Castle Valley is a community of Grand County north of Moab and accessed by "The River Road" or Hwy 128. The valley is about 8 miles long and 3 miles wide (15,360 acres) and drops from nearly 6000 feet to about 4200 in elevation.In the upper valley is the community of Castleton.
Up until the 1920's, the focus of the Castle Valley farming community was towards Castleton, then a small mining and sheepherding boomtown, and the post office/general store in Richardson, an outpost in Professor Valley. With the decline of Castleton and the disappearance of Richardson, Castle Valley's isolation led to the selling and consolidating of land into large ranching parcels. The "old ranch house" near the large cottonwood tree was the homestead of what eventually became the McCormick Ranch.
The Carlsberg Development Corporation bought the McCormick ranch and got approval for the plat of Castle Valley River Ranchos in 1973. The sale of lots began in 1974.
In the early years, as an unincorporated community in Grand County, the Castle Valley River Ranchos Property Owners Association was critical to governance. In 1985, the Town of Castle Valley was officially incorporated.
See also Groundwater section here
- Castle Valley Groundwater Modeling Draft. Downs.
- Castle Valley Groundwater Modeling Final. Downs.
- 1996 - Recharge area and water quality of the valley-fill aquifer Castle Valley, Grand County. UGS.
- 2004 - Ground-water quality classification and recommended septic tank soil-absorption-system density maps, Castle Valley, Grand County, Utah. Lowe, USG. (Plates)
- 2016 - Hydrologic Asessment of Surface and Water Resources in Castle Valley, UT; Analysis and Water Budget;Final Report Phase 1