Willow Hill Reservoir
Key Takeaway
Willow Hill Reservoir is classified as high hazard in California. Its primary use is water supply. 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 | 24 ft (taller than 22.6% in CA) |
| Dam Length | 240 ft |
| Dam Type | Earth |
| Max Storage | 125 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| NID ID | CA00600 |
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
City of Folsom
Local Government
Nearby Dams
Mount Stoneman
Sacramento, CA
Low Hazard 43 ftFolsom
Sacramento, CA
High Hazard 275 ftNimbus
Sacramento, CA
High Hazard 87 ftHinkle
Placer, CA
High Hazard 20 ftEl Dorado Hills
El Dorado, CA
High Hazard 31 ftMiners Ravine Detention
Placer, CA
Low Hazard 23 ftNew Bass Lake
El Dorado, CA
High Hazard 26 ftBlodgett
Sacramento, CA
Significant Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Willow Hill Reservoir?
Willow Hill Reservoir 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 Willow Hill Reservoir?
Willow Hill Reservoir is owned by City of Folsom (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Willow Hill Reservoir?
Willow Hill Reservoir serves the following purposes: Water Supply, Tailings, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Willow Hill Reservoir?
Willow Hill Reservoir has a dam height of 24 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 Willow Hill Reservoir last inspected?
Willow Hill Reservoir was last inspected on July 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.