Ralston #1
Key Takeaway
Ralston #1 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 | 20 ft (taller than 36.1% in CO) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 70 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 64 cfs |
| Year Completed | 1904 (122 years old) |
| Year Modified | 1945 |
| NID ID | CO01922 |
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
RANCH AT COULTER CREEK HOA (LEVIN, ROBBIE)
Private
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Significant Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Ralston #1?
Ralston #1 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 Ralston #1?
Ralston #1 is owned by RANCH AT COULTER CREEK HOA (LEVIN, ROBBIE) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ralston #1 built?
Ralston #1 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 Ralston #1?
Ralston #1 serves the following purposes: Irrigation, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Ralston #1?
Ralston #1 has a dam height of 20 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 Ralston #1 last inspected?
Ralston #1 was last inspected on June 9, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.