Nahanni National Park Reserve
Nahanni National Park Reserve  is in the Northwest Territories of Canada. It has been designated a UNESCO World Heritage Site to protect the South Nahanni River, one of the most spectacular wild rivers in North America.
Nahanni National Park Reserve Headquarters, Box 348, Fort Simpson, NWT, Canada X0E 0N0, Phone: 867-695-3151 (Fax: 867-695-2446, Email:email@example.com). Hours: Winter (September 15 - June 15) M-F 8:30AM-noon, 1PM-5PM. Closed weekends. Summer (June 15 - September 15) Daily 8AM-noon, 1PM-5PM.
Flora and fauna
The park is mostly boreal forest, with a variety of ecosystems ranging from lowland wet areas to alpine tundra. The main tree species are white and black spruce, lodgepole pine, jackpine, subalpine fir, larch, balsam poplar, trembling aspen and white birch. The varied ecosystems resulting from varied altitudes, hot and cold springs, and river influence results in a diversity of vegetation.
The park is home to a variety of wildlife including Dall's sheep, mountain goats, woodland caribou, wolves, black bears, grizzly bears and trumpeter swans.
The climate is cold and highly variable and visitors should be prepared for extremes. July and August are generally warmest with temperatures between 0°C to 30°C, with frost possible at night toward the end of the period. The river begins icing in September.
To actually get to the river, a floatplane is necessary. There are a number of charter companies providing service to the Nahanni.
Other regional airlines:
Complete list of operators can be found on the Parks Canada website.
Parks Canada does charge visitors to Nahanni a fee. Parks Canada employees track your progress throughout the park (utilizing their Park Wardens and river check-in points) and this fee covers the costs of managing the park. For most visitors on a planned canoe trip this fee will be around C$175.  
One can travel down the river via canoe or kayak.
Licensed Outfitting Companies
Use a licensed commercial outfitter for whitewater trips.