Spanish Valley (Utah)Spanish Valley is a flat in Grand and San Juan counties in Utah, United States, south of Moab.DescriptionThe valley lies at an elevation of, and is south southeastward of the Moab Valley. Pack Creek flows through Spanish Valley north northwestward into Moab Valley toward its confluence with the Colorado River.HistoryThe Old Spanish Trail passed through Spanish Valley on its way to its Colorado River crossing at what is now Moab.