Missouri River flow frequency update

MISSOURI RIVER FLOW FREQUENCY UPDATE 19 July 2023 U.S. Army Corps of Engineers Omaha & Kansas City Districts Kellie Bergman, Omaha District Chance Bitner, Kansas City District Ginger Niemann-Harper, Kansas City District Rick Nusz, FEMA Region 7 Visit our Website!2 WELCOME & INTRODUCTIONS  Eric Shumate, Chief of Engineering, Kansas City District  Four State Partners  Rick Nusz, FEMA R73 AGENDA  Background  Why Update Flow and Stage Frequency  What are Flow and Stage Frequency  Next Steps  Flow Frequency Results Summary  Question and Answer Missouri River between Omaha and Council Bluffs -20194 BACKGROUND Significant flood damages in 2019, only eight years after the damaging 2011 flood, led to calls from the Lower Missouri River Basin states to better prepare for future floods. As a result, the Missouri River Flood Risk and Resiliency Study was initiated. While completed under separate funding from the Floodplain Management Services Program (FPMS), this Flow Frequency Study report provides foundational information, that when combinedwith future study of stage frequency, will help accurately describe the current flood risk that exists on the Missouri River. The intended use of this data is for current studies and ongoing flood risk management activities. 5 MISSOURI RIVER FLOOD THREATS CONTINUE  Flood risk management efforts implemented  Continued efforts needed Near Hamburg IA 2019 Hamburg IA 2019 Council Bluffs 19526 PURSUING A SAFER MISSOURI RIVER  What types of management decisions can be made to support a safer Missouri River?  Levee Modifications  Levee Setbacks  Nonstructural solutions such as buyoutsand structure elevations  Improved conveyance at pinch points  Flood Insurance  Land use regulations and zoning  Building standards  Critical infrastructure management  Emergency preparedness  Risk communication  H Home Elevated on Fill near Craig, Missouri Garage Elevated on Fill Levee Setback Construction on the L-536 levee system7 PURSUING A