James Lake is a lake in northeastern Ontario, Canada, located in the Temagami region along Highway 11.

Water levels of James Lake increased and decreased in the early 1900s.

[1] This rise in water levels began to cease in 1906 when operations of Northland Pyrite Mine on the lake's southwestern shore dumped waste rock into the lake.

[1] Erosion of the waste rock resulted in the development of acidic lake waste waters next to the waste pile, causing neighboring organisms to disappear.

This Northern Ontario geographical article is a stub.