| Ounasjoki | |
|---|---|
 Ounajoki above the rapids | |
 | |
| Native name | Ovnnesjohka (Northern Sami) |
| Location | |
| Country | Finland |
| Physical characteristics | |
| Source | |
| • location | Ounasjärvi, Enontekiö, Finland |
| • elevation | 450 metres (1,480 ft) |
| Mouth | |
• location | Kemijoki, Rovaniemi, Finland |
| Length | 299.6 kilometres (186.2 mi) |
| Basin size | 13,968 square kilometres (5,393 sq mi) |
The Ounasjoki[1] (Northern Sami: Ovnnesjohka) is the Kemijoki's largest tributary and is Finland's longest single river tributary. It is also the largest river entirely within its borders. Ounasjoki is approximately 299.6 kilometres (186.2 mi) in length, and the catchment area is 13,968 square kilometres (5,393 sq mi), 27% of the Kemijoki catchment area.
- ^ "Ounasjoki Map — Satellite Images of Ounasjoki". maplandia.com. Retrieved 2008-10-22.