The river slowly becomes east flowing as it approaches the village of Koliganek. It is 10 to 12 miles from the Nukakuk River to where Koliganek village is found sitting on the right shore. There is a new airstrip here and some services available if you end your trip here. The GPS coordinates for Koliganek airstrip are N 59.51 degrees by W 157.51. It is 1 mile east of the village site.
- Coordinates: 59.51, -157.51