69 41.81 24.47 124.29 1913 20.63 17.84 282.91 258.63 438.82 223.36 47.75 30.46 18.2 30.8 17.16 24.85 117.62 1914 25.18 47.89 61.38 48.64 116.32 177.15 109.34 27.77 259.25 161.62 51.38 21.67 92.3 1915 38.1 448.82 508.24 289.39 251.97 653.99 657.08 478.89 297.11 383.98 202.61 87.97 358.18 1916 169.98 245.59 396.33 315.2 430.58 188.53 60.19 23.13 15.41 13.33 20.78 12.91 157.66 1917 11.33 11.12 271.72 257.12 288.47 759.47 123.85 38.65 45.69 16.42 13.05 7.55 153.7 1918 3.68 68.59 76.78 36.88 105.73 475.06 66.65 53.41 53.73 20.73 68.58 69.71 91.63 1919 59.83 101.74 354.62 511.32 458.53 589.35 201.84 61.22 56.54 124.7 187.51 59.01 230.52 1920 41.93 63.18 435.26 436.96 433.97 158.25 369.43 121.22 159.26 51.99 105.05 71.81 204.03 1921 67.69 147.95 107.3 200.55 208.52 254.02 84.52 65.39 305.88 103.04 66.52 43.01 137.87 1922 35.53 83.73 214.96 351.61 193.29 93.57 156.92 108.68 58.17 26.76 87.18 27.06 119.79 1923 24.62 16.84 211.69 169.98 104.21 121.91 65.73 54.97 78.53 182.16 60.1 37.96 94.06 1924 19.78 93.81 306.21 252.62 75.22 343.65 164.08 166 79.84 58.46 30.98 22 134.39 1925 12.72 49.66 84.6 66.78 26.09 191.01 87.91 40.48 17.39 97.43 40.19 24.7 61.58 1926 59.05 120.04 101.99 72.17 26.61 162.83 34.52 44.01 505.42 230.44 113.55 73.95 128.72 1927 39.46 205.39 217.08 537 362.85 260.13 52.97 30.78 20.75 71.75 19.02 9.37 152.21 1928 7.28 106.67 142.75 119.15 79.67 107.92 127.22 155.91 130.02 90.09 279.87 192.26 128.23 1929 45.86 48.34 629.5 496.26 297.79 155.48 99.04 39.14 29.47 29.26 50.19 18.28 161.55 1930 12.61 107 77.11 57.16 160.93 239.51 45.86 15.02 10.52 11.01 9.98 12.15 63.24 1931 6.14 11.82 19.53 65.02 20.28 115.19 43.26 13.7 71.59 152.17 356.34 260.8 94.65 1932 449.85 198.42 396.89 252.7 146.22 380.71 165.83 199.28 55.46 25.61 42.48 70.81 198.69 1933 72.98 49.82 67.12 359.74 180 40.15 27.81 22.24 33.09 14.73 9.79 6.6 73.67 1934 11.42 17.75 14.95 55.72 13.74 23.25 17.57 5.69 16.38 15.93 32.14 29.96 21.21 1935 43.15 103.66 238.33 67.63 180.44 573.15 428.59 47.06 35.77 23.19 100.3 48.73 157.5 1936 37.01 78.64 558.94 142.7 114.85 99.57 15.6 7.07 69.91 45.77 18.12 10.72 99.91 1937 17.07 175.3 402.28 148.54 248.55 242.05 63.96 61.94 23.13 12.6 11.56 5.63 117.72 1938 11.41 33.69 106.67 105.42 211.48 189.97 125.29 137.65 296.78 111.2 82.57 41.64 121.15 1939 35.47 35.82 438.11 158.64 65.91 63.64 67.57 79.69 11.85 7.91 7.77 6.42 81.57 1940 2.88 3.46 54.24 62.04 49.73 38.65 16.89 169.41 78.11 16.12 43.23 44.82 48.3 1941 65.51 116.82 133.84 144.38 74.98 269.56 87.1 27.87 96.2 266.34 378.51 181.18 153.52 1942 203.86 186.15 258.19 198.28 313.36 256.17 319.73 155.47 149.65 102.77 62.43 60.72 188.9 1943 37.91 190.3 208 174.98 317.31 372.81 260.95 310.48 116.99 42.43 49.44 41.47 176.92 1944 31.53 60.76 196.33 515.4 916.65 828.37 214.17 151.06 98.59 64.94 45.46 46.44 264.14 1945 26.98 165.33 552.36 615.42 664.81 687.63 195.19 193.62 80.64 56.3 31.47 37.63 275.62 1946 244.75 163.04 497.49 229.68 212.57 530.72 207.04 112.97 110.8 128.73 116.27 64.65 218.23 1947 46.95 84 206.9 586.66 307.57 1667.49 499.77 57.66 26.76 17.37 35.04 45.7 298.49 1948 22.57 86.05 506.59 172.54 154.9 44.1 84.76 35.11 21.62 9.63 24.43 15.67 98.16 1949 57.06 142.39 479.85 304.7 109.22 177.9 71.62 38.5 26.63 14.64 11.61 10.48 120.38 1950 15.44 106.21 263.93 102.11 248.45 387.33 114.3 51.05 22.91 32.68 15.1 9.83 114.11 1951 7.67 83.39 201.96 975.33 755.29 664.92 514.34 242.48 218.64 142.48 114.22 72.67 332.78 1952 87.91 189.32 474.06 562.66 274.26 339.48 339.82 121.44 46.73 19.46 57.6 33.95 212.22 1953 28.99 171.37 238.46 280.69 248 350.48 165.97 86.98 22.62 13.19 12.06 12.54 135.95 1954 6.56 12.97 32.9 77.23 116.66 531.39 