Country= U.S.A. Station= BUFFALO GAP SD River= CHEYENNE R Area= 25406.39 Lat= 43.5 Lon= -103.07 Source= USGS PointID= 6402600 Area Units= km2 Discharge Units= m3/sec Starting Year= 1940 Ending Year= 1993 Total Years= 54 Total Usable Years= 53 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1940 54.76 82.52 448.32 1596.04 370.87 211.6 106.26 44.65 90.59 38.32 130.63 409.84 298.7 1941 253.45 108.51 342.53 621.27 94.94 148.14 70.3 65.09 37.52 26.26 71.39 274.59 176.17 1942 205.44 224.92 804.04 617.57 481.83 168.38 222.33 71.82 76.84 217.93 337.76 439.36 322.35 1943 596.32 450.18 614.75 720.12 706.19 320.04 64.59 44.83 22.96 105.6 280.68 76.92 333.6 1944 107.51 172.39 670.02 573.14 604.15 272.12 74.29 31.22 35.81 72.97 60.21 145.94 234.98 1945 212.25 342.23 1393.2 479.32 768.67 298.2 99.14 92.06 173.89 293.19 591.79 403.63 428.96 1946 450.7 142.76 814.8 164.86 795.69 578.53 148.93 122.94 57.91 221.41 135.6 121.36 312.96 1947 488.87 257.24 328.5 554.82 694.13 334.68 219.35 111.7 99.8 35.35 152.94 162.38 286.65 1948 149.16 384.43 744.49 963.72 545.83 164.9 138.66 74.27 29.65 42.2 209.55 376.84 318.64 1949 721.81 505.52 314.62 511.22 326.36 96.05 40.16 33.8 44.6 46.28 74.68 302.33 251.45 1950 639.43 455.2 624.11 704.77 366.81 263.79 106.33 124.13 116.42 255.62 906.06 706.07 439.06 1951 615.68 718.65 714.32 766.35 260.61 278.43 125.91 41.68 26.55 23.31 81.9 287.99 328.45 1952 870.45 487.03 769.7 764.18 630.56 148.46 51.14 57.93 45.8 28.18 167.29 361.39 365.18 1953 425.06 346.08 614.72 522.07 692.1 423.62 58.2 51.75 30.24 25.04 64.53 173.17 285.55 1954 126.78 340.31 662.68 513.53 495.15 249.64 57.69 43.29 38.19 109.39 110.76 305.27 254.39 1955 381.65 259.71 927.15 354.93 173.37 123.93 45.17 87.7 44.93 454.05 387.55 163.1 283.6 1956 89.02 426.22 856.45 708.49 527.81 270.95 311.49 317.45 166.05 151.78 417.3 537.49 398.38 1957 341.84 349.56 456.73 1021.49 240.17 98.06 62.03 28.95 28.23 31.58 64.58 355.18 256.53 1958 239.63 149.7 515.32 998.27 568.44 201.32 238.2 187.22 129.54 114.26 166.82 142.96 304.31 1959 406.76 407.46 523.25 680.17 343.39 91.97 59.51 39.53 36.71 160.35 378.95 516.34 303.7 1960 379.32 359.78 255.84 860.05 780.63 381.13 118.84 72.03 104.82 51.31 64.61 48.9 289.77 1961 54.4 528.77 752.5 807.88 409.15 199.12 113.69 94.54 52.16 31.57 104.98 118.92 272.31 1962 231.19 192.67 682.92 993.45 195.14 71.76 30.68 28.6 31.71 122.68 186.67 123.52 240.92 1963 163.6 90.51 930.99 365.9 313.2 172.64 52.41 30.64 35.1 18.65 49.89 139.85 196.95 1964 295.87 182.29 1255.82 613.06 349.32 75.67 42.28 47.27 17.03 19.03 21.57 78.36 249.8 1965 210.32 383.38 359.94 578.04 285.22 82.4 29.22 31.49 34.31 80.63 94.14 110.11 189.93 1966 176.28 453.54 592.77 284.22 589.27 