Mill Brook Site 2 Dam
Mill Brook Site 2 Dam is an earth dam located in Chenango County, New York, built in 1986. It carries a High hazard potential classification and has a poor condition assessment.
About Mill Brook Site 2 Dam
The primary purpose of Mill Brook Site 2 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Town Of New Berlin (local government). It impounds the Tr-unadilla River near New Berlin.
The dam stands 87 feet tall and stretches 730 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 1,065 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1986, the structure is 40 years 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 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 09/30/2024.
At 87 feet, this dam is taller than 97% 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 | Chenango |
| Nearest City | New Berlin |
| River/Stream | Tr-unadilla River |
| Coordinates | 42.62458, -75.36225 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 87 ft |
| Dam Height | 87 ft |
| Dam Length | 730 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 1,065 acre-ft |
| Max Storage | 1,065 acre-ft |
| Normal Storage | 794 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 5,617 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | TOWN OF NEW BERLIN |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 09/30/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01559 |
| Federal ID | NY01559 |
| More Info | State Dam Safety Program |