| Station: | Obidos | Continent: | South America | ||
| River: | Amazonas | Major Basin : | Atlantic Ocean | ||
| Country: | Brazil | Discharge into : | Atlantic Ocean | ||
| Observation Period: | 1928 - 1983 | Total Months: | 388 | ||
| Latitude (dec deg): | 1.91 S | Area (km2): | 4618746 | ||
| Longitude (dec deg): | 55.55 W | Elevation (m): | 37 | ||
| Annual Discharge: (m3/s): | 156062.9 | (km3/yr): | 4896.5 | ||
| Annual Runoff: (l/s/km2): | 33.6 | (mm/yr): | 1060.1 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 120233.1 | 147488.7 | 171238.1 | 194071.2 | 210292.9 | 210538.4 | 199425.1 | 174971.4 | 137581.9 | 102505.2 | 93663.4 | 100921.4 |
| km3/mo | 322.0 | 356.8 | 458.6 | 503.0 | 563.2 | 545.7 | 534.1 | 468.6 | 356.6 | 274.5 | 242.8 | 270.3 |
| mm/mo | 69.7 | 77.3 | 99.3 | 108.9 | 121.9 | 118.2 | 115.6 | 101.5 | 77.2 | 59.4 | 52.6 | 58.5 |
| l/s/km2 | 26.0 | 31.9 | 37.1 | 42.0 | 45.5 | 45.6 | 43.2 | 37.9 | 29.8 | 22.2 | 20.3 | 21.9 |
