Southgate River

Southgate River
Pigeon Valley, through which the Southgate River flows, as viewed from Bute Inlet
Location of mouth in British Columbia
Physical characteristics
SourceGood Hope Mountain
  locationStrathcona Regional District, British Columbia, Canada
MouthBute Inlet
  location
Strathcona Regional District, British Columbia, Canada
  coordinates
50°53′11″N 124°47′16″W / 50.88639°N 124.78778°W / 50.88639; -124.78778
Length65 km (40 mi)
Basin features
Tributaries 
  rightBishop River

The Southgate River is a river in the Pacific Ranges of the Coast Mountains in British Columbia, Canada, entering the head of Bute Inlet, on that province's South Coast, just east of the mouth of the Homathko River at Waddington Harbour. The lower reaches of the river's course are flat-bottomed and are named Pigeon Valley.