Cobalt Lake Dam
Cobalt Lake Dam is an earth dam located in Dutchess County, New York, built in 1953. It carries a Low hazard potential classification.
About Cobalt Lake Dam
Cobalt Lake Dam is a dam in Dutchess, New York. The dam is owned by Lone Star Industries Inc (private). It impounds the Casper Creek.
The dam stands 36 feet tall and stretches 1,031 feet across, creates a reservoir covering 38 acres, has a maximum storage capacity of 256 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1953, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 03/06/2025.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | New York |
| County | Dutchess |
| Nearest City | None |
| River/Stream | Casper Creek |
| Coordinates | 41.61833, -73.94167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 1,031 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 256 acre-ft |
| Max Storage | 256 acre-ft |
| Normal Storage | 256 acre-ft |
| Surface Area | 38 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 560 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | LONE STAR INDUSTRIES INC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 03/06/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01234 |
| Federal ID | NY01234 |
| More Info | State Dam Safety Program |