Doubletree Subdivision Dam
Doubletree Subdivision Dam is an earth dam located in Onondaga County, New York, built in 1991. It carries a Significant hazard potential classification and has a poor condition assessment.
About Doubletree Subdivision Dam
The primary purpose of Doubletree Subdivision 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 Dewitt (local government). It impounds the None near Jamesville.
The dam stands 28 feet tall and stretches 450 feet across, has a maximum storage capacity of 4 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1991, the structure is 35 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. 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 11/22/2023.
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Location
| State | New York |
| County | Onondaga |
| Nearest City | Jamesville |
| River/Stream | None |
| Coordinates | 42.99333, -76.09722 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 450 ft |
| Year Completed | 1991 (35 years old) |
Storage & Hydraulics
| NID Storage | 4 acre-ft |
| Max Storage | 4 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 215 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | TOWN OF DEWITT |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/22/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY14148 |
| Federal ID | NY14148 |
| More Info | State Dam Safety Program |