FOREST LAKE DAM - NH00297-3442
Dam Name: FOREST LAKE DAM
State: NH
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 07/18/2021
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: High Reservoir Level
Incident Mechanism 2Overtopping
Incident Mechanism 3Erosion
Incident IDNH00297-3442
Incident DescriptionHeavy rainfall resulted in overtopping of the dam causing erosion adjacent to the concrete spillway
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)Unknown
ResponseDam was sandbagged until waters receeded
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeP
Dam TypeREST
Primary Purpose(s)R
EAPNR
Dam Height8 ft
Max Storage (ac-ft)378.00
Surface Area (acres)93.00
Year Completed1925
NID NumberNH00297
River NameTR ASHUELOT RIVER
Latitude42.7988
Longitude-72.3697
Year Modified
Regulatory Agency(ies)NHDES DAM BUREAU
Incident Time
Incident Duration2 days
Incident Report ProducedYes
Information SourcesNHDES DAM BUREAU
