Darby
Key Takeaway
Darby is classified as significant hazard in Arkansas. It was completed in 1956 and is 70 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 27 ft (taller than 51.6% in AR) |
| Dam Length | 900 ft |
| Dam Type | Earth |
| Max Storage | 1.1K acre-ft |
| Normal Storage | 516 acre-ft |
| Surface Area | 150 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 4,125 cfs |
| Year Completed | 1956 (70 years old) |
| Year Modified | 1961 |
| NID ID | AR00417 |
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
CITY OF CHARLESTON;Fort Chaffee
Federal Government
Nearby Dams
Old Water Supply Lake Dam
Franklin, AR
Significant Hazard 18 ftSixmile Creek Wid Site 12
Logan, AR
Significant Hazard 34 ftSixmile Creek Wid Site 11
Logan, AR
Significant HazardSixmile Creek Wid Site 24
Franklin, AR
Low Hazard 28 ftSixmile Creek Wid Site 10
Logan, AR
Significant Hazard 44 ftSixmile Creek Wid Site 13
Franklin, AR
Low Hazard 35 ftEngineer Lake
Sebastian, AR
Low Hazard 25 ftSixmile Creek Wid Site 23
Franklin, AR
Low HazardFrequently Asked Questions
What is the hazard classification of Darby?
Darby 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 Darby?
Darby is owned by CITY OF CHARLESTON;Fort Chaffee (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Darby built?
Darby was completed in 1956, making it 70 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 Darby?
Darby serves the following purposes: Water Supply, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Darby?
Darby has a dam height of 27 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 Darby last inspected?
Darby was last inspected on July 20, 1992. Inspection dates indicate when a formal review occurred, not the results of that inspection.