image/svg+xml SOKOTO KEBBI ZAMFARA KATSINA KANO JIGAWA YOBE BORNO GOMBE BAUCHI ADAMAWA TARABA PLATEAU NASSARAWA KADUNA NIGER KWARA OYO OGUN LAGOS KOGI EDO ONDO EKITI DELTA ANAMBRA ENUGU EBONYI BENUE CROSS RIVER AKWA IBOM IMO RIVERS B A Y E L SA ABIA OSUN ABUJA REGION ANNUAL RAINFALL ( MM) Zone 1 (300 - 762) Zone 2 (762 - 1016) Zone 3 (1016 -2540) Zone 4 (2540 - 3048 ZONE 5 (>_3048)