Community members, Bureau of Reclamation employees and state and federal leaders cut the ribbon during the dedication of the new Teton Dam Commemorative Overlook near the former Teton Dam site in eastern Idaho on June 5, 2026.
On June 5, the Bureau of Reclamation’s Columbia–Pacific Northwest Region, Upper Snake Field Office held a commemoration ceremony for the 50th anniversary of the Teton Dam Failure and the evolution of Dam Safety program. The ceremony was held in collaboration with the Teton Recreation Coalition partners and concluded with a ribbon cutting for the new interpretive panels and revamped overlook at the dam site.
Fifty years ago, the Teton Dam in southeastern Idaho suffered a catastrophic failure. Bulldozer operators attempted to plug seepage holes, but a torrent of water ripped through the dam, releasing one million cubic feet per second of water. Downstream communities were battered by flood waters and debris. The end result was the loss of 11 lives and millions in property damage to the surrounding communities.
“The disaster reshaped towns and families across the valley,” said Roland Springer, acting regional director for Reclamation’s Columbia–Pacific Northwest Region. “The impact of that day will never be forgotten.”
The commemoration had over 100 attendees from city, county, state, and federal groups; local organizations; and victims’ families. Many people attending still vividly remembered the day the dam failed.
Idaho Lt. Governor Scott Bedke, Reclamation Senior Advisor Linnea Melbye, Reclamation Dam Safety Chief Peggy Mott, and Idaho Water Resource Board Chairman Jeff Raybould provided remarks. The event concluded with a Vintage War Plane flyover in the Missing Man formation at 11:57 a.m.—the time the dam failed.
The dam failure was a catalyst for the creation of Reclamation’s Dam Safety program.
“From Teton, we learned that dam safety must be rooted in more than engineering assumptions,” said Peggy Mott. “It requires a deep understanding of site conditions, continual reassessment of risks, and the courage to evolve as we learn more.”
As part of the Safety of Dams Program, Reclamation experts conduct regular inspections and use advanced monitoring techniques to ensure that Reclamation dams do not present unacceptable risks to the public, property, or the environment.
The new overlook site has interpretive panels that tell the story of the disaster, the response, and the creation of the Dam Safety program. Together with local partners and Reclamation staff, Department of the Interior Illustrator Jordynn Eld designed the new interpretive panels.
“As we stand here—overlooking the landscape where so much was lost—we reaffirm our responsibility to the public we serve,” said Linnea Melbye. “We remember the people at the heart of this history. And, we reaffirm our enduring commitment to protect the public, to remember the lessons Teton taught us, and to ensure that the events of that day are not repeated.”
For more information on the Teton Dam Failure, please visit the Teton Dam History webpage. 
