Mill Pond Dam
Mill Pond Dam is an earth dam located in Berkshire County, Massachusetts, built in 1917. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Mill Pond Dam
The primary purpose of Mill Pond 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 Ma Department Of Transportation (state). It impounds the Karner Brook near Egremont.
The dam stands 11 feet tall and stretches 200 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1917, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/14/2022.
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Location
| State | Massachusetts |
| County | Berkshire |
| Nearest City | Egremont |
| River/Stream | Karner Brook |
| Coordinates | 42.15876, -73.42175 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Length | 200 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 914 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | MA Department of Transportation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/14/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00712 |
| Federal ID | MA00712 |
| More Info | State Dam Safety Program |