Colt Estate Dam is an earth dam located in Putnam County, New York, built in 1908. It carries a Significant hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 127 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Colt Estate Dam
The primary purpose of Colt Estate Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cloudbank Lake LLC (private). It impounds the Tr-hudson River.
The dam stands 20 feet tall and stretches 127 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 25 acre-feet. Completed in 1908, the structure is over a century old.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 03/24/2025.
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Location
| State | New York |
| County | Putnam |
| Nearest City | None |
| River/Stream | Tr-hudson River |
| Coordinates | 41.34917, -73.94389 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 127 ft |
| Year Completed | 1908 (118 years old) |
Storage & Hydraulics
| NID Storage | 25 acre-ft |
| Max Storage | 25 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 2 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Cloudbank Lake LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 03/24/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY14181 |
| Federal ID | NY14181 |
| More Info | State Dam Safety Program |