The vast majority of the lake is in geographic Bedford Township,[3] part of the municipality of South Frontenac,[4] with a small tip of Mill Bay at the north in geographic Oso Township,[5] Central Frontenac; both municipalities are in Frontenac County.

The northeastern end of the lake is in geographic South Sherbrooke Township,[6] part of the municipality of Tay Valley in Lanark County.

The primary outflow, at the community of Bolingbroke at the northeast and controlled by a dam, is the Tay River.

[7] Counterclockwise from the river mouth Other map sources:

This article related to a lake in Canada is a stub.