East Lake #2
Key Takeaway
East Lake #2 is classified as significant hazard in Colorado. It was completed in 1889 and is 137 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 12 ft (taller than 11% in CO) |
| Dam Length | 1,400 ft |
| Dam Type | Earth |
| Max Storage | 176 acre-ft |
| Normal Storage | 94 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 45 cfs |
| Year Completed | 1889 (137 years old) |
| Year Modified | 2003 |
| NID ID | CO02110 |
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
CITY OF THORNTON
Local Government
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Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of East Lake #2?
East Lake #2 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 East Lake #2?
East Lake #2 is owned by CITY OF THORNTON (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was East Lake #2 built?
East Lake #2 was completed in 1889, making it 137 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 East Lake #2?
East Lake #2 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is East Lake #2?
East Lake #2 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.
When was East Lake #2 last inspected?
East Lake #2 was last inspected on November 2, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.