| Mount Hooper | |
| Elevation Ft: | 12349 |
| Elevation Ref: | [1] [2] |
| Prominence Ft: | 1469 |
| Prominence Ref: | [3] |
| Isolation Mi: | 3.61 |
| Isolation Ref: | [4] |
| Parent Peak: | Gemini (12,880 ft) |
| Etymology: | William Burchell Hooper |
| Listing: | Sierra Peaks Section |
| Map: | California#USA |
| Map Size: | 270 |
| Label Position: | bottom |
| Country: | United States |
| State: | California |
| Region: | Fresno |
| Region Type: | County |
| Part Type: | Protected area |
| Part: | John Muir Wilderness |
| Range: | Sierra Nevada |
| Coordinates: | 37.2922°N -118.8951°W |
| Coordinates Ref: | [5] |
| Topo: | USGS Florence Lake |
| Rock: | Granodiorite |
| Age: | Cretaceous |
| Type: | Fault block |
| First Ascent: | 1929 |
| Easiest Route: | via Selden Pass[6] |
Mount Hooper is a 12,349-foot (3,764 meter) high mountain summit located west of the crest of the Sierra Nevada mountain range in Fresno County of northern California, United States.[5] It is set within the John Muir Wilderness, on land managed by Sierra National Forest. It is situated west of Gemini, southwest of Seven Gables, and west-northwest of Mount Senger.[3] Hooper ranks as the 326th-highest summit in California,[4] and topographic relief is significant as the summit rises over 5000abbr=offNaNabbr=off above Florence Lake in approximately four miles. The John Muir Trail traverses the east slope of the mountain, providing an approach option.
The mountain was named by R. B. Marshall of the United States Geological Survey probably during the 1907–09 USGS survey, and officially adopted in 1911 by the U.S. Board on Geographic Names to honor Major William Burchell Hooper (October 8, 1836 – July 16, 1903), proprietor of the Occidental Hotel in San Francisco.[7] [5] Marshall also named nearby Rose Lake (one mile north) for Rosa Hooper, the daughter of William Hooper and sister of Selden Stuart Hooper, an assistant with the USGS from 1891 to 1898.[8] Selden Pass, which the John Muir Trail crosses, is one mile east of the peak and was also named by Marshall.
The first ascent of the summit was made in 1929 by Glen Dawson, William D. Horsfall, and John Nixon.[9] Today this peak draws climbing interest because it is included on the Sierra Peaks Section's peak bagging list.
According to the Köppen climate classification system, Mount Hooper is located in an alpine climate zone.[10] Most weather fronts originate in the Pacific Ocean, and travel east toward the Sierra Nevada mountains. As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snowfall onto the range. Precipitation runoff from this mountain drains into the San Joaquin River watershed.