Ashley Pond Dam
Ashley Pond Dam is an earth dam located in Hampden County, Massachusetts, built in 1897. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Ashley Pond Dam
The primary purpose of Ashley 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 City Of Holyoke (local government). It impounds the Tributary Of Paucatuck Brook near Holyoke.
The dam stands 11 feet tall and stretches 640 feet across, creates a reservoir covering 265 acres, has a maximum storage capacity of 3,000 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1897, 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 10/19/2023.
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Location
| State | Massachusetts |
| County | Hampden |
| Nearest City | Holyoke |
| River/Stream | Tributary Of Paucatuck Brook |
| Coordinates | 42.16706, -72.66947 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Length | 640 ft |
| Year Completed | 1897 (129 years old) |
Storage & Hydraulics
| NID Storage | 3,000 acre-ft |
| Max Storage | 3,000 acre-ft |
| Normal Storage | 2,448 acre-ft |
| Surface Area | 265 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 118 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Holyoke |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/19/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00542 |
| Federal ID | MA00542 |
| More Info | State Dam Safety Program |