SILICA POND DAM - NH01098-3445
Dam Name: SILICA POND DAM
State: NH
Downstream Hazard Potential: S
Incident Type: Non-Failure
Incident Date: 07/18/2021
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: High Reservoir Level
Incident Mechanism 2Overtopping
Incident Mechanism 3Insufficient Spillway Capacity
Incident IDNH01098-3445
Incident DescriptionOvertopping along the right-side portion of the dam.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)0
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded1
Other Infrastructure ImpactsNone
Economic Damages (in $)Unknown
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesThe dam owner is presently evaluating reconstruction or removal options.
Owner TypeL
Dam TypeRE
Primary Purpose(s)R
EAPNR
Dam Height9 ft
Max Storage (ac-ft)29.00
Surface Area (acres)3.00
Year Completed1935
NID NumberNH01098
River NameUnnamed
Latitude42.8227
Longitude-72.1869
Year Modified
Regulatory Agency(ies)NHDES
Incident Time
Incident Duration1 day
Incident Report Produced
Information SourcesNHDES
