Lake Minnewanka is a glacial lake in Banff National Park.
The lake, which is approximately 5 km (3 miles) from Banff township is 21 km (13 miles) long and 142 metres (466 feet) deep.
It is the longest lake in the Canadian Rockies region. The lake’s main fed is from Cascade Mountain via the Cascade River. There is also fed from Mount Inglismaldie, Mount Girouard and Mount Peechee.
The Stony Nakoda people called the lake Mini-Waka (Water of Spirits) after the spirits that reside in the lake. The early European settlers named it Devil’s Lake.
The area is popular for picnicking, hiking, mountain biking, scuba diving, and boating. It is the only lake in the Banff National Park that allows use of motorized boats.