The area’s topography is diverse, ranging from open flats to steep-walled cliffs. There are a total of 30,966 hectares (76,519 acres) of land within the legislative boundaries. The park is 26 kilometers (16 miles) from north to south and 13 kilometers (8 miles) from east to west. Delicate Arch, a freestanding arch carved from what was once a freestanding fin, is internationally recognized. Landscape Arch is probably the longest natural stone arch in the world. Several arches are particularly noted for their outstanding size and erosional history. Examples of developing, complete, and collapsed arches are all evident within the park’s 114 square miles. Sizeģ0,966 hectares (76,519 acres) General DescriptionĪrches National Park has the largest concentration of natural stone arches in the world. Elevationįrom approximately 1,219 meters (4,000 feet) in the canyons to 1,585 meters (5,200 feet) on the rims. Tourism is currently the most important economic activity. The area surrounding the park (Grand County) is sparsely populated, with a density of two people per square mile. Highway 191 runs from I-70 south to Moab and accesses the park entrance road. The park is accessible by major travel routes such as Interstate 70, located 32 kilometers (20 miles) north of the park headquarters. The park is 8 kilometers (5 miles) north of Moab, Utah, 161 kilometers (100 miles) west of Grand Junction, Colorado, and 386 kilometers (240 miles) southeast of Salt Lake City, Utah. Southeast Utah along and north of the Colorado River in Grand County. In 1999, the Lost Spring section was added to the park, increasing the total area by 1,255 hectares (3,100 acres) to 30.979 hectares (76,519 acres). In 1971, the designation for Arches was changed from national monument to national park and the acreage was increased to 29,708 hectares (73,379 acres). ![]() Boundary adjustments were made on NovemJJanuand November 12, 1971. ![]() In 1938, the monument was enlarged to include a number of historic and prehistoric cultural sites. The proclamation states that the monument was established "to protect extraordinary examples of wind erosion in the form of gigantic arches, natural bridges, ‘windows,’ spires, balanced rocks and other unique wind-worn sandstone formations, the preservation of which is desirable because of their education and scenic value.” Research has established water as the primary erosional agent, although wind plays a role. Park History and PurposeĪrches National Monument was established by Presidential Proclamation No. The following information is reproduced from the Northern Colorado Plateau Network monitoring plan, published in 2004.
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