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.
Dam profile
NID height · 20 ft20 ft tall and 400 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
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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Location
| State | New York |
| County | Greene |
| Nearest City | Jewett |
| River/Stream | East Kill |
| Coordinates | 42.23806, -74.12167 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 400 ft |
| Year Completed | 2007 (19 years old) |
Storage & Hydraulics
| NID Storage | 335 acre-ft |
| Max Storage | 335 acre-ft |
| Normal Storage | 113 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 4,250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Nys Dec Division of Lands & Forests |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/20/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00879 |
| Federal ID | NY00879 |
| More Info | State Dam Safety Program |