Results
| Country: | U.S.A.
| | Station: | GRAND CANYON, ARIZ. | | River: | COLORADO R. | | Area: | 38873598.40 | | Lat: | 36.1 | | Lon: | -112.08 | | Source: | USGS | | PointID: | 9402500 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1984 | | Ending Year: | 1993 | | Total Years: | 10 | | Total Usable Years: | 3 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1984 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1985 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1986 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1987 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1988 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1989 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1990 | 327.3 | 304.23 | 310.83 | 285.78 | 301.75 | 382.34 | 371.75 | 461.02 | 373.92 | 220.29 | 245.66 | 282.81 | 322.31 |
| 1991 | 328.21 | 322.7 | 304.84 | 291.09 | 370.44 | 391.83 | 417.59 | 423.48 | 398.16 | 264.49 | 286.29 | 324.17 | 343.61 |
| 1992 | 371.14 | 338.14 | 303.49 | 313.27 | 288.97 | 328.52 | 414.8 | 421.47 | 353.46 | 268.48 | 295.88 | 331.4 | 335.75 |
| 1993 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
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| Avg | 342.22 | 321.69 | 306.39 | 296.71 | 320.39 | 367.56 | 401.38 | 435.32 | 375.18 | 251.09 | 275.94 | 312.79 | 333.89 |
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| Std Dev | 20.46 |
13.86 |
3.19 |
11.91 |
35.78 |
27.88 |
20.98 |
18.19 |
18.27 |
21.84 |
21.77 |
21.41 |
8.79 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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