Country= U.S.A. Station= TRACY, IA River= DES MOINES RIVER Area= 32318.69 Lat= 41.28 Lon= -92.86 Source= USGS PointID= 5488500 Area Units= km2 Discharge Units= m3/sec Starting Year= 1922 Ending Year= 1993 Total Years= 72 Total Usable Years= 69 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg Annual 1922 553.37 1113.46 1856.86 798.54 702.08 1188.75 554.65 452.43 298.35 283.51 270.91 510.4 715.28 1923 670.84 984.93 1353 863.86 1028.91 1176.67 720.07 725.74 596.64 338.71 355.38 578.31 782.75 1924 826.03 741.51 1001.33 1027.44 653.39 574.46 632.38 367.5 426.59 509.25 324.51 521.22 633.8 1925 2043.14 1121.49 770.04 571.34 403.47 326.49 296.09 232.98 182.23 221.82 387.57 359.92 576.38 1926 1174.15 1015.16 1128.3 1389.52 500.3 421.17 423.48 614.3 580.12 384.56 392.38 474.45 708.16 1927 475.54 625.6 736.61 421.17 282.41 320.08 393 376.7 239.94 212.4 205.86 402.7 391 1928 458.83 509.9 897.1 1681.27 1264.49 877.83 1292.34 1237.59 937.39 580.5 430.51 455.9 885.3 1929 668.01 1177.48 4771.6 1243.12 1155.97 728.22 628.55 530.26 458.17 1299.2 875.94 823.75 1196.69 1930 785.2 1155.74 1233.62 975.71 576.84 456.94 368.49 391.87 457.1 360.16 943.33 703.81 700.73 1931 685.45 591.72 597.4 640.34 574.84 283.3 282.2 360.77 236.78 208.3 200.09 447.09 425.69 1932 863.85 808.79 671.66 549.26 478.83 461.19 430.33 525.51 318.02 383.55 458.17 777.99 560.6 1933 1178.54 1364.78 1282.12 1221.5 625.9 415.6 428.13 374.79 346.61 255.57 241.5 263.49 666.54 1934 316.36 327.83 921.31 505.55 497.1 598.05 429.87 386.9 299.08 409.03 257.39 310.71 438.27 1935 353.09 401.9 781.37 586.63 421.83 273.36 330.49 354.97 382.94 232.78 288.61 295.1 391.92 1936 1919.25 2028.38 943.14 2176.26 610.19 397.48 423.2 749.49 375.96 625.9 355.66 699.89 942.07 1937 1223.66 1255.56 1143.55 1357.61 1084.45 510.65 490.71 489.15 574.36 459.1 532.64 501.48 801.91 1938 523.86 434.16 558.21 1523.74 528.71 454.58 553.64 501.54 299.91 243.35 228.57 259.72 509.17 1939 349.45 721.68 1454.4 958.06 594.02 628.92 486.6 775.25 507.06 370.5 273.47 296.05 617.96 1940 551.91 1096.06 869.7 759.56 451.25 378.03 945.06 438.55 310.74 217.62 283.84 388.49 557.57 1941 491.99 424.05 554.83 497.91 295.92 219.29 414.33 334.58 239.83 235.27 197.08 518.86 368.66 1942 1009.46 943.36 1650.79 1004.31 490.25 579.46 492.81 534.64 396.06 371.5 328.76 472.44 689.49 1943 1344.42 1042.87 1792.01 1107.57 711.49 516.6 516.65 456.82 302.69 258.52 303.32 323.92 723.07 1944 581.23 668.48 1539.71 2451.4 1418.13 560.96 493.45 478.56 488.85 333.96 300.66 410.69 810.51 1945 471.43 834.14 808.22 595.22 954.28 384.54 487.14 477.46 435.61 363.65 407.26 759.26 581.52 1946 1952.69 1291.05 1214.43 1356.48 1213.89 887.45 636.49 736.33 462.32 397.35 395.02 357.98 908.46 1947 1011.92 674.25 1412.38 1446.9 821.92 737.94 604.61 510.25 363.68 308.41 767.77 1311.08 830.93 1948 864.22 1592.29 2120.12 1954.82 640.7 539.63 1215.99 929.16 545.95 575.47 826.01 2224.35 1169.06 1949 1510.94 1766.47 1201.55 1141.65 1250.52 693.48 984.79 720.35 597.87 429.96 404.27 455.26 929.76 1950 478.28 528.92 766.84 646.1 466.41 478.56 354.39 342.92 456.56 262.54 254.98 333.83 447.53 1951 416.44 380.96 471.07 702.26 408.03 277.58 288.64 240.44 209.59 213.91 310.6 584.7 375.35 1952 554.83 822.85 1844.81 1014.69 570.54 494.79 276.02 299.73 302.23 221.91 216.7 331.21 579.19 1953 710.76 821.09 1036.49 921.34 1441.34 454.87 659.06 435.35 378.64 525.87 330.84 1411.1 760.56 1954 1071.3 668.69 687.28 622.5 369.04 292.23 289.29 223.29 165.61 146.34 168.44 239.89 411.99 1955 380.43 541.16 357.07 564.17 339.23 231.39 342.17 320.4 200.65 160.79 170.75 227.18 319.62 1956 209.34 588.98 822.56 688.29 381.6 225.45 265.9 217.73 284.77 345.04 215.3 457.84 