The Niaqunguk River, also known as the Apex River, flows through the rugged Arctic landscape near Iqaluit, Nunavut, Canada, emptying into Koojesse Inlet. Situated at approximately 63°44′N, 68°26′W, this remote subarctic stream winds through a dramatic valley environment shaped by ancient geology and extreme seasonal conditions. The river system includes connected lakes and drainage channels, with the main channel flowing from upland areas down through a flat valley before reaching tidal waters. The Niaqunguk is a relatively small stream by southern standards, but it supports a meaningful resident fish population adapted to the harsh Arctic environment, making it a unique and rewarding destination for anglers willing to venture into one of Canada's most remote territories.