Thompson Lake Dam
Thompson Lake Dam is an earth dam located in Lonoke County, Arkansas, built in 1953. It carries a Significant hazard potential classification.
About Thompson Lake Dam
The primary purpose of Thompson Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by John Thompson (private). It impounds the Jacksnipe Branch near Ward.
The dam stands 17 feet tall and stretches 400 feet across, and has a maximum storage capacity of 80 acre-feet. Completed in 1953, 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.
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Location
| State | Arkansas |
| County | Lonoke |
| Nearest City | Ward |
| River/Stream | Jacksnipe Branch |
| Coordinates | 35.04333, -92.03722 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 400 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 70 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | John Thompson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00057 |
| Federal ID | AR00057 |
| More Info | State Dam Safety Program |