Riley Lake Dam is an earth dam located in Ashley County, Arkansas, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 350 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 Riley Lake Dam
The primary purpose of Riley Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Billy Riley (private). It impounds the Little Bearhouse-tr near Thebes.
The dam stands 12 feet tall and stretches 350 feet across, and has a maximum storage capacity of 95 acre-feet. Completed in 1964, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Arkansas |
| County | Ashley |
| Nearest City | Thebes |
| River/Stream | Little Bearhouse-tr |
| Coordinates | 33.36167, -91.72000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Length | 350 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 95 acre-ft |
| Max Storage | 95 acre-ft |
| Normal Storage | 76 acre-ft |
| Max Discharge | 842 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Billy Riley |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00682 |
| Federal ID | AR00682 |
| More Info | State Dam Safety Program |