Results
| Country: | Brasil
| | Station: | Prainha | | River: | Aripuana | | Area: | 108578 km2 | | Lat: | -7.25 | | Lon: | -60.4 | | Source: | ANEEL | | PointID: | 32 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1974 | | Ending Year: | 1996 | | Total Years: | 23 | | Total Usable Years: | 23 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1974 | 30881 | 39436 | 49010 | 55945 | 51846 | 3446 | 1636 | 860 | 688 | 957 | 1223 | 3517 | 19953.8 |
| 1975 | 5884 | 8073 | 8250 | 7952 | 5398 | 2767 | 1585 | 770 | 476 | 485 | 888 | 1859 | 3698.92 |
| 1976 | 3512 | 5984 | 7657 | 7076 | 4677 | 2658 | 1207 | 542 | 361 | 676 | 1161 | 2044 | 3129.58 |
| 1977 | 5028 | 5898 | 7775 | 7523 | 4864 | 3405 | 1765 | 892 | 652 | 1049 | 1462 | 3356 | 3639.08 |
| 1978 | 7573 | 6674 | 8952 | 6985 | 5543 | 3325 | 1625 | 867 | 567 | 888 | 1358 | 3384 | 3978.42 |
| 1979 | 6137 | 9147 | 10080 | 8348 | 5062 | 2732 | 1224 | 730 | 704 | 639 | 1164 | 1328 | 3941.25 |
| 1980 | 3325 | 5547 | 7284 | 6438 | 3560 | 1885 | 975 | 487 | 317 | 637 | 1070 | 2104 | 2802.42 |
| 1981 | 4285 | 5916 | 6961 | 6873 | 3490 | 1949 | 861 | 415 | 257 | 332 | 1196 | 2271 | 2900.5 |
| 1982 | 5080 | 8220 | 9621 | 8983 | 6139 | 3449 | 1727 | 887 | 818 | 908 | 1264 | 1850 | 4078.83 |
| 1983 | 4223 | 6343 | 7056 | 7222 | 3363 | 2024 | 995 | 488 | 295 | 382 | 657 | 1734 | 2898.5 |
| 1984 | 3234 | 4076 | 5162 | 7118 | 6277 | 3374 | 1451 | 661 | 500 | 490 | 1125 | 2499 | 2997.25 |
| 1985 | 4477 | 6942 | 7188 | 8087 | 6912 | 3010 | 1482 | 721 | 470 | 831 | 1164 | 2517 | 3650.08 |
| 1986 | 5755 | 7688 | 7542 | 7585 | 5656 | 3308 | 1619 | 894 | 729 | 994 | 1272 | 2193 | 3769.58 |
| 1987 | 3641 | 5756 | 7453 | 6245 | 3610 | 1962 | 1067 | 523 | 347 | 356 | 913 | 1778 | 2804.25 |
| 1988 | 4174 | 5086 | 8433 | 8904 | 6908 | 3259 | 1450 | 687 | 397 | 493 | 1003 | 2095 | 3574.08 |
| 1989 | 4049 | 6843 | 7789 | 7812 | 5942 | 2750 | 1642 | 901 | 554 | 571 | 1486 | 2567 | 3575.5 |
| 1990 | 4941 | 6716 | 8259 | 6787 | 3962 | 2057 | 1176 | 624 | 558 | 691 | 929 | 1537 | 3186.42 |
| 1991 | 3748 | 6218 | 7563 | 8958 | 5867 | 3099 | 1483 | 720 | 495 | 443 | 814 | 1518 | 3410.5 |
| 1992 | 3103 | 4991 | 6878 | 7014 | 4293 | 2025 | 970 | 459 | 480 | 472 | 903 | 2865 | 2871.08 |
| 1993 | 3581 | 5346 | 7723 | 7231 | 4818 | 2388 | 972 | 531 | 484 | 535 | 1170 | 2932 | 3142.58 |
| 1994 | 6391 | 7350 | 8365 | 7577 | 4885 | 2608 | 1539 | 841 | 539 | 626 | 884 | 2018 | 3635.25 |
| 1995 | 3713 | 5355 | 6707 | 6303 | 5018 | 2426 | 1211 | 553 | 291 | 393 | 929 | 2656 | 2962.92 |
| 1996 | 4052 | 5707 | 7464 | 7595 | 5173 | 2403 | 1282 | 702 | 488 | 650 | 1538 | 2459 | 3292.75 |
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| Avg | 5686.39 | 7796.17 | 9529.22 | 9589.61 | 7098.39 | 2709.09 | 1345.39 | 685 | 498.57 | 630.35 | 1111.87 | 2307.87 | 4082.33 |
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| Std Dev | 5488.71 |
6843.15 |
8474.38 |
9913.07 |
9593.4 |
542.65 |
274.96 |
157.18 |
147.41 |
210.49 |
223.19 |
595.8 |
3406.59 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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