Panama No. 1 - Northwest
Key Takeaway
Panama No. 1 - Northwest is classified as low hazard in Colorado. It was completed in 1904 and is 122 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 7 ft (taller than 0.4% in CO) |
| Dam Length | 1,900 ft |
| Dam Type | Rockfill |
| Max Storage | 7.0K acre-ft |
| Normal Storage | 4.7K acre-ft |
| Surface Area | 370 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 4,150 cfs |
| Year Completed | 1904 (122 years old) |
| NID ID | CO02823 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
BOULDER & WHITE ROCK DITCH & RESERVOIR CO. (GRANT,
Private
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Low Hazard 9 ftFrequently Asked Questions
What is the hazard classification of Panama No. 1 - Northwest?
Panama No. 1 - Northwest is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Panama No. 1 - Northwest?
Panama No. 1 - Northwest is owned by BOULDER & WHITE ROCK DITCH & RESERVOIR CO. (GRANT, (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Panama No. 1 - Northwest built?
Panama No. 1 - Northwest was completed in 1904, making it 122 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 Panama No. 1 - Northwest?
Panama No. 1 - Northwest serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Panama No. 1 - Northwest?
Panama No. 1 - Northwest has a dam height of 7 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 Panama No. 1 - Northwest last inspected?
Panama No. 1 - Northwest was last inspected on July 22, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.