Lower Howell
Key Takeaway
Lower Howell is classified as significant hazard in California. It was completed in 1877 and is 149 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 39 ft (taller than 44.4% in CA) |
| Dam Length | 475 ft |
| Dam Type | Earth |
| Max Storage | 153 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1877 (149 years old) |
| NID ID | CA00677 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
San Jose Water Company
Public Utility
Nearby Dams
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High Hazard 132 ftFrequently Asked Questions
What is the hazard classification of Lower Howell?
Lower Howell is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Lower Howell?
Lower Howell is owned by San Jose Water Company (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Howell built?
Lower Howell was completed in 1877, making it 149 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 Lower Howell?
Lower Howell serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lower Howell?
Lower Howell has a dam height of 39 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 Lower Howell last inspected?
Lower Howell was last inspected on July 21, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.