Sienna Lake Dam
Sienna Lake Dam is an earth dam located in Pulaski County, Arkansas, built in 1966. It carries a Low hazard potential classification and has a fair condition assessment.
About Sienna Lake Dam
The primary purpose of Sienna Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Sienna Lake Property Owners Association (private). It impounds the Mc Henry Creek-os near Little Rock.
The dam stands 29 feet tall and stretches 234 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 255 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 09/20/2021.
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Location
| State | Arkansas |
| County | Pulaski |
| Nearest City | Little Rock |
| River/Stream | Mc Henry Creek-os |
| Coordinates | 34.69500, -92.41833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 25 ft |
| Dam Length | 234 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 255 acre-ft |
| Max Storage | 255 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,588 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Sienna Lake Property Owners Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/20/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AR00128 |
| Federal ID | AR00128 |
| More Info | State Dam Safety Program |