Darby is an earth dam located in Franklin County, Arkansas, built in 1956. It carries a Significant hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 900 ft long, taller than 59% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Darby
The primary purpose of Darby is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City of Charleston;fort Chaffee (federal). It impounds the Tr Prairie Creek near Charleston.
The dam stands 27 feet tall and stretches 900 feet across, creates a reservoir covering 150 acres, has a maximum storage capacity of 1,123 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1956, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 07/20/1992. That was over 34 years ago.
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Location
| State | Arkansas |
| County | Franklin |
| Nearest City | Charleston |
| River/Stream | Tr Prairie Creek |
| Coordinates | 35.26833, -94.02833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 900 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 1,123 acre-ft |
| Max Storage | 1,123 acre-ft |
| Normal Storage | 516 acre-ft |
| Surface Area | 150 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 4,125 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Charleston;fort Chaffee |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/20/1992 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR00417 |
| Federal ID | AR00417 |
| More Info | State Dam Safety Program |