| Station: | Porto Velho | Continent: | South America | ||
| River: | Madeira | Major Basin : | Amazonas | ||
| Country: | Brazil | Discharge into : | Atlantic Ocean | ||
| Observation Period: | 1969 - 1979 | Total Months: | 132 | ||
| Latitude (dec deg): | 8.76 S | Area (km2): | 950582 | ||
| Longitude (dec deg): | 63.91 W | Elevation (m): | 90 | ||
| Annual Discharge: (m3/s): | 17475.4 | (km3/yr): | 550.9 | ||
| Annual Runoff: (l/s/km2): | 18.4 | (mm/yr): | 579.6 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 23267.9 | 28654.3 | 32776.9 | 30910.7 | 24002.5 | 16768.5 | 10621.0 | 6475.6 | 5421.5 | 6267.3 | 9387.9 | 15928.2 |
| km3/mo | 62.3 | 69.3 | 87.8 | 80.1 | 64.3 | 43.5 | 28.4 | 17.3 | 14.1 | 16.8 | 24.3 | 42.7 |
| mm/mo | 65.6 | 72.9 | 92.4 | 84.3 | 67.6 | 45.7 | 29.9 | 18.2 | 14.8 | 17.7 | 25.6 | 44.9 |
| l/s/km2 | 24.5 | 30.1 | 34.5 | 32.5 | 25.3 | 17.6 | 11.2 | 6.8 | 5.7 | 6.6 | 9.9 | 16.8 |
