Markham Pond Dam is an earth dam located in Middlesex County, Connecticut. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 400 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 Markham Pond Dam
The primary purpose of Markham Pond Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Belltown Sportsman's Club Inc. (private). It impounds the Flat Brook Trib.
The dam stands 14 feet tall and stretches 400 feet across, creates a reservoir covering 0 acres, and collects water from a drainage area of 0 square miles.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 12/16/2023.
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Location
| State | Connecticut |
| County | Middlesex |
| River/Stream | Flat Brook Trib |
| Coordinates | 41.55854, -72.46145 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 400 ft |
Storage & Hydraulics
| Surface Area | 0 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Belltown Sportsman's Club Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/16/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT01780 |
| Federal ID | CT01780 |
| More Info | State Dam Safety Program |