| Ptarmigan Lake | |
| Pushpin Map: | Ontario |
| Location: | Cochrane District, Ontario |
| Coords: | 49.9308°N -84.1417°W |
| Basin Countries: | Canada |
| Length: | 0.27km (00.17miles) |
| Width: | 0.12km (00.07miles) |
| Elevation: | 224m (735feet) |
Ptarmigan Lake is one of a trio of lakes that form a small endorheic basin in Cochrane District, Ontario, Canada. It is about 270m (890feet) long and 120m (390feet) wide and lies at an elevation of 224m (735feet). The lake lies about 16km (10miles) north of the community of Calstock.
The primary outflow is a small creek that flows through Swallow Lake to Pelican Lake, which has no outlet.