Sidney Sewage Lagoon
Key Takeaway
Sidney Sewage Lagoon is classified as low hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is other.
Physical Details
| Dam Height | 9 ft (taller than 2.9% in MT) |
| Dam Length | 4,000 ft |
| Dam Type | Earth |
| Max Storage | 340 acre-ft |
| Normal Storage | 320 acre-ft |
| Year Completed | 1960 (66 years old) |
| NID ID | MT01413 |
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 SIDNEY
Local Government
Nearby Dams
Holly Sugar, Lower
Richland, MT
Low Hazard 10 ftSturgis
Richland, MT
Low Hazard 21 ftMcglynn Reservoir
Richland, MT
Significant Hazard 26 ftChristensen (Richland)
Richland, MT
Low Hazard 26 ftSteinreisser #10
Richland, MT
Significant Hazard 20 ftVaux #1
Richland, MT
Low Hazard 34 ftVaux #2
Richland, MT
Low Hazard 15 ftSportman Dam
Richland, MT
Low Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Sidney Sewage Lagoon?
Sidney 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 Sidney Sewage Lagoon?
Sidney Sewage Lagoon is owned by CITY OF SIDNEY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sidney Sewage Lagoon built?
Sidney Sewage Lagoon was completed in 1960, making it 66 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 Sidney Sewage Lagoon?
Sidney 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 Sidney Sewage Lagoon?
Sidney Sewage Lagoon has a dam height of 9 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.