Results
| Country: | U.S.A.
| | Station: | HENRY, IL | | River: | ILLINOIS RIVER | | Area: | 35074.29 | | Lat: | 41.11 | | Lon: | -89.35 | | Source: | USGS | | PointID: | 5558300 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1981 | | Ending Year: | 1993 | | Total Years: | 13 | | Total Usable Years: | 11 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1981 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 276.47 | 219.06 | 242.89 | -9999 |
| 1982 | 277.23 | 520.02 | 1577.07 | 1039.52 | 373.32 | 333.12 | 376.78 | 277.93 | 200.08 | 186.17 | 432.94 | 1454.76 | 587.41 |
| 1983 | 415.33 | 386.01 | 573.46 | 1384.32 | 734.05 | 358.94 | 429.38 | 197.38 | 239.22 | 238.8 | 307.26 | 535.47 | 483.3 |
| 1984 | 322.45 | 731.92 | 796.07 | 714.63 | 694.68 | 578.14 | 249.7 | 200.37 | 208.68 | 228.49 | 323.82 | 350.55 | 449.96 |
| 1985 | 461.66 | 594.66 | 1491.94 | 770.13 | 281.06 | 215.28 | 198.28 | 216.16 | 204.73 | 242.46 | 898.39 | 593.2 | 514 |
| 1986 | 307.11 | 541.06 | 659.24 | 304.96 | 363.67 | 415.03 | 421.9 | 212.83 | 275.66 | 566.25 | 445.62 | 480.66 | 416.17 |
| 1987 | 263.71 | 369.94 | 365.47 | 366.89 | 625.62 | 479.99 | 241.62 | 486.41 | 345.47 | 245.54 | 198.96 | 638.05 | 385.64 |
| 1988 | 524.32 | 458.05 | 288.86 | 738.98 | 288.26 | 203.85 | 204.8 | 178.98 | 160.58 | 159.48 | 337.64 | 210.57 | 312.86 |
| 1989 | 302.29 | 221.73 | 334.49 | 335.18 | 241.95 | 491.11 | 295.87 | 274.13 | 737.17 | -9999 | -9999 | -9999 | -9999 |
| 1990 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 360.39 | 461.76 | 708.29 | -9999 |
| 1991 | 701.71 | 802.38 | 1008.09 | 1278.8 | 859.28 | 448.75 | 160.54 | 105.89 | 76.09 | 240.42 | 386.43 | 443.75 | 542.68 |
| 1992 | 269.38 | 357.09 | 364.1 | 371.9 | 252.3 | 210.08 | 287.38 | 195 | 289.58 | 266.57 | 780.7 | 558.49 | 350.21 |
| 1993 | 1022.79 | 377.22 | 751.68 | 974.67 | 658.17 | 830.54 | 816.53 | 527.7 | 738.88 | -9999 | -9999 | -9999 | -9999 |
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| Avg | 442.54 | 487.28 | 746.41 | 752.73 | 488.4 | 414.98 | 334.8 | 261.16 | 316.01 | 273.73 | 435.69 | 565.15 | 449.14 |
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| Std Dev | 224.29 |
164.89 |
429.02 |
366.54 |
216.67 |
177.55 |
174.76 |
124.17 |
209.84 |
104.45 |
208.44 |
318.58 |
86.1 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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