Yampa River 扬帕河
The Yampa River is a 250 mi (402 km) long river in northwestern Colorado, of the Southwestern United States. It is a tributary of the Green River, and so contributes into the Colorado River.
The name is derived from the Snake Indians word for the Perideridia plant, which has an edible root. John C. Frémont was among the first to record the name 'Yampah' in entries of his journal from 1843, as he found the plant was particularly abundant in the watershed.