Lake Couchiching (// KOO-chə-ching), from the Ojibwe gojijiing meaning "inlet", is a medium-sized lake in Central Ontario separated from Lake Simcoe by a narrow channel. The Trent-Severn Waterway enters Lake Simcoe by the Talbot River and exits this lake by the Severn River which empties into Georgian Bay. The lake is 16 km long and slightly less than 5 km wide. The city of Orillia is located on the narrow channel connecting this lake with Lake Simcoe.
Lake Couchiching is the small teardrop-shaped lake just north of Lake Simcoe.
|Max. length||16 km (9.9 mi)|
|Max. width||5 km (3.1 mi)|
|Surface area||33.75 km2 (13.03 sq mi)|
|Max. depth||12 m (39 ft)|
|Surface elevation||219 m (719 ft)|
|Islands||Big chief, Horseshoe, Heron, Thistle, Bird, Nadie, Green, Portage, Ship, and Garnet|
Singer-songwriter Gordon Lightfoot paid homage to the lake in the song Couchiching.
In a 2012 study, the lake showed a microalgae density of 2.4 × 10^7/cm^2, with a high species diversity. The lake showed low total phosphorus and high organic carbon content, when compared to Lake Simcoe.
- Merriam-Webster's Geographical Dictionary, Third Edition (Merriam-Webster, 1997; ISBN 0877795460), p. 285.
- Kanavillil, N., Thorn, M., & Kurissery, S (September 2012). "Characterization of natural biofilms in temperate inland waters". Journal of Great Lakes Research. Elsevier B.V. 38 (3): 429–438. doi:10.1016/j.jglr.2012.06.014. Retrieved 25 July 2014.CS1 maint: Multiple names: authors list (link)