Transvaal Company Lake Dam is an earth dam located in Pulaski County, Arkansas, built in 1946. It carries a Significant hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 520 ft long. 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 Transvaal Company Lake Dam
The primary purpose of Transvaal Company Lake Dam 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 Transvaal Inc. (private). It impounds the Rocky Branch near Jacksonville.
The dam stands 16 feet tall and stretches 520 feet across, and has a maximum storage capacity of 54 acre-feet. Completed in 1946, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | Arkansas |
| County | Pulaski |
| Nearest City | Jacksonville |
| River/Stream | Rocky Branch |
| Coordinates | 34.87778, -92.13333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Length | 520 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Normal Storage | 36 acre-ft |
| Max Discharge | 449 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Transvaal Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00078 |
| Federal ID | AR00078 |
| More Info | State Dam Safety Program |