Lewis Dam #1 Pd
Key Takeaway
Lewis Dam #1 Pd is classified as low hazard in Montana.
Physical Details
| Dam Length | 2,900 ft |
| Dam Type | Gravity |
| Max Storage | 681 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 134 acres |
| Drainage Area | 3 sq mi |
| NID ID | MT02176 |
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
DOI BLM
Federal Government
Nearby Dams
Harris #1
Petroleum, MT
Low Hazard 14 ftJelly Bean
Fergus, MT
Low Hazard 16 ftDewry
Fergus, MT
Low Hazard 15 ftDuck Creek Retention Dam
Petroleum, MT
High HazardBaby Food
Fergus, MT
Low Hazard 15 ftArther Dengel #1
Fergus, MT
Significant Hazard 24 ftDelaney #2
Petroleum, MT
Low Hazard 20 ftGraber #2
Fergus, MT
Low Hazard 39 ftFrequently Asked Questions
What is the hazard classification of Lewis Dam #1 Pd?
Lewis Dam #1 Pd 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 Lewis Dam #1 Pd?
Lewis Dam #1 Pd is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lewis Dam #1 Pd last inspected?
Lewis Dam #1 Pd was last inspected on November 6, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.