VILAS POOL DAM - NH00009-3439
Dam Name: VILAS POOL DAM
State: NH
Downstream Hazard Potential: S
Incident Type: Non-Failure
Incident Date: 07/29/2021
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: High Reservoir Level
Incident Mechanism 2Overtopping
Incident Mechanism 3Insufficient Spillway Capacity
Incident IDNH00009-3439
Incident DescriptionLeft abutment wall overtopped during excess rainfall event and flowed down state road. Down slope flood waters re-entered the downstream channel and eroded the roadway and bank.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentUnknown
Fatalities (Number)
Number of People EvacuatedUnknown
Number of Habitable Structures EvacuatedUnknown
Number of Habitable Structures FloodedUnknown
Other Infrastructure ImpactsRoads
Economic Damages (in $)Unknown
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesNH Route 123A flooded, undermined, and collapsed. NHDOT is working to repair road and with the Town (owner) potential solutions to prevent overtopping of the abutment wall in the future.
Owner TypeL
Dam TypeCN
Primary Purpose(s)R
EAPY
Dam Height31 ft
Max Storage (ac-ft)72.00
Surface Area (acres)6.00
Year Completed1925
NID NumberNH00009
River NameCOLD RIVER
Latitude43.1536
Longitude-72.3488
Year Modified
Regulatory Agency(ies)NHDES DAM BUREAU
Incident Time
Incident Duration2 days
Incident Report ProducedUnknown
Information SourcesNHDES DAM BUREAU
