The river flows in a northeasterly direction from its source in
the Appalachian Mountains of northwestern New Brunswick to
Chaleur Bay. Its meander length is approximately 200 kilometres.
The Restigouche is fed by several tributaries flowing south from
Quebec's Notre Dame Mountains on the western edge of the Gaspé
Peninsula (Kedgwick River, Gounamitz River, Patapédia River and
Matapédia River) as well as the Upsalquitch River flowing north
from New Brunswick's Chaleur Uplands. Located mostly in New
Brunswick, the river forms the inter-provincial boundary between
the two provinces from its confluence with the Patapédia River
to its mouth at Dalhousie, New Brunswick and Miguasha, Quebec
where it discharges into Chaleur Bay. The estuary is 25 km long
and extends from its mouth at Dalhousie to Tidehead, New
Brunswick and is an important stopover for sea ducks, especially
Black Scoters and Sea Scoters, during migration. This estuary
has been designated an Important Bird Area by the Canadian
Wildlife Service. The H