Oyapock
| Oyapock | |
|---|---|
| View of the Oyapock River from Brazil toward French Guiana | |
| Guyane Oyapock River map | |
| Location | |
| Countries | Brazil and France | 
| Physical characteristics | |
| Source | |
| • location | Tumuk Humak Mountains | 
| Mouth | |
|  • location | Atlantic Ocean | 
|  • coordinates | 04°14′08″N 51°36′53″W / 4.23556°N 51.61472°W | 
| Length | 403 km (250 mi) | 
| Basin size | 30,869 km2 (11,919 sq mi) | 
| Discharge | |
| • location | Near mouth | 
| • average | 1,457 m3/s (51,500 cu ft/s) | 
| Basin features | |
| Bridges | Oyapock River Bridge | 
The Oyapock or Oiapoque (/ˈɔɪ.əpɒk, ɔɪ.əˈpoʊki/ OY-ə-pok, OY-ə-POH-kee; French: Fleuve Oyapock [flœv ojapɔk]; Portuguese: Rio Oiapoque [ˈʁi.u ɔjɐˈpɔki]) is a 403-kilometre (250 mi) long river in South America that forms most of the border between the French overseas department of French Guiana and the Brazilian state of Amapá.