Middle Channel Porcupine River is a stream located in Yukon-Koyukuk County, Alaska. It appears on the Black River D-6 NE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 517.39 feet (157.70 m) above sea level. The nearest populated place is Chalkyitsik, approximately 17.5 miles to the S.