Globe Hollow Reservoir Dam
Globe Hollow Reservoir Dam is an earth dam located in Hartford County, Connecticut, built in 1906. It carries a Significant hazard potential classification and has a fair condition assessment.
About Globe Hollow Reservoir Dam
The primary purpose of Globe Hollow 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 Town Of Manchester (local government). It impounds the Hop Brook near Manchester.
The dam stands 40 feet tall and stretches 700 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 842 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1906, the structure is over a century 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/18/2019.
At 40 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Connecticut |
| County | Hartford |
| Nearest City | Manchester |
| River/Stream | Hop Brook |
| Coordinates | 41.75636, -72.51506 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 700 ft |
| Year Completed | 1906 (120 years old) |
Storage & Hydraulics
| NID Storage | 842 acre-ft |
| Max Storage | 842 acre-ft |
| Normal Storage | 545 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,120 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Town of Manchester |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 10/18/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00012 |
| Federal ID | CT00012 |
| More Info | State Dam Safety Program |