Jean Marie River is a "Designated Authority" in the Dehcho Region of the Northwest Territories, Canada. The community is located on the Jea…Jean Marie River is a "Designated Authority" in the Dehcho Region of the Northwest Territories, Canada. The community is located on the Jean Marie River where it joins the Mackenzie River. The community has a small airport, Jean Marie River Airport, and is accessible by charter aircraft throughout the year and by the all-season JMR Access Road 27 km from the Mackenzie Highway.