Country= U.S.A. Station= ANGOSTURA DAM SD River= CHEYENNE R Area= 23567.60 Lat= 43.34 Lon= -103.44 Source= USGS PointID= 6401500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1910 Ending Year= 1993 Total Years= 84 Total Usable Years= 76 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1910 937.66 1243.52 1513.22 590.88 427.22 219.48 144.91 113.83 110.34 160.24 804.4 1219.73 623.79 1911 1202.65 775.99 560.49 554.64 680.25 386.3 190.14 119.06 169.27 179.37 836.11 597.49 520.98 1912 2173.38 1595.32 723 495.26 738.71 578.33 265.27 164.33 265.35 241.57 1138.15 813.52 766.02 1913 1572.32 676.17 790.96 1443.7 753.96 613.25 407.64 164.88 159.8 328.24 579.03 566.25 671.35 1914 1737.2 1094.96 1110.48 837.71 400 313.77 156.68 107.77 205.74 366.28 459.49 489.12 606.6 1915 962.41 793.58 562.69 474.52 590.16 348.53 170.69 114.19 99.16 110.06 1179.08 1799.68 600.4 1916 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 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 2767.03 689.22 763.19 682.06 552.09 475.25 284.22 158.04 120.84 198.59 229.23 930.9 654.22 1924 706.65 1161.68 467.96 520.37 289.29 162.59 119.72 92.88 100.37 170.69 1849.01 826.31 538.96 1925 1835.22 2210.45 586.71 726.71 578.4 367.37 161.07 111.68 103.21 93.77 198.89 606.71 631.68 1926 504.86 1949.32 575.75 305.54 274.9 150.31 98.26 100.76 126.17 212.51 770.22 1158.8 518.95 1927 1448.92 2030.43 885.87 598.72 625.9 513.29 202.23 115.05 167.91 414.76 1275.96 970.45 770.79 1928 1351.63 623.85 1220.74 1365.92 560.77 202.39 128.59 103.3 101.71 119.29 265.84 538.02 548.5 1929 799.64 641.58 768.21 949.19 684.27 520.56 170.78 107.96 96.05 93.22 92.31 935.88 488.3 1930 425.39 1660.69 538.11 402.76 448.87 304.79 124.35 86.36 85.81 112.46 255.8 315.59 396.75 1931 545.04 412.72 880.29 1317.4 304.14 226.62 127.91 83.54 75.95 144.97 591.38 894.45 467.03 1932 1325.14 737.12 1900.16 1063.87 768.21 514.9 210.43 122.09 94.24 136.86 665.91 942.86 706.82 1933 1417.31 1040.45 1127.02 849.04 939.67 1057.83 335.11 144.35 168.72 166.73 275.32 1662.47 765.33 1934 1472.48 465.41 600.75 618.16 295.02 171.42 112.07 90.86 83.44 244.19 1048.45 1489.57 557.65 1935 1216.17 926.57 938.02 870.09 609.55 341.45 176.66 104.96 96.19 124.69 240.64 384.52 502.46 1936 2275.04 911.61 834.71 780.79 715.05 399.83 178.74 110.42 104.99 91.01 88.92 283.64 564.56 1937 306.53 1244.23 1148.39 1795.49 921.31 814.96 283.27 135.7 117.04 193.57 1305.84 1530.4 816.39 1938 1516.51 1393.1 1692.35 1077.65 684.27 296.65 146.34 102.85 98.01 106.36 448.94 701.11 688.68 1939 721.44 1205.6 1153.78 602.11 349.76 276.21 149.86 93.75 93.46 125.93 112.93 590.38 456.27 1940 616.8 1667.97 1229.14 630.53 356.44 143.42 93.05 75.13 88.84 121.64 535.44 806.58 530.42 1941 970.82 453.17 314.74 306.44 437.92 286.12 142.2 97.54 175.29 193.53 805.57 1717.29 491.72 1942 902.49 1016.28 519.48 372.56 572.92 456.38 209.81 115.28 98.83 95.28 1342.74 2315.42 668.12 1943 2089.34 1519.41 654.67 1209.32 543.78 596.54 261.74 154.48 129.82 304.63 555.15 501.56 710.04 1944 559.85 733.31 555.84 733.98 420.92 258.6 135.99 90.45 94.77 102.19 243.34 254.3 348.63 1945 886.41 1531.04 1131.4 1068.78 998.22 348.18 141.68 98.16 117.57 126.37 962.68 1593.61 750.34 1946 1861.07 1024.67 1316.19 642.7 539.67 379.54 206.23 117.76 124.64 275.74 1143.26 1817.86 787.44 1947 881.39 1162.41 869.24 974.39 323.33 391.16 210.77 141.95 122.55 947.01 1465.97 819.37 692.46 1948 1792.92 1286.86 1006.72 930.97 867.05 516.5 220.95 149.25 157.4 270.84 667.22 1701.58 797.36 1949 505.78 1839.8 1039.96 777.77 1038.41 373.75 181.63 121.7 137.54 219.05 376.08 757.53 614.08 1950 1623.39 1832.51 1664.67 1017.81 821.47 736.53 290.19 148.57 140.66 704.04 2039.86 1589.04 1050.73 1951 2030.51 1624.38 1100.98 717.74 620.87 264.42 155.59 124.54 124.42 608.31 815.41 1784.15 830.94 1952 1046.08 1621.78 970.72 922.76 666.82 428.15 318.14 151.13 143.68 125.23 113.08 476.94 582.04 1953 2601.6 2054.09 954.92 653.08 910.89 690.46 258.03 170.36 168.72 253.57 1060.84 2270.57 1003.93 1954 1756.93 1691.13 