Mississippi River Lock And Dam 19
Mississippi River Lock And Dam 19 is a concrete dam located in Lee County, Illinois, built in 1913. It carries a Significant hazard potential classification.
About Mississippi River Lock And Dam 19
The primary purpose of Mississippi River Lock And Dam 19 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 - Rock Island District (federal). It impounds the Mississippi River near Keokuk.
The dam stands 63 feet tall and stretches 7,460 feet across, creates a reservoir covering 30,845 acres, has a maximum storage capacity of 292,000 acre-feet, and collects water from a drainage area of 119,000 square miles. Completed in 1913, the structure is over a century 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 04/03/2023.
At 63 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Illinois |
| County | Lee |
| Nearest City | Keokuk |
| River/Stream | Mississippi River |
| Coordinates | 40.39500, -91.37470 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 63 ft |
| Dam Length | 7,460 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 292,000 acre-ft |
| Max Storage | 292,000 acre-ft |
| Surface Area | 30,845 acres |
| Drainage Area | 119,000 sq mi |
| Max Discharge | 428,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner | USACE - Rock Island District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 04/03/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL01238 |
| Federal ID | IL01238 |
| More Info | State Dam Safety Program |