Cornish Plains Reservoir
Key Takeaway
Cornish Plains Reservoir is classified as significant hazard in Colorado. It was completed in 2007 and is 19 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 40.7% in CO) |
| Dam Length | 2,880 ft |
| Dam Type | Earth |
| Max Storage | 4.9K acre-ft |
| Normal Storage | 2.7K acre-ft |
| Surface Area | 308 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,293 cfs |
| Year Completed | 2007 (19 years old) |
| NID ID | CO02925 |
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
NEW CACHE LA POUDRE IRRIGATING COMPANY (TROWBRIDGE
Private
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Cornish Plains Reservoir?
Cornish Plains Reservoir 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 Cornish Plains Reservoir?
Cornish Plains Reservoir is owned by NEW CACHE LA POUDRE IRRIGATING COMPANY (TROWBRIDGE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cornish Plains Reservoir built?
Cornish Plains Reservoir was completed in 2007, making it 19 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 Cornish Plains Reservoir?
Cornish Plains Reservoir serves the following purposes: Irrigation, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Cornish Plains Reservoir?
Cornish Plains Reservoir has a dam height of 21 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 Cornish Plains Reservoir last inspected?
Cornish Plains Reservoir was last inspected on October 3, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.