Old Don Pedro Dam
The Don Pedro Dam, since 1971 also known as the Old Don Pedro Dam, was a dam across the Tuolumne River in Tuolumne County, California. The structure is currently flooded underneath Don Pedro Reservoir, which is formed by the New Don Pedro Dam.
It was a solid concrete gravity dam that was 283 ft (86 m) high, 1,000 ft (300 m) wide, 16 ft (4.9 m) thick at the crest, and 170 ft (52 m) thick at the base. It was completed in 1923 where the Tuolumne River had carved a narrow gorge with walls of solid rock about a mile (2 km) below Don Pedro Bar. The reservoir created by this dam contained 290,400 acre·ft (358,200,000 m3) of water when full, 14.3% of today's capacity.
A 15 megawatt power plant was part of the dam's original design, and two more 7500 kilowatt generators were added in 1926 for 30 megawatts total, just 15% of today's capacity. The old dam still exists about 1.5 mi (2.4 km) upstream from the new 1971 dam, and since the old dam topped out at just 580 ft (180 m) above sea level it is now under some 250 ft (76 m) of water when the new reservoir is full.

This is an excerpt from the article Old Don Pedro Dam from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Old Don Pedro Dam at en.wikipedia.org was accessed 5 times in the last 30 days. (as of: 07/23/2013)
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Don Pedro Dam - Wikipedia, the free encyclopedia
The Don Pedro Dam, since 1971 also known as the Old Don Pedro Dam, was a dam across the Tuolumne River in Tuolumne County, California. The structure is ...
en.wikipedia.org/wiki/Don_Pedro_Dam
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Old Don Pedro Dam | Don Pedro Lake
The Old Don Pedro Dam still exists at Don Pedro Lake. Some 220’ under the water of a full lake, the Old Don Pedro Dam is 1.5 miles upstream from the current dam’s ...
www.donpedrolake.com/content/old-don-pedro-dam
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Old Don Pedro Dam - Sierra Nevada Geotourism MapGuide
Over 200 feet below the water surface of a full Don Pedro Lake is the Old Don Pedro Dam. It was submerged when the new, larger earth-fill dam construction ...
www.sierranevadageotourism.org/content/old-don-pedro-dam/sie6C862EA58B17D422E
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Aerial view of the disappearing old Don…
The new Don Pedro Dam is visible on the lower right side of this photograph. Built a mile and a half downstream from the Old Don Pedro Dam, it was planned to submerge ...
content.cdlib.org/ark:/13030/kt9t1nd5wx/?layout=metadata
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About | Don Pedro Lake
The 'New' was formally dropped from its name after the old dam was inundated by the waters of the larger reservoir. Today, it is known simply as the Don Pedro ...
www.donpedrolake.com/about
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Jacksonville to be Flooded Under New Don Pedro Dam - DIVA - San ...
Includes views of Jacksonville and an interview with an engineer, who explains that water from the Old Don Pedro Dam will be transferred into the New Don ...
diva.sfsu.edu/collections/sfbatv/bundles/191578
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History of Lake Don Pedro, California - Lake Don Pedro Marina
History of Lake Don Pedro, California, near Yosemite National Park. ... The old dam is still in place, but 250 feet below water. The present earth and rock fill dam ...
lakedonpedromarina.com/destination/history/
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Greening of Paradise Valley - Chapter 17 - Modesto Irrigation District
The following day, releases from "old" Don Pedro were halted and a 40-foot high, 160-foot long coffer dam was thrown across the river. Diversions of the water ...
www.mid.org/about/history/chpt_17.html
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Don Pedro Dam - Civil and Environmental Engineering - UC Davis
cee.engr.ucdavis.edu/faculty/lund/dams/Don%20Pedro/donpedro.htm
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Old Don Pedro Dam | Tuolumne Area History
Oct 17, 2012 ... Old Don Pedro Dam. 1969 Floodwaters flowing over the spillway. The old dam's fate is sealed with the start of construction on. new Don Pedro ...
tuolumnehistory.blogspot.com/2012/10/old-don-pedro-dam.html
Search results for "Old Don Pedro Dam"
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Old Don Pedro Dam in science
Don Pedro Dam - Wikipedia, the free encyclopedia
Don Pedro Dam. OldDonPedroDam.jpg. Old Don Pedro Dam and reservoir, circa 1925. Official name, Old Don Pedro Dam. Location, Tuolumne County ...
