Subiaco Dam (lower) is an earth dam located in Logan County, Arkansas, built in 1948. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 35 ft35 ft tall and 375 ft long, taller than 80% 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 Subiaco Dam (lower)
The primary purpose of Subiaco Dam (lower) 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 Subiaco Abbey (private). It impounds the East Fork Hegwood Creek near Subiaco.
The dam stands 35 feet tall and stretches 375 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 305 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1948, 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. 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 11/25/2024.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Arkansas |
| County | Logan |
| Nearest City | Subiaco |
| River/Stream | East Fork Hegwood Creek |
| Coordinates | 35.28333, -93.63806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 375 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 305 acre-ft |
| Max Storage | 305 acre-ft |
| Normal Storage | 240 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 380 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Subiaco Abbey |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/25/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR00877 |
| Federal ID | AR00877 |
| More Info | State Dam Safety Program |