Sentence 1: Plymouth is located on Albemarle Sound about seven miles ( 11 km ) upstream from its mouth into the Roanoke River in the North Banks North Carolina region .
Sentence 2: Plymouth is located on the Albemarle Sound about seven miles ( 11 km ) upriver from its mouth into the Roanoke River in North Carolina 's Inner Banks region .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?