Ledoux Dam - NH01058-3444
Dam Name: Ledoux Dam
State: NH
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 11/05/2021
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Excessive/Increased Seepage
Incident Mechanism 2Animal Activity
Incident Mechanism 3Vegetation
Incident IDNH01058-3444
Incident DescriptionOwner noted concentraed leakage midslope.
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
ResponsePond was pumped down until embankment could be repaired.
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeP
Dam TypeRE
Primary Purpose(s)R
EAPNR
Dam Height11 ft
Max Storage (ac-ft)9.00
Surface Area (acres)1.00
Year Completed1936
NID NumberNH01058
River NameUnnamed
Latitude43.0177
Longitude-71.4263
Year Modified
Regulatory Agency(ies)NHDES
Incident Time
Incident Duration26 days
Incident Report ProducedYes
Information SourcesNHDES
