It rises in Wicomico County , Maryland , and forms the boundary between Somerset and Worcester counties .
Dividing Creek is a 19.1 - mile - long ( 30.7 km ) tributary of the Pocomoke River on the Delmarva Peninsula .
Dividing Creek rises in Wicomico County , Maryland , and forms the boundary between Somerset and Worcester counties .
Dividing Creek is a 19.1 - mile - long ( 30.7 km ) tributary of the Pocomoke River on the Delmarva Peninsula .