O’Shaughnessy Dam
O'Shaughnessy Dam is a 430-foot-high concrete arch-gravity dam in Tuolumne County, California, United States. It impounds the Tuolumne River, forming the Hetch Hetchy Reservoir at the lower end of Hetch Hetchy Valley in Yosemite National Park, about 160 miles east of San Francisco.Photo: Wikimedia, Public domain.
- Type: Dam
- Description: dam in Tuolumne County, California, USA
- Also known as: “Hetch Hetchy Dam”, “O Shaughnessy 9-005 Dam”, “O’Shaughnessy 9-005 Dam”, and “O’Shaugnessy Dam”
Places of Interest Nearby
Highlights include Tueeulala Falls and Kolana Rock.
Tueeulala Falls
Waterfall
Photo: Epachamo, Public domain.
Tueeulala Falls is located on the north side of Hetch Hetchy Valley in Yosemite National Park. At roughly 880 feet it is the smaller of two large waterfalls that spill into Hetch Hetchy Reservoir, the other being Wapama Falls.
Kolana Rock
Peak
Kolana Rock is a prominent granite dome located along the southern edge of Hetch Hetchy Valley in Yosemite National Park. John Muir stated that Kolana was the Indian name for the rock. Kolana Rock is situated 1½ miles east of O’Shaughnessy Dam.
Wapama Falls
Waterfall
Photo: Inklein, CC BY-SA 3.0.
Wapama Falls is the larger of two waterfalls located on Falls Creek on the northern wall of Hetch Hetchy Valley below Hetch Hetchy Dome, in Yosemite National Park. Wapama Falls is situated 2 miles northeast of O’Shaughnessy Dam.
Places in the Area
Nearby places include Mather.
Mather
Hamlet
Mather is an unincorporated community in Tuolumne County, California, United States. Mather is 33 miles west of Tioga Pass. The community is named after Stephen Tyng Mather, who directed the National Park Service from 1917 to 1929. Mather is situated 6 miles southwest of O’Shaughnessy Dam.
O’Shaughnessy Dam
- Category: gravity dam
- Location: Tuolumne County, Gold Country, California, United States, North America
- View on OpenStreetMap
Latitude
37.94745° or 37° 56′ 51″ northLongitude
-119.78826° or 119° 47′ 18″ westElevation
3,622 feet (1,104 metres)Operator
City of San Fransisco WaterOpen location code
8592W6W6+XMOpenStreetMap ID
way 189656737OpenStreetMap feature
waterway=damGeoNames ID
5378218Wikidata ID
Q7071958
This page is based on OpenStreetMap, GeoNames, Wikidata, Wikimedia Commons, and Wikipedia.
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Satellite Map
Discover O’Shaughnessy Dam from above in high-definition satellite imagery.
In Other Languages
From Cebuano to Japanese—“O’Shaughnessy Dam” goes by many names.
- Cebuano: “O’Shaughnessy Dam (alihan sa tubig sa Estados Unidos, California)”
- Cebuano: “O’Shaughnessy Dam”
- Chinese: “奥沙尼西大坝 (加利福尼亞州)”
- Chinese: “奥沙尼西大坝”
- Chinese: “奧沙尼西大壩 (加利福尼亞州)”
- French: “barrage O’Shaugnessy”
- French: “Barrage O’Shaugnessy”
- French: “O’Shaughnessy Dam”
- Hebrew: “סכר אושונסי”
- Irish: “Damba Uí Sheachnasaigh”
- Japanese: “オーショネシー・ダム (カリフォルニア州)”
Places with the Same Name
Discover other places named “O’Shaughnessy Dam”.
Localities in the Area
Explore places such as Abernathy Meadow and Harden Gardens.
Nearby Places
Explore places such as Hetch Hetchy Reservoir at Hetch Hetchy and Hetch Hetchy Boathouse.
Tuolumne County: Must-Visit Destinations
Delve into Sonora, Columbia, Jamestown, and Twain Harte.
Curious Dams to Discover
Uncover intriguing dams from every corner of the globe.