Norrell Lock and Dam is a concrete dam located in Arkansas County, Arkansas, built in 1967. It carries a Significant hazard potential classification.
Dam profile
NID height · 7 ft7 ft tall and 490 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Norrell Lock and Dam
The primary purpose of Norrell Lock and Dam is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. The dam is owned by USACE - Little Rock District (federal). It impounds the Arkansas River near Arkansas City.
The dam stands 7 feet tall and stretches 490 feet across, and has a maximum storage capacity of 1,510 acre-feet. Completed in 1967, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 11/04/2020.
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Location
| State | Arkansas |
| County | Arkansas |
| Nearest City | Arkansas City |
| River/Stream | Arkansas River |
| Coordinates | 34.01930, -91.19436 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 7 ft |
| Dam Height | 2 ft |
| Dam Length | 490 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 1,510 acre-ft |
| Max Storage | 1,510 acre-ft |
| Max Discharge | 371,200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Little Rock District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/04/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AR00161 |
| Federal ID | AR00161 |
| More Info | State Dam Safety Program |