Comerio II Dam
Key Takeaway
Comerio II Dam is classified as high hazard in Puerto Rico. It was completed in 1913 and is 113 years old. Its primary use is hydroelectric. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 128 ft (taller than 69.4% in PR) |
| Dam Length | 480 ft |
| Dam Type | Buttress |
| Max Storage | 1.8K acre-ft |
| Normal Storage | 600 acre-ft |
| Surface Area | 60 acres |
| Drainage Area | 135 sq mi |
| Max Discharge | 93,000 cfs |
| Year Completed | 1913 (113 years old) |
| NID ID | PR00018 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
MUNICIPALITY OF COMERIO
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Comerio II Dam?
Comerio II Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Comerio II Dam?
Comerio II Dam is owned by MUNICIPALITY OF COMERIO (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Comerio II Dam built?
Comerio II Dam was completed in 1913, making it 113 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 Comerio II Dam?
Comerio II Dam serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Comerio II Dam?
Comerio II Dam has a dam height of 128 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 Comerio II Dam last inspected?
Comerio II Dam was last inspected on September 17, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.