Mill Pond Dam is an earth dam located in Columbia County, New York, built in 1890. It carries a Significant hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 40 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 Mill Pond Dam
The primary purpose of Mill Pond Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Daniel Slott (private). It impounds the Punch Brook near Ancramdale.
The dam stands 10 feet tall and stretches 40 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 6 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1890, 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 07/12/2023.
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Location
| State | New York |
| County | Columbia |
| Nearest City | Ancramdale |
| River/Stream | Punch Brook |
| Coordinates | 42.03139, -73.57861 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 40 ft |
| Year Completed | 1890 (136 years old) |
Storage & Hydraulics
| NID Storage | 6 acre-ft |
| Max Storage | 6 acre-ft |
| Normal Storage | 5 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,788 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Daniel Slott |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/12/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY13818 |
| Federal ID | NY13818 |
| More Info | State Dam Safety Program |