*Beaver River (Beaver) originates in the Tushar Mountains east of Beaver at the confluence of the South Fork and several other creeks and springs. It drains west past Beaver, Milford, and the southern end of the Mineral Range then turns north and disapears into the ground at the Beaver Bottoms near Red Rock Knoll and Black Rock in Millard County. In earlier days it was known for its large number of beaver colonies. Jedediah Smith called it "The Lost River" and Dominguez and Escalante called it "El Rio de **Tejedor" (The Beaver River).
John W. Van Cott