Utah State University Extension
The San Rafael River in southeastern Utah is formed by the confluence of Huntington, Cottonwood, and Ferron Creeks. The San Rafael River is approximately 108 miles long and flows through some of the wildest landscapes in the state to its confluence with the Green River. The total watershed area is 2,432 square miles.
Extension, USU, "Watershed Fact Sheet: Improving Utah's Water Quality, San Rafael River Watershed" (2012). All Current Publications. Paper 1273.