The Lady Evelyn River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in Temagami region in Nipissing

Nipissing District, Ontario

Nipissing District, Ontario is a district in Northeastern Ontario in the Canadian province of Ontario. It was created in 1858. The district seat is North Bay.In 2006, the population was 84,688...

, Sudbury

Sudbury District, Ontario

The Sudbury District is a district in Northeastern Ontario in the Canadian province of Ontario. It was created in 1894 from townships of eastern Algoma District and west Nipissing District....

 and Timiskaming

Timiskaming District, Ontario

Timiskaming is a district and census division in Northeastern Ontario in the Canadian province of Ontario. The district was created in 1912 from parts of Algoma, Nipissing, and Sudbury districts. In 1921, Cochrane District was created from parts of this district and parts of Thunder Bay...

 Districts, Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. The river begins at the confluence of the North and South Lady Evelyn Rivers and flows to its mouth at the Montreal River

Montreal River (Timiskaming District, Ontario)

The Montreal River is a river in Timiskaming District, Ontario, Canada. It travels from its source at Smoothwater Lake to its mouth at Lake Timiskaming on the Ottawa River. The river is a significant source of hydroelectricity.-Course:...

. It lies mostly in Lady Evelyn-Smoothwater Provincial Park

Lady Evelyn-Smoothwater Provincial Park

Lady Evelyn-Smoothwater Provincial Park is a remote park in northeastern Ontario, Canada, near Lake Temagami. It is one of the several provincial parks located in the Temagami area....

, and mostly within Timiskaming District, with the exception of a short portion of the South Branch at its most southern stretch, which lies in northeastern Sudbury District, and of the southernmost tip of Lady Evelyn Lake

Lady Evelyn Lake

Lady Evelyn Lake is a lake in northeastern Ontario, Canada, located in the Temagami region. The highly-irregularly shaped lake consists of two parts, about equal in size, separated by the Obisaga Narrows. The southern part is within the Obabika River Provincial Park, directly east of the Lady...

, which lies in northwestern Nipissing District. Numerous waterfall

Waterfall

A waterfall is a place where flowing water rapidly drops in elevation as it flows over a steep region or a cliff.-Formation:Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens...

s are found along the Lady Evelyn River, such as Frank's Falls. The most impressive and highest is Helen Falls

Helen Falls

Helen Falls is a waterfall on the Lady Evelyn River within Lady Evelyn-Smoothwater Provincial Park in Temagami, Ontario, Canada. The falls are the highest and most impressive on the Lady Evelyn River with a height more than ....

where water cascades from a height more than 25 m (82 ft).