Results
| Country: | U.S.A.
| | Station: | SIDNEY, MT. | | River: | YELLOWSTONE RIVER | | Area: | 26157459.91 | | Lat: | 47.67 | | Lon: | -104.15 | | Source: | USGS | | PointID: | 6329500 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1982 | | Ending Year: | 1991 | | Total Years: | 10 | | Total Usable Years: | 7 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1982 | 120.85 | 567.76 | 425.04 | 129.72 | 409.03 | 631.48 | 497.02 | 256.67 | 124.58 | 58.19 | 26.48 | 399.67 | 303.87 |
| 1983 | 201.22 | 248.31 | 153.83 | 553.91 | 1017.85 | 890.57 | 97.28 | 41.85 | 17.6 | 65.6 | 225.31 | 363.22 | 323.05 |
| 1984 | 133.63 | 140.48 | 625.81 | 926.46 | 818.95 | 241.73 | 374.09 | 34.51 | 65.65 | 59.01 | 194.68 | 204.33 | 318.28 |
| 1985 | 575.97 | 217.27 | 1272.07 | 876.71 | 317.85 | 752.03 | 288.81 | 231.43 | 92.1 | 495.23 | 604.77 | 1040.33 | 563.71 |
| 1986 | 210.04 | 419.23 | 119.41 | 364.83 | 392.88 | 122.61 | 278.09 | 15.56 | 164.24 | 1475.06 | 1196.39 | 616.81 | 447.93 |
| 1987 | 171.83 | 463.67 | 859.83 | 460.15 | 258.75 | 173.74 | 129.74 | 20.05 | 39.63 | 17.4 | 127.65 | 330.01 | 254.37 |
| 1988 | 481.84 | 277.03 | 356.77 | 878.87 | 257.59 | 16.56 | 31.15 | 33.51 | 48.05 | 32.46 | 64.96 | 100.3 | 214.92 |
| 1989 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 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 |
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| Avg | 270.77 | 333.39 | 544.68 | 598.66 | 496.13 | 404.1 | 242.31 | 90.51 | 78.84 | 314.71 | 348.61 | 436.38 | 346.59 |
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| Std Dev | 167.88 |
141.62 |
381.4 |
282.6 |
277.67 |
320.33 |
153.05 |
97.69 |
47.77 |
498.61 |
388.46 |
288.38 |
111.12 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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