MAMMOTH DAM - UT00000-205

Dam Name: MAMMOTH DAM
State: UT
Downstream Hazard Potential: H
Incident Type: Failure
Incident Date: 06/24/1917
Incident Driver: Other
Incident Mechanism 1: Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident IDUT00000-205
Incident DescriptionDam overtopped scouring away the downstream shell and toppling of the center concrete wall.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)0
Number of People EvacuatedUNKNOWN
Number of Habitable Structures EvacuatedUNKNOWN
Number of Habitable Structures FloodedUNKNOWN
Other Infrastructure ImpactsRailroads
Economic Damages (in $)$1 million to $5 million
Response
Volume released at failure (ac-ft)11000
Additional Remarks or UpdatesFaulty Construction. earth-fill over a buttressed concrete core; designed to be heightened in 10-foot steps; by late 1915, its height had reached 67 feet
Denver & Rio Grande Railroad, Roads, Bridges, other utilities damaged
https://damfailures.org/case-study/mammoth-dam-utah-1917/
Owner TypeP
Dam TypeRECN
Primary Purpose(s)I
EAP
Dam Height67 ft
Max Storage (ac-ft)
Surface Area (acres)0.00
Year Completed0
NID NumberUT00000
River NameGOOSEBERRY CREEK
Latitude39.7157
Longitude-111.299
Year Modified
Regulatory Agency(ies)
Incident Time
Incident Duration
Incident Report ProducedYES
Information Sources
Attachments