Air and Water

Air Quality

Air Quality

The National Parks in southeastern Utah are Federal Air Quality Class I areas. Because wilderness proposals for southern Utah range from 1.9 to 5.1 million acres, and expansion of existing National Park boundaries has been unofficially proposed, federal air quality standards become immensely important.

Any significant production of natural resources could be preempted or severely restricted by Federal Clean Air mandates or a combination of these and other Federal regulations. Much of the remainder of the county is Class II.

Water Quality

Although the three largest rivers in Utah flow through or along the border of San Juan County, the habitable portions of the area are classified by geographers as desert. The county's population centers are in arid or semi-arid locations, and are dependent on rainfall and annual snow pack in adjacent mountains to fill reservoirs and recharge springs and wells.