Echols Lake Dam is an earth dam located in Sebastian County, Arkansas, built in 1946. It carries a High hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 420 ft long, taller than 55% 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 Echols Lake Dam
The primary purpose of Echols Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mont S. Echols, Jr. (private). It impounds the Arkansas River-tr near Fort Smith.
The dam stands 26 feet tall and stretches 420 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 85 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1946, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 03/19/2026.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Arkansas dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Arkansas |
| County | Sebastian |
| Nearest City | Fort Smith |
| River/Stream | Arkansas River-tr |
| Coordinates | 35.35965, -94.38677 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 420 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Normal Storage | 56 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 440 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mont S. Echols, Jr. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 03/19/2026 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR01208 |
| Federal ID | AR01208 |
| More Info | State Dam Safety Program |