San Carlos in Gila County, Arizona — The American Mountains (Southwest)

The Coolidge Dam

March 13, 2015

1. The Coolidge Dam Marker

Inscription.

The Coolidge Dam. . Built by The United States of America Department of Interior Bureau of Indian Affairs Irrigation Service, Calvin Coolidge President of the United States of America. Roy O. West Secretary of the Interior . Hubert Work Secretary of the Interior . Charles H. Burke Commissioner of Indian Affairs . Edgar B. Merritt Ass't Commissioner of Indian Affairs . S.J. Flickinger Chief Irrigation Division . H.V. Clotts Chief Engineer . W.M. Reed Chief Engineer, Personnel. C.R. Olberg Assistant Chief Engineer in Charge . C.H. Southworth Construction Engineer . H.C. Neuffer Designing Engineer . J.A. Fraps Assistant Designing Engineer . M.R. Trenam Assistant Designing Engineer . E.L. Rose Electrical Engineer . Allan Sickler Assistant Electrical Engineer . R.H. Rupkey Assistant Engineer . K.M. Fisher Instrumentman . Elvin Johnson Chief Inspector . Christian Bottinger Chief Inspector . Bruce Johnston Testing Inspector . C.L. Shotwell Disbursing Agent . John F. Truesdell Counselor Consulting Engineers. Gen. W.C. Langfitt . A.J. Wiley . F.A. Noetzli . L.C. Hill . Barry Dibble . P.O. Wright Architect, Atkinson, Kier Bros., Spicer Company Lynn Atkinson - Elmer Kier - Ernest Kier - C.A. Spicer Contractors, Personnel. J. C. Tripp General Superintendent. Charles G. Clapp Asst. Sup't . Huso Festich Excavation Sup't . James F. Hurst Concrete Sup't . F. F. Hassell Steel Placing Sup't . S. S. Atkin Office Manager . F.A. Wright Contractors Eng'r . Johhn C. Moore Carpentry Sup't . Ellis M. Shimiel Gravel Plant Sup't . Ernest Wallin Rigging Sup't . Neil Gibbons Chief Timekeeper H.B. Hulm Auditor, Date Work Commenced - January 1927 . First Concrete Placed - November 24, 1927 . Dam Construction Completed - October 25, 1928 . Elevation of Base of Dam - 2286 . Elevation of Roadway - 2536 . Height Above Bedrock - 250 feet . Reservoir Capacity - 1,200,000 acre feet . Foundation Rock and Spillway Excavation - 317,000 cu. yds. . Total Concrete Placed in Structure - 204,000 cu. yds. . Reinforcing Steel Required - 3,500 tons . Length of Central Buttress at Base - 270 feet . Maximum Span of Domes - 180 feet . Total Overall Length of Structure Including Spillways - 920 ft., Dedicated by Calvin Coolidge March 4, 1930..

Built by
The United States of America
Department of Interior
Bureau of Indian Affairs
Irrigation Service

Calvin Coolidge
President of the United States of America
Roy O. West Secretary of the Interior • Hubert Work Secretary of the Interior • Charles H. Burke Commissioner of Indian Affairs • Edgar B. Merritt Ass't Commissioner of Indian Affairs • S.J. Flickinger Chief Irrigation Division • H.V. Clotts Chief Engineer • W.M. Reed Chief Engineer

Personnel C.R. Olberg Assistant Chief Engineer in Charge • C.H. Southworth Construction Engineer • H.C. Neuffer Designing Engineer • J.A. Fraps Assistant Designing Engineer • M.R. Trenam Assistant Designing Engineer • E.L. Rose Electrical Engineer • Allan Sickler Assistant Electrical Engineer • R.H. Rupkey Assistant Engineer • K.M. Fisher Instrumentman • Elvin Johnson Chief Inspector • Christian Bottinger Chief Inspector • Bruce Johnston Testing Inspector • C.L. Shotwell Disbursing Agent • John F. Truesdell Counselor
Consulting Engineers Gen. W.C. Langfitt • A.J. Wiley • F.A. Noetzli • L.C. Hill • Barry Dibble • P.O. Wright Architect

Atkinson, Kier Bros., Spicer Company
Lynn Atkinson - Elmer Kier - Ernest Kier - C.A. Spicer Contractors

Personnel J.

