The Escalante Desert is a geographic Great Basin region and arid desert ecoregion, in the deserts and xeric shrublands biome, located in southwestern Utah. The Escalante Desert is northwest of Cedar City in Iron County, Utah, and extends into part of Millard County. The region spans most of Iron County, which annually has 13 inches rainfall and …The Escalante Desert is a geographic Great Basin region and arid desert ecoregion, in the deserts and xeric shrublands biome, located in southwestern Utah. The Escalante Desert is northwest of Cedar City in Iron County, Utah, and extends into part of Millard County. The region spans most of Iron County, which annually has 13 inches rainfall and 5.9 feet snowfall. The Escalante region also lies primarily between State Route 56 and Route 21, as well as north and west of Interstate 15.