Country= U.S.A. Station= KEYSTONE, NEBR. River= NORTH PLATTE RIVER Area= 75882.50 Lat= 41.21 Lon= -101.62 Source= USGS PointID= 6690500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1928 Ending Year= 1994 Total Years= 67 Total Usable Years= 65 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1928 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1929 302.74 242.82 919.59 944.56 1105.46 2248.28 1116.97 399.09 322.67 391.23 355.79 224.23 714.45 1930 248.46 453.32 808.59 1012.14 897.1 1100.12 655.22 497.1 426.64 375.98 355.24 249.03 589.91 1931 189.53 285.01 380.82 371.05 462.48 977.79 357.14 256.31 173.27 266.19 205.93 146.38 339.33 1932 184.33 157.39 355.06 790.14 1017.13 1958.69 1229.14 389.95 336.58 328.39 262.46 220.03 602.44 1933 231.64 213.73 802.81 562.47 1110.12 2005.79 710.12 256.79 452.89 264.56 341.22 169.17 593.44 1934 251.38 435.17 538.94 545.48 737.25 805.52 311.39 176.95 129.15 212.96 245.16 155.2 378.71 1935 142.41 233.21 294.04 494.04 475.63 1523.55 1110.12 339.39 223.02 224.79 180.66 235.85 456.39 1936 160.86 177.71 621.33 666.2 861.75 1146.37 482.3 277.68 214.19 235.14 289.31 148.89 440.14 1937 170.68 153.42 345.65 541.52 473.62 1365.35 941.86 270.3 176.32 298.55 211.54 127.04 422.99 1938 179.17 120.09 885.13 318 437.45 1542.43 1642.93 677.69 579.74 427.03 432.97 300.16 628.57 1939 305.73 201.56 1018.96 907.65 894.36 1335.81 764.74 361.45 221.82 250.71 289.17 213.82 563.81 1940 95.27 130.55 175.84 500.74 521.85 861.5 525.05 558.85 306.22 367.02 181.8 208.08 369.4 1941 148.98 165.15 212.93 612.31 567.53 1052.64 571.46 611.65 629.49 493.63 324.23 215.12 467.09 1942 153.83 226.74 465.77 565.49 685.64 1497.88 823.84 535.37 551.71 556.75 458.55 156.47 556.5 1943 168.35 240.49 773.78 1759.62 627.36 1687.6 1522.63 758.9 789.01 793.15 697.16 467.14 857.1 1944 385.48 358.84 391.6 1155.9 570.18 2053.55 1238.82 719.98 572.76 643.62 599.66 443.66 761.17 1945 432.7 315.13 828.5 358.62 401.69 1086.9 1112.68 529.62 693.86 715.87 349.71 172.6 583.16 1946 182.69 187.2 607.17 348.2 468.33 1049.62 840.01 566.16 730.96 687.55 316.3 225.53 517.48 1947 258.14 319.88 814.25 1114.27 1188.22 1641.16 1340.31 1028 899.73 960.95 594.94 364.38 877.02 1948 300.71 260.13 585.89 971.74 891.89 1872.04 1464.08 978.31 865.46 995.21 659.69 226.81 839.33 1949 352.32 350.63 576.84 1300.22 798.63 1104.65 778.17 728.48 728.03 732.13 431.74 212.65 674.54 1950 242.34 240.8 312.77 1329.86 718.52 1188.09 1073.03 824.76 833.94 883.22 573.61 384.47 717.12 1951 398.26 374.29 392.6 1283.23 893.54 1201.11 964.97 1030.19 1056.7 1098.79 911.05 355.42 830.01 1952 433.07 477 324.64 2552.97 1073.03 1198.19 686.18 803.11 790.7 792.88 536.99 289.45 829.85 1953 315.21 317.51 359.3 517.26 674.95 1468.99 858.19 775.7 842.24 948.25 628.45 272.85 664.91 1954 243.53 316.54 480.29 641.47 715.96 472.33 873.53 1107.83 1094.45 808.13 327.16 223.43 608.72 1955 184.6 202.99 178.88 392.28 1110.39 669.41 814.16 717.52 857.06 908.88 475.25 257.59 564.08 1956 221.96 166.59 286.64 717.55 808.31 937.58 847.04 778.08 572.76 447.59 399.36 325.99 542.45 1957 308.79 398.66 351.95 490.45 575.84 438.15 467.23 615.94 485.26 415.72 278.59 318.01 428.72 1958 401.92 375.85 435.19 540.67 588.17 831.58 417.24 500.77 841.3 578.49 474.22 423.84 534.1 1959 412.79 452.77 457.37 475.82 594.75 604.28 593.38 613.93 600.89 458.64 441.46 423.93 510.83 1960 427.8 519.86 554.92 401.89 375.51 239.13 306.87 361.36 355.57 