The Ofin riverbed is 90 metres above mean sea level. The Ofin has cut steep side channels, average depth 12–15 metres, into the rolling terrain over which it flows.[1]
^Wright, J.B.; Hastings, D.A.; Jones, W.B.; Williams, H.R. (1985). Wright, J.B. (ed.). Geology and Mineral Resources of West Africa. London: George Allen & UNWIN. pp. 45–47. ISBN9780045560011.