Hells Half Mile Falls is a stretch of rapids on Green River in Moffat County, Colorado, in the Colorado Plateaus region. It lies about 30.2 miles northeast of Naples and roughly 108.1 miles north of Grand Junction as the crow flies.
The Colorado Plateaus are a high desert of layered sandstone mesas, canyons and plateaus with pinyon-juniper woodland and sagebrush. Waterfalls here are often seasonal, spilling over sandstone ledges after storms or snowmelt. Green River carries 5 recorded rapids along its course.
There are 5 recorded rapids in Moffat County. Triplet Falls, is under a mile away. Harp Falls, is about 1.8 miles away. Lower Disaster Falls, is about 3.9 miles away.
Hells Half Mile Falls is located at 40.5953° N, 108.9692° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The position was verified on aerial imagery. Details on trails, parking and access have not been documented for this rapid yet.