Roundup Sewage Lagoon
Key Takeaway
Roundup Sewage Lagoon is classified as low hazard in Montana. It was completed in 1957 and is 69 years old. Its primary use is other.
Physical Details
| Dam Height | 12 ft (taller than 9.2% in MT) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 330 acre-ft |
| Normal Storage | 312 acre-ft |
| Year Completed | 1957 (69 years old) |
| NID ID | MT01411 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF ROUNDUP
Local Government
Frequently Asked Questions
What is the hazard classification of Roundup Sewage Lagoon?
Roundup Sewage Lagoon is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Roundup Sewage Lagoon?
Roundup Sewage Lagoon is owned by CITY OF ROUNDUP (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Roundup Sewage Lagoon built?
Roundup Sewage Lagoon was completed in 1957, making it 69 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 Roundup Sewage Lagoon?
Roundup Sewage Lagoon serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Roundup Sewage Lagoon?
Roundup Sewage Lagoon has a dam height of 12 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.