283.31 349.05 428.04 383.61 1961 583.88 568.77 591.37 588.8 547.52 406.25 389.59 469.7 265.3 464.55 713.12 455.45 503.69 1962 614.84 666.66 681.89 666.58 631.83 627.02 390.73 262.52 229.95 237.83 230.92 405.66 470.54 1963 574.1 572.1 635.31 481.39 261.47 473.47 485.32 278.09 274.18 328.39 481.77 696.32 461.83 1964 688.74 792.97 731.86 581.91 503.4 605.61 413.25 385.02 535.76 485.75 673.19 616.76 584.52 1965 799.45 890.06 888.97 823.74 676.05 782.4 640.15 410.32 371.99 834.16 961.27 885.13 746.97 1966 585.52 787.41 729.57 297.5 308.68 378.03 529.62 572.73 493.94 597.12 724.82 653.12 554.84 1967 765.02 923.34 898.01 544.16 308.74 768.33 932.27 1115.78 814.49 917.2 818.27 774.52 798.34 1968 784.2 943.25 671.02 667.43 608.91 525.85 508.34 633.66 705.28 993.29 746.34 800.64 715.68 1969 916.1 986.65 949.99 916.05 737.98 564.36 842.2 943.05 817.79 760.54 807.6 897.47 844.98 1970 763.92 844.86 638.05 793.35 904.87 879.24 813.25 847.23 684.33 813.43 879.62 773.24 802.95 1971 801.37 845.36 927.79 1082.28 1159.44 1057.92 1045.26 818.64 743.7 749.03 771.36 683.81 890.5 1972 884.04 863.57 973.28 1143.06 1190.14 1155.24 853.07 742.82 641.47 650.38 705.38 600.87 866.94 1973 798.36 770.73 788.86 641.57 509.71 557.56 607.26 620.51 592.67 575.84 597.87 678.69 644.97 1974 778.81 813.91 803.11 618.63 652.11 727.18 794.61 843.21 733.98 834.89 747.66 734.05 756.85 1975 692.94 854.47 774.61 641.38 1003.79 1232.83 1829.55 1614.25 1124.09 968.81 973.73 824.12 1044.55 1976 794.7 980.84 837.27 982.6 1076.78 1157.69 1123.55 990.91 832.71 803.47 919.26 750.49 937.52 1977 823.93 869.23 667.64 508.29 487.14 488.56 533.64 503.86 459.58 397.9 486.67 650.83 573.11 1978 786.39 869.74 738.34 652.99 497.01 935.4 1201.01 1196.62 1004.03 978.22 992.32 699.8 879.32 1979 898.47 921.72 826.4 961.46 1135.97 1143.06 819.37 647.73 533.68 471.43 431.83 582.42 781.13 1980 659.97 843.65 810.78 625.43 555.93 633.73 779.27 717.97 668.66 672.39 725.58 630.56 693.66 1981 740.35 840.91 712.77 499.13 547.34 778.53 859.38 711.3 578.52 479.74 456.85 575.38 648.35 1982 788.77 985.03 881.48 703.02 752.04 745.11 781 636.95 560.87 587.71 891.32 739.53 754.4 1983 600.69 895.93 928.43 679.89 531.99 556.62 560.4 777.8 710.57 459.56 523.58 636.58 655.17 1984 805.12 815.72 649.65 518.01 453.8 471.48 661.06 821.38 786.08 732.31 784.19 661.98 680.07 1985 792.33 891.68 629.46 584.93 603.79 655.92 623.7 589.18 547.65 405.94 448.73 647.55 618.41 1986 784.56 810.27 898.38 636.38 363.65 442.78 592.83 744.55 611.84 658.32 745.96 623.61 659.43 1987 728.2 836.06 583.06 356.23 467.5 564.74 589.54 592.56 517.82 422.11 410.41 652.3 560.04 1988 677.6 885.74 690.3 598.53 580.96 595.79 600.59 560.13 426.27 314.68 316.4 577.58 568.71 1989 571.73 694.88 491.99 481.96 638.41 704.15 702.9 690.84 414.56 329.21 570.49 600.5 574.3 1990 736.88 620.95 504.59 538.21 581.14 627.32 615.12 558.3 358.97 311.4 341.69 526.42 526.75 1991 620.23 631.06 412.51 520.18 608.18 610.42 611.92 618.5 438.98 401.19 419.47 550.81 536.95 1992 652.66 599.05 403.11 486.49 592.01 583.99 586.89 549.72 416.17 310.57 309.41 527.98 501.5 1993 547.43 404.23 302.17 295.19 451.06 482.05 545.7 499.75 365.29 312.67 326.31 384.84 409.72 1994 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 499.65 547.57 618.31 712.32 680.8 955.15 789.28 646.35 578.7 570.85 524.8 462.83 632.22 Std Dev 252.51 287.68 222.93 366.57 241.34 462.83 321.72 259.61 238.81 244.58 223.32 220.04 157.17