Little Thompson
Key Takeaway
Little Thompson is classified as significant hazard in Colorado. It was completed in 1896 and is 130 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 29 ft (taller than 64% in CO) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 767 acre-ft |
| Normal Storage | 158 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 618 cfs |
| Year Completed | 1896 (130 years old) |
| NID ID | CO01191 |
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
THE EXTENSION IRRIGATION COMPANY (CHRIS THOMPSON)
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Little Thompson?
Little Thompson 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 Little Thompson?
Little Thompson is owned by THE EXTENSION IRRIGATION COMPANY (CHRIS THOMPSON) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little Thompson built?
Little Thompson was completed in 1896, making it 130 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 Little Thompson?
Little Thompson serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Little Thompson?
Little Thompson has a dam height of 29 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 Little Thompson last inspected?
Little Thompson was last inspected on December 7, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.