New Don Pedro Dam - Wikipedia, the free encyclopedia
After selling revenue bonds totaling $4.1 million, the two irrigation districts began construction of the Don Pedro Dam (now known as Old Don Pedro Dam) in ...
Aerial view of the disappearing old Don Pedro Dam, circa 1971.
Built a mile and a half downstream from the Old Don Pedro Dam, it was planned to submerge the old dam in the enlarged ... Calisphere University of California.
Jacksonville to be Flooded Under New Don Pedro Dam - DIVA - San ...
Includes views of Jacksonville and an interview with an engineer, who explains that water from the Old Don Pedro Dam will be transferred into the New Don ...
Don Pedro Reservoir - Wikipedia, the free encyclopedia
Also referenced as Don Pedro Lake when the name is qualified, the first projects in 1923 are generally referred to as the Old Don Pedro Dam and reservoir, and ...
Books on the term Old Don Pedro Dam
Turlock
Turlock
Kristen Santos, Phyllis Sonderstrom, Thea Sonntag Harris, 2003
This phoro provides one lasr look ar Old Don Pedro Dam. On November 2, 1970, rhe suires on rhe face of rhe dam were opened for rhe lasr rime. Warer flowing our of old Don Pedro began ro creare rhe new reservoir behind rhe new Don ...
Imperial Dreams: Tracking the Imperial Woodpecker Through the Wild Sierra Madre
Imperial Dreams: Tracking the Imperial Woodpecker Through the Wild Sierra Madre
Tim Gallagher, 2013
Explorer and naturalist Tim Gallagher is obsessed with rare birds. A decade ago, Gallagher was one of the rediscoverers of the legendary ivory-billed woodpecker, which most scientists believed had been extinct for more than half a century—an event that caused an international stir. Now, in Imperial Dreams, Gallagher once again hits the trail, journ...
Engineering World: A Journal of Engineering and Construction
Engineering World: A Journal of Engineering and Construction
1922
Modesto and Turlock districts have old, established irrigation systems, the water for which is drawn from Tuolumne ... So the two districts joined forces to construct the Don Pedro dam, not only to store water but to produce hydroelectric power.
Much Ado About Nothing (Signet Classics)
Much Ado About Nothing (Signet Classics)
William Shakespeare, 1998
The work of the world's greatest dramatist is edited by outstanding scholars and presented here, along with an extensive overview of Shakespeare's life, world and theater, a special note on the sources from which Shakespeare derived this work, dramatic criticism, commentaries, and much more.
Historic Spots in California
Historic Spots in California
1990
In August 1850 the work was resumed, and after 59 days of hard labor the dam was completed — only to be washed ... Along that part of the old channel now covered by Lake Don Pedro lay the bars of Don Pedro, Indian, and Red Mountain .
Lost City of the Incas (Phoenix Press)
Lost City of the Incas (Phoenix Press)
Hiram Bingham, 2003
A special illustrated edition of Hiram Bingham's classic work captures all the magnificence and mystery of the amazing archeological sites he uncovered. Early in the 20th century, Bingham ventured into the wild and then unknown country of the Eastern Peruvian Andes--and in 1911 came upon the fabulous Inca city that made him famous: Machu Picch...
Reservoir Release Requirements for Fish at the New Don Pedro ...
Reservoir Release Requirements for Fish at the New Don Pedro ...
1996
At La Grange Reservoir, (1,500 miz) a sedimentation rate of 40 m3/km2/yr was measured from 1895-1905; at (old) Don Pedro Reservoir, a sediment yield of 152 m3/km2/yr was measured from l923—l945 (Dendy and Champion 1973).
