Washington County Growth and Conservation Act of 2006

Washington County Growth and Conservation Act of 2006 - Provides for the conveyance of certain public land in Washington County, Utah. Sets forth requirements for the disposition of proceeds from the sale of certain of such land.

Designates specified public lands in Utah as wilderness and as components of the National Wilderness Preservation System. Sets forth provisions governing the administration of each area designated as wilderness.

Releases certain wilderness study areas in Washington County from further study for designation as wilderness.

Sets forth provisions relating to wildlife management within the wilderness areas designated by this Act.

Designates specified segments of the Virgin River and its tributaries across federal land within and adjacent to Zion National Park as components of the national wild and scenic rivers system.

Establishes corridors for utilities, water infrastructure, and transportation purposes in Washington County.

Grants Washington County and the Washington County Water Conservancy District nonexclusive rights-of-way to nonwilderness federal land in the county for facilities and systems that are necessary for: (1) the impoundment, storage, treatment, transportation, or distribution of water or wastewater; or (2) flood control management.

Directs the Secretary of the Interior and the Secretary of Agriculture to designate a system of trails, which shall be known as the "High Desert Off-Highway Vehicle Trail."

Establishes the Red Cliffs National Conservation Area in Utah. Sets forth provisions regarding management and use of the Area. Provides for the acquisition of land or interests in the Area.