Muddy Fork Site 2 is an earth dam located in Washington County, Arkansas, built in 1963. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 80 ft80 ft tall and 1,768 ft long, taller than 97% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Muddy Fork Site 2
The primary purpose of Muddy Fork Site 2 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 Lincoln (local government). It impounds the Moore Creek near Rhea.
The dam stands 80 feet tall and stretches 1,768 feet across, creates a reservoir covering 89 acres, has a maximum storage capacity of 7,002 acre-feet, and collects water from a drainage area of 13 square miles. Completed in 1963, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 02/02/2025.
At 80 feet, this dam is taller than 97% of all dams in the United States.
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Location
| State | Arkansas |
| County | Washington |
| Nearest City | Rhea |
| River/Stream | Moore Creek |
| Coordinates | 36.00361, -94.41889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 80 ft |
| Dam Height | 80 ft |
| Dam Length | 1,768 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 7,002 acre-ft |
| Max Storage | 7,002 acre-ft |
| Normal Storage | 1,668 acre-ft |
| Surface Area | 89 acres |
| Drainage Area | 13 sq mi |
| Max Discharge | 15,387 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Lincoln |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/02/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00283 |
| Federal ID | AR00283 |
| More Info | State Dam Safety Program |