4 Occurrences 13 Occurrences 23 Occurrences 27 Occurrences 
Augusta Bottom and Dutzow Bottom Levee System Location
City, County, and State of the levee system. Determined by the levee alignment location not the leveed area.
Augusta, St. Charles County, Missouri
System ID
Unique identifier code for the levee system using 10 or 12 numbers in length.
5605820001
Operation and Maintenance Organization
Entity responsible for day-to-day management of the levee.
Dutzow Bottom Levee DistrictAugusta Bottom Levee Association
Floodplain Management
Entities responsible for regulating activities that occur in areas prone to flooding.
FEMA Region 7
Last Assesment Date Last Risk Assessment or Formal Inspection.
12/19/2016
Data Last Updated Date any of this information for the system has been updated.
4/24/2025
Levee Length
Combine length of all the levee system features including the embankments, floodwalls, closures where they exist for this system.
17.132 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.
10 Feet Year Levee Constructed Year levee system was fully completed as a flood reduction project.
1999 Summary
General text description of the levee system with a summary of why the levee is there, and the benefits it provides.
The Augusta Bottom and Dutzow Bottom levee system reduces the risk of flooding from the Missouri River to properties in St. Charles and Warren Counties, Missouri near the communities of Augusta and Dutzow. The system was locally constructed and is owned and operated by the nonfederal sponsors: Augusta Bottom Levee Association and Dutzow Bottom Levee District. Constructed from the 1920s to the 1990s, the levee system consists of approximately 17.2 miles of earthen embankment that runs along Charrette Creek on the west, Missouri River on the south, and Sehrt and Bigelow Creeks on the north. Within the 7,300-acre leveed area are agricultural bottomlands, a small population with scattered farmsteads, the Washington Memorial regional airport, several oil/gas pipelines, and a portion of the Katy Trail bike path. No towns or villages are located within the leveed area. The Augusta Bottom and Dutzow Bottom levee system has prevented flooding during numerous flood events and provides benefits to more than 50 residents and employees and nearly $7 million in property value. The levee overtopped and breached in 1993 and 1995. As recently as the 2019 flood event, the levee failed from erosion.
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.
A risk assessment was completed on the Augusta Bottom and Dutzow Bottom levee system in 2015. The likelihood of the levee being overtopped is estimated to have a 20% chance of occurring each year. The levee is likely to breach when it is overtopped. Levee performance is uncertain during an extended flood event due to the aged and possibly deteriorated pipes passing through the system. Consequences of overtopping or failure was determined to be low due to the sparsely populated area and good opportunities to egress in the event of an emergency. A levee failure could result in flooding depths of 11 feet, loss of property and productive agricultural land, and a potential loss of life, if residents and employees are not evacuated. Depths would be greatest on the east side of the leveed area due to natural topography of the area.
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.
4 Occurrences 13 Occurrences 23 Occurrences 27 Occurrences