Marlborough Water District Dam & Dike is an earth dam located in Ulster County, New York, built in 1964. It carries a Significant hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 280 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 Marlborough Water District Dam & Dike
The primary purpose of Marlborough Water District Dam & Dike is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Marlborough Water District (local government). It impounds the Tr-hudson River near Marlboro.
The dam stands 23 feet tall and stretches 280 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, the structure is well into its service life at over 50 years 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. The most recent inspection on record was 11/17/2021.
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Location
| State | New York |
| County | Ulster |
| Nearest City | Marlboro |
| River/Stream | Tr-hudson River |
| Coordinates | 41.61944, -74.00694 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 280 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 53 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 360 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Marlborough Water District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/17/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY01110 |
| Federal ID | NY01110 |
| More Info | State Dam Safety Program |