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Clamshell Peak, California

Prominence: 280 ft, 85 m

Elevation: 4360+ feet, 1329+ meters

True Isolation: 0.41 mi, 0.66 km

Elevation Info:	Elevation range: 4360 - 4400 ft (40-foot closed contour) NAVD88 Elevation: 4363 ft / 1330 m (Range 4363 - 4403 ft)
Latitude/Longitude (WGS84)	34° 12' 6'' N, 117° 59' 53'' W 34.201576, -117.998152 (Dec Deg) 408039 E 3784957 N, Zone 11 (UTM)
Country	United States
State/Province	California
County/Second Level Region	Los Angeles
Links Search Engines - search the web for "Clamshell Peak": Wikipedia Search Microsoft Bing Search Google Search Yahoo Search Other Web Sites Clamshell Peak at ListsOfJohn.com Weather and Snow National Weather Service Forecast NOAA Snow Depth Map Lists that contain Clamshell Peak: Sierra Club Lower Peaks Committee (Rank #20)
Ascent Info Total successful ascents logged by registered Peakbagger.com users: 121 Show all viewable ascents/attempts (Total: 113) Selected Trip Reports from this site: 2007-01-15 by Bob Burd 2008-12-28 by Srikant Jayaraman 2011-10-24 by Sean Green 2013-01-13 by Marit Chrislock-Lauterbach 2013-03-13 by Patrick ONeill (GPS Track) 2013-12-21 by Gil Barron 2014-04-24 by Winnette Butler 2014-05-16 by Pat Wells (Unsuccessful) 2014-06-27 by Keith Winston (GPS Track) 2015-03-20 by Greg Gerlach (GPS Track) 2016-05-01 by Trevor Kent 2017-08-18 by David Comerzan 2018-02-08 by Pat Wells 2019-01-06 by Garrett McLean (GPS Track) 2019-02-12 by Mike Maki (GPS Track) 2020-02-17 by Gordon Jenkins (GPS Track)
Nearby Peak Searches: Radius Search - Nearest Peaks to Clamshell Peak Elevation Ladder from Clamshell Peak Prominence Ladder from Clamshell Peak

View south from Clamshell of the San Gabriel Valley (2019-02-12). Photo by Mike Maki. Click here for larger-size photo.
Web Map Links	Peakfinder Panorama GeoHack Links CalTopo MyTopo Bing Maps Google Maps Open Street Map
Prominence	Key Col Page (Detailed prominence information) Clean Prominence: 280 ft/85 m Optimistic Prominence: 360 ft/109 m Key Col: 4080 ft/1244 m
Isolation	Isolation Page (Detailed isolation information) Distance: 0.41 mi/0.66 km Isolation Limit Point: 34.2042, -117.9917 Nearest Higher Neighbor in the PBC database: Rankin Peak (ENE)
Ranges	Continent: North America Range2: Pacific Ranges Range3: Central and Southern California Ranges Range4: Transverse Ranges Range5: San Gabriel Mountains
Drainage Basins	Los Angeles Pacific-Western USA Pacific Ocean
Ownership	Land: Angeles National Forest
Topo Map	Azusa O34117b8 1:24,000
Data Source	1:25,000 (or larger) Topographic Survey Map
Dynamic Map Clamshell Peak Other Peaks Click Here for a Full Screen Map

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