Region
Prudhoe Bay to Alaska/Canada border (Highway) route
8
Alaska Highway corridor
6
Yukon
5
Mackenzie River Delta
4
Prudhoe Bay to Delta Junction route
4
Brooks Range
3
North Slope
3
Northwest Territories
3
Prudhoe Bay
3
Tanana River watershed
3
Arctic Coastal Plain/Mackenzie River Delta/Mackenzie River route
1
Sadlerochit Reservoir
1
Tanana River Valley
1
Yerrick Creek
1