715.42 826.48 360.17 443.73 245.82 188.18 242.08 307.92 443.05 605.89 652.23 1955 978.58 608.21 802.83 1259.45 713.04 647.42 294.8 181.49 214.13 516.44 1419.72 3085.73 893.49 1956 2702.26 929.29 1235.17 941.07 794.79 563.04 252.97 177.83 206.48 348.5 685.08 1253.71 840.85 1957 559.85 942.75 1855.04 816.66 515.73 300.71 171.36 165.65 197.96 272.24 376.6 1574.43 645.75 1958 1654.53 2091.51 691.67 852.15 429.23 384.83 207.5 166.45 211.33 252.62 1180.77 879.29 750.16 1959 1769.45 1256.77 685.18 649.31 624.25 317.24 174.37 154.96 260.22 516.99 450.82 377.83 603.12 1960 504.09 1247.32 1297.38 1218.29 1084.18 439.32 179.66 168.35 185.72 267.45 1298.43 998.77 740.75 1961 739.44 2586.86 1746.61 617.5 670.2 319.59 181.78 165.46 186.96 309.62 769.46 1576.62 822.51 1962 797.72 627.83 1046.82 890.76 762.09 376.47 185.28 182.22 194.98 519.93 881.85 1068.28 627.85 1963 345.88 1185.88 628.82 1254.44 1093.4 279.95 219.89 172.11 200.41 313 1163.07 661.98 626.57 1964 1969.22 814.85 780.82 544.54 547.43 566.91 235.53 194.62 220.48 263.91 611.55 3304.05 837.83 1965 2716.33 1219.05 394.89 422.55 361.73 223.07 156.78 164.1 184 304.77 502.66 566.67 601.38 1966 1967.94 521.94 1085.82 594.47 377.53 193.93 153.32 151.28 217.87 311.7 903.39 1262.3 645.12 1967 1380.32 936.18 558.67 427.4 397.26 261.47 168.96 154.57 203.69 397.68 591.64 844.58 526.87 1968 981.23 1300.92 586.62 351.01 295.64 257.68 169.85 248.39 293.72 690.57 1480.13 1893.4 712.43 1969 1677.1 976.13 593.93 529.62 624.8 501.08 300.32 248.38 309.74 389.7 504.33 1190.14 653.77 1970 2050.79 1615.38 521.4 388.32 541.59 249.62 200.17 213.22 255.95 360.49 869.71 1319.94 715.55 1971 2183.24 1119.74 1292.72 943.43 681.62 550.67 267.4 270.15 359.29 458.92 953.91 2042.48 926.96 1972 1957.53 1443.39 2086.14 934.27 714.14 446.18 210.94 242.92 350.28 310.04 455.9 1068.73 851.71 1973 1066.09 363.97 459.01 370.5 218.06 185.16 171.54 186.32 227.88 386.6 1993.42 2433.07 671.8 1974 2220.6 1346.98 1453.48 1097 595.57 622.79 263.66 211.67 291.77 390.77 468.84 1270.7 852.82 1975 1699.48 1043.89 1105.19 565.11 652.39 389.98 244.57 234.81 333.91 509.25 947.11 1749.72 789.62 1976 1928.94 773.84 736.15 858.48 582.78 340.96 219.41 232.21 319.49 349.85 346.55 191.98 573.39 1977 180.57 150.44 461.29 290.46 446.26 268.49 172.36 190.87 267.87 369.46 1091.9 2598.95 540.74 1978 1380.86 746.05 327.04 403.32 390.23 233.65 170.39 200.34 377.72 349.3 368.69 987.9 494.62 1979 532.45 1191.22 862.21 775.04 644.71 217.97 185.43 185.94 258.87 406 663.28 1001.05 577.01 1980 1591.23 532.07 647.64 594.56 296.18 296.27 183.81 182.5 275.95 312.67 526.41 1728.52 597.32 1981 679.43 732.3 434.62 605.89 389.19 562.36 209.77 204.49 299.13 453.99 844.13 2505.96 660.11 1982 1648.42 1707.11 886.87 859.42 454.26 328.14 220.7 221.16 301.57 501.58 733.6 1939.71 816.88 1983 1403.79 1611.84 1184.11 897.18 527.98 365.1 351.4 247.88 353.49 374.61 1135.42 1552.14 833.74 1984 1108.47 1190.1 1014.84 861.31 844.03 875.28 263.99 195.72 345.16 508.88 1920.46 1188.77 859.75 1985 523.32 612.46 465.68 603.34 404.11 444.86 187.64 201.2 320.52 494.54 827.23 740.44 485.45 1986 1044.99 1780.43 1087.37 353.11 490.52 239.14 182.41 182.17 325.74 391.69 1089.26 897.19 672 1987 960.86 1061.69 641.43 343.56 228.04 180.63 176.36 174.94 216.04 224.71 239.11 1040.2 457.3 1988 1244.4 540.46 510.98 718.21 694.13 527.43 201.01 183.77 232.44 316.09 1087.09 767.94 585.33 1989 1265.31 682.14 1173.33 786.27 386.57 288.13 179.86 196.23 271.68 334.87 476.39 465.68 542.21 1990 1123.43 1076.86 651.11 507.11 502.07 464.99 186.47 190.52 231.84 381 962.78 855.81 594.5 1991 841.01 616.3 780 641.57 773.97 325.45 188.76 183.22 258.97 319.98 885.19 1127.93 578.53 1992 533.82 663.5 319.14 507.77 254.37 160.18 162.46 162.37 174.29 231.08 574.84 1122.08 405.49 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 1306.04 1136.71 901.04 749.77 574.67 391.65 200.92 157.68 195.37 305.29 783.71 1189.4 657.69 Std Dev 631.31 497.1 393.38 299.23 210.17 176.51 59.4 46.55 83.35 161.55 452.64 658.31 141.99