Orisa River

Orisa
The Orisa in Olla, Kwara State.
Native nameOdò Òrisá (Yoruba)
Location
CountryNigeria
Physical characteristics
Source 
 • locationOra-Igbomina
 • coordinates7°42′36″N 4°40′2″E / 7.71000°N 4.66722°E / 7.71000; 4.66722 (Orisa source)
Mouth 
 • location
River Niger
 • coordinates
5°33′0″N 6°33′0″E / 5.55000°N 6.55000°E / 5.55000; 6.55000
Length300 km (190 mi)
Basin features
ProgressionRiver NigerGulf of Guinea

The Orisa River (Yorùbá: [òɾisá]) is a river in Kwara State, Nigeria. It is an alluvial river and tributary with a 300-kilometre (186mi) path originating in Ọra and flowing through various towns like Aran-Orin, Rore, Olla and Omu-Aran before draining into the River Niger.[1][2][3]

References

  1. ^ Oyegun, Rowland. Water Resources in Kwara State Nigeria. Matanmi & Sons Printing & Publishing Company. ISBN 9781870125.
  2. ^ "Boundary Influence and Flow Characteristics of Orisa and Ala Rivers in Kwara and Ondo States, Nigeria" (PDF). Landmark University Repository. Retrieved March 1, 2026.
  3. ^ "Assessment of levels of some physico-chemical parameters and heavy metals of Orisa River, Omu-Aran, Nigeria". ResearchGate. Retrieved March 1, 2026.