Crosby Pond Dam
Crosby Pond Dam is an earth dam located in Middlesex County, Massachusetts. It carries a Significant hazard potential classification and has a unsatisfactory condition assessment.
About Crosby Pond Dam
The primary purpose of Crosby Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Deceased - John H. Crosby (private). It impounds the Mill Brook near Concord.
The dam stands 9 feet tall and stretches 260 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 50 acre-feet, 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 06/02/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Massachusetts |
| County | Middlesex |
| Nearest City | Concord |
| River/Stream | Mill Brook |
| Coordinates | 42.45031, -71.32388 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Length | 260 ft |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Deceased - John H. Crosby |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 06/02/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA01535 |
| Federal ID | MA01535 |
| More Info | State Dam Safety Program |