Length
418
miles · published figure, not every bend
Maine / Rivers / St. John River
St. John River
Baker Branch / Quebec → Bay of Fundy (NB)
Drainage
21,230
square miles of land that feed this river
Live flow
215 cubic feet per second
instant · Allagash River near Allagash, Maine · 2026-10-05
Daily mean at the gage
Allagash River near Allagash, Maine · site 01011000. One gage, not the whole river. 370 published days, Sep 30, 2025 – Oct 4, 2026. Cubic feet per second.