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Red Oak - East Nishnabotna LB Location
City, County, and State of the levee system. Determined by the levee alignment location not the leveed area.
Red Oak, Montgomery County, Iowa
System ID
Unique identifier code for the levee system using 10 or 12 numbers in length.
4705000023
Operation and Maintenance Organization
Entity responsible for day-to-day management of the levee.
UNKNOWN NON-PROJECT SPONSORCity of Red Oak
Floodplain Management
Entities responsible for regulating activities that occur in areas prone to flooding.
FEMA Region 7
Oversight Organization
Entity responsible for oversight of the levee and ensuring it is maintained.
USACE - Omaha District
Last Assesment Date Last Risk Assessment or Formal Inspection.
4/29/2021
Data Last Updated Date any of this information for the system has been updated.
10/1/2024
Levee Length
Combine length of all the levee system features including the embankments, floodwalls, closures where they exist for this system.
2.285 Miles Average Levee Height
The average height of the levee system. The levee profile viewer on the mapping window will show the actual levee height values for the length of the levee if available.
13 Feet Year Levee Constructed Year levee system was fully completed as a flood reduction project.
1962 Summary
General text description of the levee system with a summary of why the levee is there, and the benefits it provides.
The project consists of a federally constructed levee embankment along the left bank of the Nishnabotna River west of the City of Red Oak, IA in Montgomery County, IA. The levee embankment begins a quarter-mile upstream of U.S. Hwy 34 and runs downstream to the Burlington Northern Railroad Bridge. The original segment of the levee is 2.2 miles long but it was extended an additional 700 feet upstream in 1983. The current levee has an average height of 16 feet, a crest width of 10 feet, and 3 Horizontal: 1 Vertical sideslopes on the river side and land side. The levee system has 10 gravity drainage structures to convey interior drainage. There are 5 closure structures located at the upstream tie off, US Highway 34, Oak St, Coolbaugh St, and at a railroad crossing. The original construction was completed in 1962 and turned over to the City of Red Oak for operations and maintenance.
Performance & Condition
General text description of the historical and anticipated performance of the levee, the people and property benefitting from the levee and who may be at risk of flooding, and actions to address areas of concern.
In Progress
Flooding Hazard
Historic Loading by Percentage of Height
Representative loading associated with historical flood information as a percentage of the levee height or overtopping.
Representative loading associated with historical flood information as a percentage of the levee height or overtopping.
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