Historic Spots in California: Valley and Sierra Counties
Historic Spots in California: Valley and Sierra Counties
Hero Eugene Rensch, Ethel Grace Rensch, Mildred Brooke Hoover, 1933
Along that part of the old channel now covered by the Don Pedro Reservoir lay the bars of Don Pedro, Indian, and Red Mountain. From one claim at Don Pedro's Bar, gold valued at $100,000 was taken out before 1889, the cost of operation ...
Dam!: Water, Power, Politics, and Preservation in Hetch Hetchy and Yosemite National Park
Dam!: Water, Power, Politics, and Preservation in Hetch Hetchy and Yosemite National Park
John W. Simpson, 2005
A vivid account of America’s first environmental cause célèbre, which illuminates our attitudes toward fundamental questions of growth, development, and our place in nature.The building of the O’Shaughnessy Dam and Hetch Hetchy Reservoir in the middle of Yosemite National Park–despite the availability of less expensive, less technically challenging...
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Blog posts on the term
Old Don Pedro Dam
Tuolumne Area History: Old Don Pedro Dam
tuolumnehistory.blogspot.com/2012/10/old-don-pedro-dam.html
Tuolumne River Trust - LaGrange Dam catches the eye of government
www.tuolumne.org/content/article.php/20130102091549292
Fishing in Don Pedro Reservoir - Tuolumne County-Fun Places California-Things To Do in California
Things To Do in California-Don Pedro Reservoir is an artificial lake formed by the construction of Don Pedro Dam, directly across the Tuolumne River in Stanislaus National Forest in the foothills of Sierra Nevada. La Grange and Moccasin, California are communities near by the lake. Also known as Don Pedro Lake, the first projects in 1923 are generally referred to as the Old Don Pedro Dam and reservoir, and the 1971 upgrades are the New Don Pedro Dam and reservoir.
funplacescalifornia.com/fishing/fishing-in-don-pedro-reservoir-tuolumne-county-fishing/
Old Don Pedro Fire Contained - myMotherLode.com
Crews have contained a vegetation fire near the Don Pedro reservoir.
www.mymotherlode.com/news/local/1357675/Old-Don-Pedro-Fire-Contained.html
Jacksonville and Chinese Camp | My Gold Rush Tales
A stone dam was built across the river and a canal 2380 feet long dug around it, but the rains came and the whole enterprise was swept away.
mygoldrushtales.com/2011/07/26/chinese-camp-and-jacksonville-2/
Paddle to the Sea: Don Pedro Passage
Just four days after being towed into Moccasin Marina at the end of our rafting trip, I found myself getting ready again to put back onto the river. The contrast between these two days couldn't have been greater.
paddletothesea2010.blogspot.com/2010/05/don-pedro-passage.html
Lake Don Pedro and the Tuolumne River & San Joaquin River Basin: Lake Don Pedro and the Tuolumne River & San Joaquin River and Valley
http://foreverhouseboats. com/newsletter/May2009 Before 1923, the area now known as Lake Don Pedro was not a lake as we know it today.
lakedonpedrogeo5.blogspot.com/2012/11/lake-don-pedro-and-tuolumne-river-san.html
Century-Old Battle Over Yosemite's 'Second Valley' Heats Up | QUEST
One of California's oldest environmental battles is on the San Francisco ballot. Hetch Hetchy Valley in Yosemite National Park holds most of San Francisco's water supply. But some environmental groups want to turn back the clock.
science.kqed.org/quest/audio/century-old-battle-over-yosemites-second-valley-heats-up/
Utah State Today - Utah State University News
News and information source for Utah State University.
www.usu.edu/ust/index.cfm?article=50923
Merced woman's body pulled from Don Pedro Reservoir | Social Media | Merced Sun-Star
Tuolumne County sheriff’s officials this morning released the name of a 25-year-old Merced woman found dead in Don Pedro Reservoir on Tuesday.
www.mercedsunstar.com/2011/06/29/1950864/merced-womans-body-pulled-from.html
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