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C. Tripp General Superintendent Charles G. Clapp Asst. Sup't • Huso Festich Excavation Sup't • James F. Hurst Concrete Sup't • F. F. Hassell Steel Placing Sup't • S. S. Atkin Office Manager • F.A. Wright Contractors Eng'r • Johhn C. Moore Carpentry Sup't • Ellis M. Shimiel Gravel Plant Sup't • Ernest Wallin Rigging Sup't • Neil Gibbons Chief Timekeeper H.B. Hulm Auditor

Date Work Commenced - January 1927 • First Concrete Placed - November 24, 1927 • Dam Construction Completed - October 25, 1928 • Elevation of Base of Dam - 2286 • Elevation of Roadway - 2536 • Height Above Bedrock - 250 feet • Reservoir Capacity - 1,200,000 acre feet • Foundation Rock and Spillway Excavation - 317,000 cu. yds. • Total Concrete Placed in Structure - 204,000 cu. yds. • Reinforcing Steel Required - 3,500 tons • Length of Central Buttress at Base - 270 feet • Maximum Span of Domes - 180 feet • Total Overall Length of Structure Including Spillways - 920 ft.

Dedicated by
Calvin Coolidge
March 4, 1930.

Erected 1930 by Bureau of Indian Affairs, U.S. Department of the Interior.

Topics and series. This historical marker is listed in these topic lists: Charity & Public Work • Industry & Commerce

Courtesy Water Archive dot Org Flickr Collection, circa 1935

2. The Coolidge Dam Marker

• Waterways & Vessels. In addition, it is included in the Former U.S. Presidents: #30 Calvin Coolidge series list. A significant historical month for this entry is January 1927.

Location. 33° 10.529′ N, 110° 31.746′ W. Marker is in San Carlos, Arizona, in Gila County. Marker is on Coolidge Dam Road (Route 3) 9 miles south of US 70 (U.S. 70), on the right. Watch for San Carlos Lake signs approaching the Peridot off-ramp. Head south on Coolidge Dam Road approximately 9 miles. Touch for map. Marker is in this post office area: San Carlos AZ 85550, United States of America. Touch for directions.

More about this marker. Marker is located on the SW light stanchion of the dam's roadway.

Also see . . . Wikipedia - Coolidge Dam. (Submitted on March 15, 2015.)

Original Coolidge Dam Interpretive Sign image. Click for full size.

Courtesy Water Archive dot Org Flickr Collection, circa 1930

3. Original Coolidge Dam Interpretive Sign

Coolidge Dam image. Click for full size.

Courtesy Water Archive dot Org Flickr Collection, circa 1935

4. Coolidge Dam

View from east

Courtesy Water Archive dot Org Flickr Collection, circa 1935

5. Coolidge Dam

View north

Coolidge Dam, 2015 image. Click for full size.

Photographed By Doris Hyeoma, March 13, 2015

6. Coolidge Dam, 2015

View from west

A Coolidge Dam Eagle image. Click for full size.

Photographed By Doris Hyeoma, March 13, 2015

7. A Coolidge Dam Eagle

San Carlos Reservoir, March 2015 image. Click for full size.

Photographed By Doris Hyeoma, March 13, 2015

8. San Carlos Reservoir, March 2015

Credits. This page was last revised on August 16, 2020. It was originally submitted on March 15, 2015. This page has been viewed 590 times since then and 39 times this year. Photos: 1, 2, 3, 4, 5, 6, 7, 8. submitted on March 15, 2015. • Syd Whittle was the editor who published this page.