391.9 1957 400.49 349.94 599.04 1217.63 673.58 350.24 278.76 193.29 239.42 469.04 544.83 727.02 503.61 1958 606.71 868.12 1389.63 1181.39 604.7 473.93 613.47 496.83 337.78 292.31 259.57 341.73 622.18 1959 515.28 1057.74 1232.98 846.21 549.81 973.63 469.15 365.11 374.53 448.31 491.44 485.41 650.8 1960 749.94 1353.94 1101.99 1886.57 587.44 400.69 387.49 411.14 377.39 402.8 305.99 344.65 692.5 1961 375.7 859.12 1442.16 1526.85 825.85 549.82 569.35 454.81 441.56 250.9 264.14 838.55 699.9 1962 907.79 862.96 1228.14 1480.7 519.48 416.54 355.87 287.62 267.08 253.88 277.96 356.52 601.21 1963 797.9 891.68 679.33 609.57 582.23 496.02 511.44 353.7 249.72 264.32 251.62 479.74 513.94 1964 1400.14 1393.2 1848.83 1879.87 1391.19 469.78 705.92 805.02 501.87 1092.58 599.75 1095.78 1098.66 1965 1123.27 1436.58 1419.5 1150.14 512.9 743.89 597.12 415.89 379.64 497.01 379.92 461.29 759.76 1966 933.46 1565.63 2027.41 711.23 792.78 623.26 386.12 476.91 350.94 377.16 579.74 509.8 777.87 1967 1325.42 1018.6 690.11 415.69 386.3 452.41 601.96 467.32 541.14 359.72 475.16 814.43 629.02 1968 858.28 503.07 848.23 551.43 387.76 349.81 318.25 305.09 258.46 220.04 257.19 368.49 435.51 1969 445.12 545.3 685.09 861.78 610.28 399.65 324.36 375.34 415.5 362 307.24 369.95 475.13 1970 509.43 657.46 1081.53 1096.53 381.18 496.96 371.96 499.29 376.99 294.55 436.18 424.38 552.2 1971 853.71 1027.7 1912.58 1057.73 904.96 489.22 612.62 774.97 427.49 393.15 358.78 892.53 808.79 1972 1288.51 1287.64 998.4 634.77 472.8 529.72 544.69 411.05 324.98 283.51 303.21 946.79 668.84 1973 1313.45 1794.08 1280.75 2094.7 1125.92 1200.92 556.02 554.83 425.32 366.66 375.67 503.95 966.02 1974 1119.34 1594.15 745.83 1160.15 524.14 468.36 362.91 443.66 448.82 326.38 337.54 596.48 677.31 1975 1033.48 1427.18 1674.27 1750.65 755.7 732.37 727.38 825.39 513.1 788.13 663.66 602.6 957.83 1976 869.33 963.66 1012.2 777.68 976.94 829.41 602.06 441.56 401.63 486.23 512.54 1155.61 752.4 1977 1104.82 644.11 1415.85 1094.83 462.57 387.57 321.35 406.12 361.7 315.78 711.04 554.92 648.39 1978 1353.64 1300.15 1293.08 752.95 1069.2 550.48 369.49 572.92 373.12 311.3 273.45 303.99 710.31 1979 614.66 1148.15 1354.19 1516.38 813.06 479.31 435.53 402.83 436.55 467.05 500.93 496.1 722.06 1980 582.05 746.2 1834.12 1810.02 994.02 531.51 435.08 391.05 318.38 294.77 290.72 292.12 710 1981 287.36 806.32 478.47 712.36 300.98 291.48 278.08 274.19 258.27 204.88 182.3 225.11 358.32 1982 829.69 1370.24 642.89 707.36 562.41 399.36 433.89 603.88 376.9 346.93 342.92 924.6 628.42 1983 1041.52 1461.46 1545.19 1712.14 649.65 560.87 544.42 352.59 357.45 358.8 404.93 1253.07 853.51 1984 1141.18 1066.96 1433.94 1071.7 887.05 510.46 453.07 824.57 432.68 312.22 311.3 374.79 734.99 1985 375.15 943.56 650.83 461.94 342.54 293.01 280.24 384.38 366.23 298.84 323.07 626.17 445.5 1986 561.96 855.27 853.44 417.11 294.93 274.14 231.67 159.61 184.02 172.88 306.75 618.32 410.84 1987 1021.06 1074.33 1335.38 815.62 451.25 555.3 580.77 348.57 309.88 258.41 225.12 269.15 603.74 1988 564.6 696.01 684.63 538.4 422.29 261.55 199.87 162.29 266.51 351.77 357.17 326.92 402.67 1989 330.3 292.9 460.2 757.86 389.22 723.31 963.23 447.41 424.38 593.01 535.76 936.47 571.17 1990 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1991 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 1992 677.14 1127.21 1164.19 637.13 384.04 380.67 377.44 369.47 362.93 354.05 787.31 1242.39 655.33 1993 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 -9999 Avg 820.18 957.34 1163.71 1041.5 663.73 517.27 496.12 466.71 378.86 371.24 383.17 583.33 653.6 Std Dev 405.42 386.02 613.13 480.58 299.42 217.34 210.39 192.62 123.51 186.5 172.93 344.36 194.19