| Fourcorner Lake | |
| Location: | Haliburton County, Ontario |
| Coordinates: | 45.16°N -78.279°W |
| Type: | lake |
| Etymology: | from its location at a quadripoint |
| Part Of: | Ottawa River drainage basin |
| Outflow: | Fourcorner Creek |
| Basin Countries: | Canada |
| Area: | 99.73ha |
| Elevation: | [1] |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Alt: | Map of Southern Ontario with location of Fourcorner Lake shown with a dot |
| Pushpin Map Caption: | Location in Southern Ontario |
Fourcorner Lake (fr|lac Fourcorner) is a lake in the municipality of Dysart et al, Haliburton County in Central Ontario, Canada.[2] [3] [4] [5] [6] It is partly within Algonquin Provincial Park and is in the Ottawa River drainage basin. The lake takes its name from its location at a quadripoint, the junction point of four geographic townships: Harburn at northwest, Bruton at the northeast, Harcourt at the southeast, and Dudley at the southwest.
Fourcorner Lake has an area of 99.73ha and lies at an elevation of . It is long and wide. The nearest named community is Kennaway, to the east. The portion of the lake in geographic Bruton Township, that is the northeast portion, is the part of the lake that is within Algonquin Provincial Park.
There two unnamed inflows: one at the southwest; and one at the north, arriving from the direction of Weepine Lake. The primary outflow, at the east end of the lake, is Fourcorner Creek. Fourcorner Creek flows via Benoir Lake, the York River and the Madawaska River to the Ottawa River.