Lock and Dam No 8
Key Takeaway
Lock and Dam No 8 is classified as low hazard in Arkansas. It was completed in 1911 and is 115 years old. Its primary use is navigation.
Physical Details
| Dam Height | 25 ft (taller than 44.1% in AR) |
| Dam Length | 334 ft |
| Dam Type | Gravity |
| Max Storage | 85.0K acre-ft |
| Normal Storage | 59.2K acre-ft |
| Max Discharge | 6,500 cfs |
| Year Completed | 1911 (115 years old) |
| NID ID | AR00156 |
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
DAEN LMK
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lock and Dam No 8?
Lock and Dam No 8 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 Lock and Dam No 8?
Lock and Dam No 8 is owned by DAEN LMK (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lock and Dam No 8 built?
Lock and Dam No 8 was completed in 1911, making it 115 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 Lock and Dam No 8?
Lock and Dam No 8 serves the following purposes: Navigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lock and Dam No 8?
Lock and Dam No 8 has a dam height of 25 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 Lock and Dam No 8 last inspected?
Lock and Dam No 8 was last inspected on January 1, 1990. Inspection dates indicate when a formal review occurred, not the results of that inspection.