| Station: | Selfoss | Continent: | Europe | ||
| River: | Olfusa | Major Basin : | Atlantic Ocean | ||
| Country: | Iceland | Discharge into : | |||
| Observation Period: | 1965 - 1979 | Total Months: | 168 | ||
| Latitude (dec deg): | 63.93 N | Area (km2): | 5760 | ||
| Longitude (dec deg): | 21.01 W | Elevation (m): | 10 | ||
| Annual Discharge: (m3/s): | 365.8 | (km3/yr): | 11.5 | ||
| Annual Runoff: (l/s/km2): | 63.5 | (mm/yr): | 2003.0 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 345.8 | 361.0 | 366.1 | 386.1 | 387.5 | 416.8 | 353.4 | 367.8 | 346.1 | 366.1 | 350.3 | 344.0 |
| km3/mo | 0.9 | 0.9 | 1.0 | 1.0 | 1.0 | 1.1 | 0.9 | 1.0 | 0.9 | 1.0 | 0.9 | 0.9 |
| mm/mo | 160.8 | 151.6 | 170.2 | 173.7 | 180.2 | 187.6 | 164.3 | 171.0 | 155.7 | 170.2 | 157.6 | 160.0 |
| l/s/km2 | 60.0 | 62.7 | 63.6 | 67.0 | 67.3 | 72.4 | 61.3 | 63.9 | 60.1 | 63.6 | 60.8 | 59.7 |
