The Green River Drift is one of the nation's longest and oldest running cattle drives and follows a corridor for migration of both domestic and wild animals. Road trip visitors on route along US HWY 189 and on Highway 352 may have an opportunity to see a part of our authentic, old west heritage. Twice a year, in early spring and then again in early fall (around Oct 13th this year) cowboys drive several thousand head of cattle back home to their ranches from the northern high desert mesas of the Bridger-Teton National Forest. 

More than a dozen ranches of the Green River Cattle Association share a 168,000-acre grazing allotment on Bureau of Land Management land on the mesas, and a 127,000-acre allotment on the national forest. It's a three-week trip along a traditional stock route and the cattle drift back south. The ranchers spend another month sorting their cattle from their neighbors before driving them back to the home ranches. 

The Historic Green River Drift has been used since 1896 and is still in use today as part of cattle operations for ranchers in the Upper Green River Valley. It is 58 miles long and has 41 miles of spur trails. The lower end of the Drift crosses the Mesa and the upper end of the Drift roughly follows Highway 352 north of Cora to the forest boundary. The cattle sorting grounds for the Drift are located near Trappers Point Wildlife Overpass, at the junction at US 191/Hwy 352 a few miles west of Pinedale.