| Southgate River | |
|---|---|
 Pigeon Valley, through which the Southgate River flows, as viewed from Bute Inlet | |
  Location of mouth in British Columbia | |
| Physical characteristics | |
| Source | Good Hope Mountain |
| • location | Strathcona Regional District, British Columbia, Canada |
| Mouth | Bute Inlet |
• location | Strathcona Regional District, British Columbia, Canada |
• coordinates | 50°53′11″N 124°47′16″W / 50.88639°N 124.78778°W |
| Length | 65 km (40 mi) |
| Basin features | |
| Tributaries | |
| • right | Bishop 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.[1] The lower reaches of the river's course are flat-bottomed and are named Pigeon Valley.[2]