riverian

adjective1

1. •
   Pertaining to a river.

   • This riverian environment, as in other places, played a prominent role in the development of the states. — 1992

adjective1

1. •
   Of, from or relating to Rivers State in Nigeria.

noun1

1. •
   A native or inhabitant of Rivers State in Nigeria.

   • For industry watchers, Kamatan needed no greater testimony than Sekibo's and Odili's for his administration of the council as Executive Chairman, knowing the great bond between these two Riverians. — 2005