| Seton Lake | |
|---|---|
 Seton Lake from Mission Mountain, c. 1950 Shalalth and Ohin on points at left. Looking west toward Mount Brew and Lillooet | |
  Seton Lake | |
 | |
| Location | British Columbia |
| Coordinates | 50°41′16″N 122°07′35″W / 50.68778°N 122.12639°W |
| Type | natural lake |
| Primary inflows | glacial feed and Cayoosh Creek from hydro overflow and Carpenter Lake Reservoir. |
| Primary outflows | Seton River |
| Basin countries | Canada |
| Max. length | 21.9 km (13.6 mi) |
| Max. width | 1.1 km (0.68 mi) |
| Surface area | 24.6 km2 (9.5 sq mi) |
| Average depth | 106.2 m (348 ft) |
| Max. depth | 460 m (1,510 ft) |
| Water volume | 2.61 km3 (0.63 cu mi) |
| Surface elevation | 243 m (797 ft) |
Seton Lake is a lake in the Squamish-Lillooet region of southwestern British Columbia. On the northeast side is Mission Ridge. On the southwest is the Cayoosh Range. By road, the eastern end is about 7 kilometres (4.3 mi) southwest of Lillooet.