Lake Temisqamingue

[Fisherman]

Found this on another site,  interesting for sure. 

The Story Beneath Lake Temiskaming!

At first glance, Lake Temiskaming (also spelled Timiskaming) looks like any other long Northern Ontario lake — calm, scenic, dotted with islands. But beneath those deep blue waters lies one of the most fascinating geological stories in the province.

A Lake Born from Fire and Ice

Millions of years ago, a massive crack in the Earth’s crust — known as the Ottawa–Bonnechere Graben — split the land from what’s now Temiskaming Shores down toward Ottawa. This ancient rift was once filled with lava flows and later carved deeper by advancing glaciers during the last Ice Age. When the ice finally melted, it left behind a deep trench that filled with water… forming Lake Temiskaming.

Depth and Size

Length: about 110 km (68 mi)

Maximum depth: roughly 216 m (709 ft) — that’s deeper than the CN Tower’s observation deck is high!

The deepest point sits near the southern half of the lake, where the old fault line plunges sharply below the surface.

Lake Temiskaming straddles the Ontario–Quebec border, with Temiskaming Shores on the west and Ville-Marie on the east. The name comes from the Algonquin word “Temikami”, meaning “deep waters” — a perfect description once you know its true depth.

Today the lake remains a key part of the Ottawa River system, powering hydro dams, supporting local fisheries, and serving as a natural highway that’s connected communities since Indigenous trade canoes first cut across its misty surface.

Fun Fact

If you were to drop a coin from Devil’s Rock near Haileybury, it would sink more than 700 feet before hitting the lakebed — making Lake Temiskaming one of the deepest inland lakes in Ontario.

[glen]

Ya but what about the fishing?

might have to vertical jig because  I’m  not going to run my Downriggers on bottom.