Long Hollow
Key Takeaway
Long Hollow is classified as high hazard in Colorado. It was completed in 2014 and is 12 years old. Its primary use is irrigation. 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 | 110 ft (taller than 96.6% in CO) |
| Dam Length | 792 ft |
| Dam Type | Earth |
| Max Storage | 8.6K acre-ft |
| Normal Storage | 5.3K acre-ft |
| Surface Area | 250 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 19,500 cfs |
| Year Completed | 2014 (12 years old) |
| NID ID | CO03021 |
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
LA PLATA WATER CONSERVANCY DISTRICT (HUNTINGTON, D
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Long Hollow?
Long Hollow 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 Long Hollow?
Long Hollow is owned by LA PLATA WATER CONSERVANCY DISTRICT (HUNTINGTON, D (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Hollow built?
Long Hollow was completed in 2014, making it 12 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 Long Hollow?
Long Hollow serves the following purposes: Irrigation, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Long Hollow?
Long Hollow has a dam height of 110 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 Long Hollow last inspected?
Long Hollow was last inspected on October 31, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.