Case Brothers Upper Pond Dam is an earth dam located in Hartford County, Connecticut, built in 1870. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 300 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Case Brothers Upper Pond Dam
The primary purpose of Case Brothers Upper Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Manchester Land Conservation Trust, Inc. (local government). It impounds the Birch Mountain Brook near Manchester.
The dam stands 16 feet tall and stretches 300 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1870, the structure is one of the older dams in the region, with over a century and a half 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 07/03/2024.
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Location
| State | Connecticut |
| County | Hartford |
| Nearest City | Manchester |
| River/Stream | Birch Mountain Brook |
| Coordinates | 41.76300, -72.48818 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 300 ft |
| Year Completed | 1870 (156 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 812 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Manchester Land Conservation Trust, Inc. |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 07/03/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT00560 |
| Federal ID | CT00560 |
| More Info | State Dam Safety Program |