Lake Dark Hollow Dam

Significant HazardFair ConditionEmergency Action Plan: Yes

Location

CountyWestchester
Nearest CityThornwood
River/StreamTR-PLEASANTVILLE COVE
Coordinates41.14222, -73.74611

Physical Characteristics

Dam TypeEarth
NID Height28 ft
Dam Height28 ft
Dam Length600 ft
Year Completed1913 (113 years old)

Storage & Hydraulics

NID Storage116 acre-ft
Max Storage116 acre-ft
Normal Storage61 acre-ft
Surface Area9 acres
Drainage Area0 sq mi
Max Discharge335 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerDARK HOLLOW LAKE ASSOCIATION, INC.
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection02/04/2025
Emergency Action PlanYes

Identifiers

NID IDNY00048
Federal IDNY00048
More InfoState Dam Safety Program

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