200.61 178.23 182.08 214.09 99 54.54 142.19 1955 43.18 93.9 158.35 179.69 149.06 82.38 112.22 17.8 9.64 14.37 6.86 4.54 72.67 1956 4.75 7.45 16.74 20.09 17.99 25.45 12.69 62.91 17.17 7.02 7.85 5.01 17.09 1957 3.73 8.71 15.23 72.02 86.9 189.9 79.65 22.74 19.65 14.43 26.06 40.21 48.27 1958 25.95 45.77 89.17 59.29 55.95 124.05 427.06 116.2 78.94 22.03 34.46 11.59 90.87 1959 6.54 100.47 319.29 246.11 396.26 359.46 200.37 78.91 62.9 82.47 47.63 67.89 164.03 1960 216.74 86.37 216.94 846.7 615.56 336.07 171.21 77.87 75.08 41.83 50.42 21.28 229.67 1961 16.12 137.87 511.37 457.73 148.01 199.46 90.31 95.33 160.04 178.55 353.77 108.96 204.79 1962 83.85 260.52 517.47 781.45 283.46 396.59 284.49 107.7 246.96 111.9 61.89 27.93 263.68 1963 22.84 39.33 317.46 112.48 325.59 152.01 124.77 135.46 37.3 20.97 20.67 11.19 110.01 1964 12.48 16.63 23.62 133.12 232.11 249.26 106.8 63.15 153.71 74.72 35.44 27.05 94.01 1965 43.18 111.49 389.54 1150.99 302.47 336.88 121.61 28.82 306.78 271.73 111.81 121.77 274.76 1966 94.13 105.01 123.4 208.15 283.57 352.17 112.89 37.64 18.16 13.27 13.84 10.03 114.36 1967 11.41 14.88 37.65 124.29 52.86 688.25 163.37 39.34 25.03 44.46 35.36 16.56 104.45 1968 12.79 15.84 23.02 94.76 39.59 39.72 88.71 35.48 24.03 139.74 149.36 59.47 60.21 1969 53.77 60.17 219.52 593.71 404.38 495.83 516.27 499.11 190.98 59.26 62.48 33.18 265.72 1970 30.61 55.25 173.99 236.8 297.17 144.36 40.8 113.02 132.94 146.78 102.67 102.4 131.4 1971 37.25 276.05 546.29 280.99 158.3 196.31 128.29 29.93 13.77 11.25 49.62 72.97 150.08 1972 31.97 34.9 140.11 105.2 314.55 253.85 169.93 278.85 224.2 166.59 401.53 164.53 190.52 1973 371.6 491.8 536.67 850.45 808.77 566.43 589.36 518.84 222.31 561.96 332.94 316.8 513.99 1974 278.88 265.04 386.89 364.74 488.98 551.62 471.16 154.35 30.76 18.13 60.6 57.05 260.68 1975 43.29 39.76 223.56 480.16 338.49 480.26 277.04 50.98 62.56 18.66 26.89 62.11 175.31 1976 23.29 48.13 194.32 357.27 412.15 218.44 87.51 26.3 10.24 10.84 9.42 10.9 117.4 1977 8.23 9.37 35.03 34.66 19.7 8.49 7.3 98.69 190.62 153.76 195.28 82.84 70.33 1978 37.53 23.56 260.61 396.99 357.98 185.63 350.19 76.39 234.38 131.26 106.03 83.38 186.99 1979 36.29 39.99 457.16 696.22 516.74 483.94 318.57 302.22 331.44 123.26 206.46 140.42 304.39 1980 95.46 83.58 148.4 194.08 78.05 400.86 81.67 77.75 91.35 36.16 33.98 58.52 114.99 1981 16.99 42.68 33.14 99.17 68.38 161.46 364.19 116.48 56.83 51.6 92.37 75.05 98.2 1982 31 172.99 485.38 383.38 464.02 494.04 689.11 386.12 178.14 280.88 324.01 410.87 358.33 1983 306.55 415.25 628.77 707.74 535.47 626.75 615.21 516.4 98.15 108.88 382.89 222.54 430.38 1984 106.69 430.03 382.63 629.3 584.7 874.9 866.87 511.08 54.37 77.2 108.36 114.58 395.06 1985 97.6 164.14 243.29 206.22 242.83 142.52 70.93 27.4 87.07 214.28 128.32 75.67 141.69 1986 77.78 95.27 474.93 423.12 584.54 539.34 547.61 343.25 282.4 424.21 547.08 218.88 379.87 1987 104.96 89.5 210.06 452.79 245.05 210.23 259.32 189.07 317.07 85.54 93.34 192.93 204.15 1988 76.34 104.63 133.16 125.52 131.66 61.08 19.56 17.86 14.11 12.9 13.82 15.12 60.48 1989 21.3 23.08 57.12 38.68 61.17 70.58 45.74 14.95 77.89 14.59 17.12 12.09 37.86 1990 14.16 23.84 235.28 104.13 337.87 595.79 702.08 521.76 116.83 36.91 35.05 53.32 231.42 1991 29.92 174.2 377.69 633.14 618.86 810.24 668.74 385.84 30.54 31.83 127.02 310.96 349.92 1992 204.8 224.1 447.21 460.11 341.16 183.61 315.77 268.55 287.79 159.68 398.52 406.82 308.18 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 61.59 109.64 261.06 305.95 266.99 325.48 212.47 129.94 106.85 90.34 99.03 72.15 170.12 Std Dev 82.59 101.51 172.11 241.54 195.04 260.63 196.33 136.8 101.11 100.1 115.11 85.51 99.27