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Lake Wanapitei
Wanapitei Lake.jpg
Lake Wanapitei as seen from the air, looking from the southwest.
Lake Wanapitei is located in Ontario
Lake Wanapitei
Lake Wanapitei
Location in Ontario
Location Sudbury, Ontario
Coordinates 46°45′N 80°45′W / 46.750°N 80.750°W / 46.750; -80.750
Lake type Impact crater lake
Primary inflows Wanapitei River
Primary outflows Wanapitei River
Basin countries Canada
Max. length 16.5 km (10.3 mi)
Max. width 14 km (8.7 mi)
Surface elevation 267 m (876 ft)
Settlements Skead


Lake Wanapitei (also called Lake Wahnapitae) is a lake in Ontario, Canada. It's special because it sits inside a crater made by a meteorite! This lake is located near the city of Sudbury. There's a much larger crater nearby called the Sudbury Basin, but Lake Wanapitei's crater is not connected to it.

Sudbury Wanapitei WorldWind
Lake Wanapitei seen from space, in the upper right of the image.

The crater itself is about 5.2 miles (8.3 km) wide. Scientists believe it was formed about 37.2 million years ago. This means it was created during a time in Earth's history called the Eocene period.

What Makes Lake Wanapitei Special?

How We Know It's a Crater

By the mid-1970s, scientists realized that Lake Wanapitei was indeed an impact crater. They found special rocks around the lake called suevite. These rocks are crumbly and contain tiny pieces of dark glass. Some of these suevite rocks even have a rare mineral called coesite. Coesite only forms under extreme pressure, like the pressure from a giant meteorite hitting the Earth. The suevite found here looks very similar to rocks from another famous impact crater in Germany, called the Ries impact crater.

A Lake Within a City

Lake Wanapitei is a very popular place for fun and for people to live. The neighborhoods of Skead and Boland's Bay are located right on its shores. In 2001, when the city of Greater Sudbury became much larger, Lake Wanapitei gained a unique title. It became the largest lake in the world that is completely inside the boundaries of a single city! Before this, another lake in Sudbury, Lake Ramsey, held this record.

Exploring Lake Wanapitei

Rivers and Parks

The Wanapitei River flows right through Lake Wanapitei. On the north side of the lake, you'll find Wanapitei Provincial Park. This is a "non-operating" park, which means it's a protected natural area but doesn't have any facilities like campgrounds or washrooms.

Islands of the Lake

Lake Wanapitei has many small islands. Some of the named islands include Blueberry, Howie, Pirate Island, Wanapitei, MacLennan, and Bonanza. Many of these islands are wild and untouched. However, some of them have cottages where people go for recreation. A small reserve for the Ojibwe people, called Wahnapitae, is also located on the northwestern shore of the lake.

The Meaning of the Name

The name "Wanapitei" comes from the Ojibwa language. The word waanabidebiing means "concave-tooth [shaped] water." This describes the unique shape of the lake. A nearby community also takes its name from the river and is spelled Wahnapitae. However, the spelling "Wanapitei" is the correct one for both the lake and the river.

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