Upper Porter Pond Dam
Key Takeaway
Upper Porter Pond Dam is classified as significant hazard in Massachusetts. It was completed in 1940 and is 86 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 11 ft (taller than 25.5% in MA) |
| Dam Length | 340 ft |
| Dam Type | Earth |
| Max Storage | 79 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1940 (86 years old) |
| NID ID | MA00425 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF BROCKTON, OFFICE OF THE MAYOR
Local Government
Nearby Dams
Lower Porter Pond Dam
Plymouth, MA
Significant Hazard 9 ftWaldo Lake Dam
Plymouth, MA
High Hazard 18 ftThirty Acre Pond Dam
Plymouth, MA
High Hazard 13 ftEllis Brett Pond Dam
Plymouth, MA
High Hazard 11 ftCross Pond Dam
Plymouth, MA
Significant Hazard 7 ftBrockton Reservoir Dam
Norfolk, MA
Significant Hazard 17 ftFrench Pond Dam
Bristol, MA
Significant Hazard 12 ftLake Holbrook Dam
Norfolk, MA
Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Upper Porter Pond Dam?
Upper Porter Pond Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Upper Porter Pond Dam?
Upper Porter Pond Dam is owned by CITY OF BROCKTON, OFFICE OF THE MAYOR (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Porter Pond Dam built?
Upper Porter Pond Dam was completed in 1940, making it 86 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Upper Porter Pond Dam?
Upper Porter Pond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Porter Pond Dam?
Upper Porter Pond Dam has a dam height of 11 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Upper Porter Pond Dam last inspected?
Upper Porter Pond Dam was last inspected on February 8, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.