110.46 31.24 27.83 42.4 48.14 174.86 331.61 238.55 1967 125.01 263.33 773.11 519.62 575.55 169.78 132.23 158.99 110.14 317.66 372.17 356.14 322.81 1968 126.7 299.48 392.51 282.75 486.64 432.94 112.81 44.59 68.58 48.53 312.37 277.14 240.42 1969 195.89 215.49 174.68 496.34 345.97 132.94 108.25 125.06 43.13 41.48 224.22 248.33 195.98 1970 134.83 491.23 429.37 1087.18 394.39 159.25 127.02 88.6 85.28 224.52 626.28 420.37 355.69 1971 211.14 547.83 778.63 517.62 307.85 94.13 56.65 53.77 95.26 84.19 122.37 442.93 276.03 1972 440.37 184.5 927.69 728.03 465.86 1328.21 569.79 86.39 60.63 53.29 370.63 799.45 501.24 1973 310.36 524.66 627.94 510.83 505.96 326.82 149.53 172.86 138.66 156.91 345.06 729.98 374.96 1974 582.78 363.69 602.79 714.87 372.32 164.11 234.86 74.35 220.16 94.2 222.25 454.73 341.76 1975 451.99 764.69 632.29 308.5 430.03 426.79 158.52 76.83 681.9 435.63 318.81 331.24 418.1 1976 381.18 816.99 456.91 275.51 193.04 360.9 175.56 131.77 71.49 445.15 257.58 206.76 314.4 1977 89.7 250.81 962.05 710.4 202.38 107.77 277.8 169.13 254.22 494.61 658.9 667.24 403.75 1978 605.69 224.27 833.42 766.54 814.13 264.54 91.47 118.91 112.46 108.47 129.34 340.2 367.45 1979 736.36 289.64 1193.79 535.09 311.93 189.55 99.36 175.66 235.6 496.26 483.01 367.36 426.13 1980 210.37 92.66 564.94 895.01 365.86 160.96 89.01 84.58 40.65 53.48 94.5 157.87 234.16 1981 49.6 934.87 287.97 378.05 466.47 320.6 168.06 79.71 85.66 228.35 239.57 178.1 284.75 1982 242.28 454.08 808.89 589.82 247.42 654.63 150.85 68.09 48.71 43.76 116.85 241.04 305.54 1983 153.01 288.22 435.63 792.78 633.66 350.54 176.15 58.56 37.68 59.03 236.01 640.42 321.81 1984 124.78 811.33 415.66 946.54 610.46 511.49 346.59 322.38 80.39 60.05 188.93 568.53 415.59 1985 270 352.14 545.42 496.68 191.98 180.31 90.5 64.19 82.74 55.69 541.11 437.54 275.69 1986 285.97 516.32 722.84 448.74 184.28 333.52 185.55 107.71 59.1 167.09 563.13 527.47 341.81 1987 221.16 138.2 430.89 675.7 255.37 159.17 213.09 66.33 260.02 195.44 186.53 343.59 262.12 1988 183.16 465.27 423.83 246.44 469.79 92.15 44.85 116.66 111.68 71.02 251.11 141.88 218.15 1989 193.88 272.06 401.72 550.11 778.95 658.31 231.95 61.63 64.37 143.42 203.29 102.59 305.19 1990 317.33 682.79 248.64 411.85 386.47 233.94 360.63 209.02 202.66 705.18 337.16 635.97 394.3 1991 522.91 433.58 615.58 380.03 204.17 57.98 45.56 31.67 37.39 42.5 68.43 178.01 218.15 1992 220.74 180.52 472.5 530.19 201.22 150.38 291.93 266.11 229.26 173.21 486.12 352.98 296.26 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 307.07 370.95 625.1 625.17 434.17 261.47 139.75 94.68 97.5 147.63 253.65 327.57 307.06 Std Dev 194.57 197.48 253.13 253.95 189.93 206.16 102.92 67.96 103.2 150.79 186.39 186.83 70.91