Comté de Grand
Grand County lies on the east side of Utah. Its east border abuts the west border of the state of Colorado. The Green River flows southward through the eastern part of central Utah, and its meandering course defines the western border of Grand County. The Colorado River enters the east side of Grand County from Colorado, flowing southwestward toward its confluence with the Green in San Juan County, south of Grand. The Dolores River also enters Grand County from Colorado, flowing westward to its confluence with the Colorado River near Dewey.