Flat Rock

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateNew York
CountySt. Lawrence
Nearest CityFine
River/StreamEast Branch Oswegatchie River
Coordinates44.22150, -75.07380

Physical Characteristics

Dam TypeConcrete
NID Height72 ft
Dam Height67 ft
Dam Length568 ft
Year Completed1925 (101 years old)

Storage & Hydraulics

NID Storage3,382 acre-ft
Max Storage3,382 acre-ft
Normal Storage3,382 acre-ft
Surface Area228 acres
Drainage Area262 sq mi
Max Discharge12,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerErie Boulevard Hydropower, L.P.
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection06/15/2022
Emergency Action PlanYes

Identifiers

NID IDNY00413
Federal IDNY00413
More InfoState Dam Safety Program

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