The Porcupine River is a river located in the northern regions of Canada and Alaska. It flows approximately 700 kilometers (about 435 miles) and is a tributary of the Yukon River. The river is known for its scenic landscapes and is an important waterway for local wildlife and communities. The river's name is derived from the nearby Porcupine Caribou Herd, which migrates through the area. The Porcupine River is also significant for indigenous peoples, providing resources and transportation routes. Its waters support various fish species, making it a vital ecosystem in the region.