Stafford Reservoir #3 Dam
Stafford Reservoir #3 Dam is an earth dam located in Tolland County, Connecticut, built in 1930. It carries a Significant hazard potential classification and has a poor condition assessment.
About Stafford Reservoir #3 Dam
The primary purpose of Stafford Reservoir #3 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 Connecticut Water Company (public utility). It impounds the Roaring Brook near Union.
The dam stands 11 feet tall and stretches 230 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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. The most recent inspection on record was 11/19/2024.
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Location
| State | Connecticut |
| County | Tolland |
| Nearest City | Union |
| River/Stream | Roaring Brook |
| Coordinates | 41.98209, -72.22143 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 230 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Connecticut Water Company |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/19/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00589 |
| Federal ID | CT00589 |
| More Info | State Dam Safety Program |