Lake Cohasset Upper Dam

High HazardPoor ConditionEmergency Action Plan: Yes

Location

CountyOrange
Nearest CityArden
River/StreamARDEN BROOK
Coordinates41.27591, -74.11364

Physical Characteristics

Dam TypeConcrete
NID Height25 ft
Dam Height25 ft
Dam Length150 ft
Year Completed1924 (102 years old)

Storage & Hydraulics

NID Storage373 acre-ft
Max Storage373 acre-ft
Normal Storage373 acre-ft
Surface Area37 acres
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerNYSOPRHP - PALISADES INTERSTATE PARK COMMISSION
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection10/04/2023
Emergency Action PlanYes

Identifiers

NID IDNY00042
Federal IDNY00042
More InfoState Dam Safety Program

Nearby Dams

Lake Cohasset Lower Dam 0.4 mi High Cranberry Lake Dam 0.9 mi Low Forest Lake Dam 1.4 mi Low Echo Lake Dam 1.4 mi Low Lake Tiorati Dam 1.8 mi High Lake Askoti Dam 2.5 mi Low Lake Skannatati Dams A B & C 2.6 mi Low Nawahunta Dam 2.7 mi Low Summit Lake Dam 2.8 mi Low Lake Stahahe Dam 3.0 mi High