English: Panoramic View of Lake Minnewanka in Banff National Park from Aylmer Lookout

English: Lake Minnewanka ("Water of the Spirits" in Nakoda) is a glacial lake located in the eastern area of Banff National Park in Canada, about five kilometres (3.1 miles) northeast of the Banff townsite. The lake is 21 km (13 mi) long and 142 m (466 ft) deep, making it the longest lake in the mountain parks of the Canadian Rockies (the result of a power dam at the west end). The lake is fed by the Cascade River, flowing east of Cascade Mountain, and runs south through Stewart Canyon as it empties into the western end of the lake. Numerous streams flowing down from Mount Inglismaldie, Mount Girouard and Mount Peechee on the south side of the lake also feed the lake.