SHELBURNE - NH00052-1148

Dam Name: SHELBURNE
State: NH
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 08/28/2011
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident IDNH00052-1148
Incident DescriptionHigh flows overtopped the dam,eroded abutments and downstream of cutoff walls and flooded powerhouse
Named Hydrologic EventIrene
EAP Enacted (Y/N) due to Incident
Fatalities (Number)
Number of People Evacuated0
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsBridges
Economic Damages (in $)
Response
Volume released at failure (ac-ft)0
Additional Remarks or UpdatesLost power generation from dam. Minor damage to North Road bridge immediately downstream of dam.
Short term closing of North Road bridge due to overtopping
Owner TypeP
Dam TypeCNPG
Primary Purpose(s)HC
EAPNR
Dam Height17 ft
Max Storage (ac-ft)960.00
Surface Area (acres)210.00
Year Completed1906
NID NumberNH00052
River NameANDROSCOGGIN RIVER
Latitude44.4042
Longitude-71.1157
Year Modified

1990

Regulatory Agency(ies)NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU
Incident Time
Incident Duration
Incident Report Produced
Information Sources
AttachmentsY