Description
Porcupine River is located heads in Lake Elfendahl, flows SW through Lake Helen to Porcupine Bay, 15 mi. NW of Chichagof, on W coast of Chichagof I., Alex. Arch.
History
Named in 1928 by US@C&GS for Porcupine Bay. The name was published in 1928 on Chart 82589