Holmes Mill Dam
Holmes Mill Dam is a masonry dam located in Dutchess County, New York. It carries a Significant hazard potential classification and has a poor condition assessment.
About Holmes Mill Dam
The primary purpose of Holmes Mill Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Town Of Pawling (local government). It impounds the Tr-middle Br Croton River near Holmes.
The dam stands 9 feet tall and stretches 87 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 6 acre-feet.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 11/07/2024.
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Location
| State | New York |
| County | Dutchess |
| Nearest City | Holmes |
| River/Stream | Tr-middle Br Croton River |
| Coordinates | 41.52333, -73.64778 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 87 ft |
Storage & Hydraulics
| NID Storage | 6 acre-ft |
| Max Storage | 6 acre-ft |
| Normal Storage | 5 acre-ft |
| Surface Area | 2 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | TOWN OF PAWLING |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/07/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY13886 |
| Federal ID | NY13886 |
| More Info | State Dam Safety Program |