Case Studies

Anita Dam (Montana, 1997)

Anita Dam is located about 22 miles north of Chinook, Montana, about 5 miles south of the Canadian border. The drainage, which normally flows only in response to snowmelt or heavy rain, is an unnamed tributary…
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Austin (Bayless) Dam (Pennsylvania, 1911)

Austin Dam (also known as Bayless Dam) was constructed between May and November of 1909 just outside Austin, Pennsylvania, a town of approximately 2,500 people in Potter County.
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Baldwin Hills Dam (California, 1963)

The Baldwin Hills Reservoir was constructed in 1951 to provide water to the south and southwest portions of the city of Los Angeles, California. Sitting atop one of the tallest hills in the region, the reservoir was confined on three sides by compacted earth dikes…
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Big Bay Lake Dam (Mississippi, 2004)

A number of the site conditions, design and construction details, and the distress indicators that developed between the initial reservoir filling and failure combine to suggest a complex internal erosion…
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Buffalo Creek Dam (West Virginia, 1972)

On February 26, 1972 at approximately 8:00 A.M., Coal Slurry Impoundment #3 at the Buffalo Creek coal mine in Logan County, West Virginia gave way sending millions of gallons of water and millions of cubic yards of coal slurry down the Buffalo Creek. Over the next three hours…
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Canyon Lake Dam (South Dakota, 1972)

The Friday afternoon of June 9, 1972 was the beginning of a tragedy for Rapid City, South Dakota along the eastern slopes of the Black Hills mountain range. Scattered showers from the previous days had left the ground saturated while a low-level air mass…
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Castlewood Canyon Dam (Colorado, 1933)

Castlewood Canyon Dam was constructed in 1890 across Cherry Creek, 40 miles southeast of Denver, Colorado. The masonry and rock-fill structure, built from local materials, was around 600 feet long with a height of 70 feet measured…
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Folsom Dam (California, 1995)

Located approximately 20 miles northeast of Sacramento, California, Folsom Dam was designed and constructed by the U.S. Army Corps of Engineers to generate hydropower along the American River. The 340-foot high concrete gravity Folsom Dam along with two earthen wing dikes…
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Fontenelle Dam (Wyoming, 1965)

Fontenelle Dam is located on the Green River near La Barge, Wyoming and was originally built in 1964 to provide irrigation water and hydropower for a region of southwest Wyoming. The earthfill embankment structure…
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Kelly Barnes Dam (Georgia, 1977)

Kelly Barnes Dam was located approximately a half mile upstream (north) of Toccoa Falls Bible College in Stephens County, Georgia. Toccoa Falls, a 186-foot-high waterfall, was located between the dam and the college. The dam site was originally the location…
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Lake Delhi Dam (Iowa, 2010)

Lake Delhi Dam was originally constructed by the Interstate Power Company between 1922 and 1929 for hydroelectric power generation. The dam is located in Iowa approximately 1.4 miles south of Delhi on the Maquoketa River and impounds the nine-mile-long Lake Delhi. Reaching a maximum height…
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Laurel Run Dam (Pennsylvania, 1977)

Constructed between 1915 and 1918, Laurel Run Dam was a rockfill dam erected across Laurel Run near Johnstown, Pennsylvania. It was built to replace a smaller dam in order to provide water for drinking and industrial needs…
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Lawn Lake Dam (Colorado, 1982)

Lawn Lake Dam was located in Rocky Mountain National Park upstream of Estes Park, Colorado. It was an embankment dam and constructed in 1903 and owned by an irrigation company.  It fell within the National Park Boundary…
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Malpasset Dam (France, 1959)

Malpasset Dam was a concrete arch dam located on the Riveria in the Cannes District near Fréjus, in Southern France. Exhibiting curvature in both the plan and section directions, the double-curvature arch structure spanned the Reyran River. At the time of completion in 1954, it was reported…
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Mammoth Dam (Utah, 1917)

In 1902 the Price River Irrigation Company proposed to build a dam on Gooseberry Creek about 80 miles SE of Salt Lake City, UT. It would be an earthfill structure with a height of 100 feet. An outlet tunnel through bedrock…
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Marshall Lake Dam (Colorado)

Routine inspections of Marshall Lake Dam in the early 21st century were relatively uneventful. The 75-foot-tall, 2,400-foot-long high hazard earth embankment dam had relatively flat slopes…
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Penn Forest Dam (Pennsylvania, 1994)

Penn Forest Dam was constructed between 1956 and 1958 to be one of the main water supply reservoirs for the city of Bethlehem, Pennsylvania. The dam was originally an earthfill embankment structure, stood 145 feet high, 1,930 feet long, and stored 6.4 billion gallons of water…
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Prospect Dam (Colorado, 1980)

Prospect Reservoir Dam is owned by the Henrylyn Irrigation District (District) and is located in Weld County (County), Colorado approximately 40 miles northeast of Denver.  The District operates and maintains a fifty mile long canal system, 4 reservoirs, and several hundred miles of…
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South Fork Dam (Pennsylvania, 1889)

South Fork Dam was an earth- and rock-fill dam located about 8 miles east of Johnstown, PA. Originally constructed in 1852, the dam’s primary purpose was to provide a source of water for a division of the Pennsylvania Canal. The dam was approximately 72 feet high…
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St. Francis Dam (California, 1928)

Located approximately forty miles northwest of Los Angeles, California, St. Francis Dam was a curved concrete gravity dam constructed between 1924 and 1926 in order to provide a storage reservoir for the Los Angeles Aqueduct system…
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Aerial view of original Taum Sauk Reservoir after failure showing the 656 ft breach.

Taum Sauk Dam (Missouri, 2005)

Taum Sauk Pump Storage Plant was constructed by United Electric in Reynolds County, Missouri between 1960 and 1962 to provide a means of hydroelectric power generation during peak demand periods. The plant consisted of an Upper Reservoir situated atop Proffit Mountain…
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Teton Dam (Idaho, 1976)

Teton Dam was located in southeastern Idaho about 15 miles from Rexburg in the valley of the Teton River. The dam and its reservoir were the principal elements of the Teton Basin Project designed by the Bureau of Reclamation to control flooding as well as provide a source of…
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Tous Dam (Spain, 1982)

Tous Dam is located in the Province of Valencia in the southeast corner of Spain, near the Mediterranean Coast. The dam is the last flood control structure on the Júcar River Basin, an 8,340-square-mile drainage. The Júcar River Basin ranges dramatically between sea level…
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