| Castle Rock | |
| Elevation Ft: | 4321 |
| Elevation Ref: | [1] |
| Prominence Ft: | 701 |
| Isolation Mi: | 1.63 |
| Parent Peak: | Point 4380 |
| Map: | Utah#USA |
| Map Size: | 230 |
| Label Position: | top |
| Location: | Glen Canyon National Recreation Area Kane County, Utah, U.S. |
| Range: | Colorado Plateau |
| Coordinates: | 37.0155°N -111.4557°W |
| Coordinates Ref: | [2] |
| Topo: | USGS Warm Creek Bay |
| Rock: | Entrada Sandstone |
| Age: | Jurassic |
Castle Rock is a 4,321-foot (1,317 meter) elevation sandstone summit located in Glen Canyon National Recreation Area, in Kane County of southern Utah.[2] It is situated north of the town of Page, and northeast of the Wahweap marina. Castle Rock towers over 600 feet above Lake Powell, and becomes an island when the lake is full. This iconic landmark of the Lake Powell area is composed primarily of Entrada Sandstone.[3] This sandstone, which was originally deposited as sandy mud on a tidal flat, is believed to have formed about 160 million years ago during the Jurassic period as a giant sand sea, the largest in Earth's history.
According to the Köppen climate classification system, Castle Rock is located in an arid climate zone with hot, very dry summers, and chilly winters with very little snow.[4] Spring and fall are the most favorable seasons to visit.
These data are for the Wahweap climate station on Lake Powell, two miles southwest of Castle Rock.