Colgate Lake Dam

Colgate Lake Dam is a concrete dam located in Greene County, New York, built in 2007. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About Colgate Lake Dam

The primary purpose of Colgate Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nys Dec Division Of Lands & Forests (state). It impounds the East Kill near Jewett.

The dam stands 20 feet tall and stretches 400 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 335 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 2007, the structure is relatively new.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 05/20/2024.

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Significant HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateNew York
CountyGreene
Nearest CityJewett
River/StreamEast Kill
Coordinates42.23806, -74.12167

Physical Characteristics

Dam TypeConcrete
NID Height20 ft
Dam Height20 ft
Dam Length400 ft
Year Completed2007 (19 years old)

Storage & Hydraulics

NID Storage335 acre-ft
Max Storage335 acre-ft
Normal Storage113 acre-ft
Surface Area24 acres
Drainage Area5 sq mi
Max Discharge4,250 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerNYS DEC DIVISION OF LANDS & FORESTS
Owner TypeState
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection05/20/2024
Emergency Action PlanYes

Identifiers

NID IDNY00879
Federal IDNY00879
More InfoState Dam Safety Program

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