Hillview Reservoir Dam
Hillview Reservoir Dam is an earth dam located in Westchester County, New York, built in 1915. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Hillview Reservoir Dam
The primary purpose of Hillview Reservoir Dam 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 New York City Dept Of Environmental Protection;nycdep Dams East Of The Hudson River (local government). It impounds the None near Yonkers.
The dam stands 90 feet tall and stretches 900 feet across, creates a reservoir covering 87 acres, and has a maximum storage capacity of 2,800 acre-feet. Completed in 1915, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/26/2024.
At 90 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New York dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New York |
| County | Westchester |
| Nearest City | Yonkers |
| River/Stream | None |
| Coordinates | 40.90891, -73.86653 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 90 ft |
| Dam Height | 90 ft |
| Dam Length | 900 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 2,800 acre-ft |
| Max Storage | 2,800 acre-ft |
| Normal Storage | 2,800 acre-ft |
| Surface Area | 87 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | NEW YORK CITY DEPT OF ENVIRONMENTAL PROTECTION;NYCDEP DAMS EAST OF THE HUDSON RIVER |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/26/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00187 |
| Federal ID | NY00187 |
| More Info | State Dam Safety Program |