Innovative flood inundation mapping is being done in creative ways for the Kansas Hazard Mitigation Team. Technology is making this easier each year. The tools in remote sensing and the software tools, like hydrologic and hydraulic modeling and GIS tools, are combining to offer the public helpful tools in discovering where flood risks are.
Flood Forecast Inundation Maps
This way of inundation mapping combines inundation map books with forecasting and flood warning, and they are offered as a way besides flood insurance rate maps to convey flood risk areas.
Below are web links to flood forecast inundation maps that the Kansas Hazard Mitigation Team requested the Silver Jackets federal partners to setup for communities in Kansas.
- Leavenworth, KS, Missouri River. This location shows leveed areas in yellow until overtopping.
- Parkville, MO, Missouri River. This location shows leveed areas in yellow until overtopping.
- Manhattan, KS, Wildcat Creek
- Manhattan, KS, Big Blue River
- Rossville, KS, Cross Creek
The document posted in the web link below explains why flood forecast inundation maps help the public understand flood risks.
Why Use Flood Forecast Inundation Maps Handout (pdf, 1.5 MB)
The combination of the three federal agencies work makes for a very helpful tool for communities:
1) The U.S. Army Corps of Engineers Hydrologic Engineering Center offers technical tools which USACE and many others use to better understand flood risks and also to evaluate feasible structural features that may help reduce the impact of floodwaters. One tool is the hydraulic modeling software, HEC-RAS. This web page offers more details:
USACE Hydrologic Engineering Center (web page)
2) This web link is to the federal agency that manages most of the stream gage information across the Nation.
U.S. Geological Survey National stream gage map (web page)
3) This is a web link to the federal agency handling National and local flood forecasting and flood warnings:
National Weather Service, Advanced Hydrologic Prediction Service (web page)
The following web link is a slide presentation used when the Federal Executive Board, Innovation Connection Awards, recognized the interagency partnership doing the multiple project sites across Kansas and Missouri. The partnership includes the U.S. Army Corps of Engineers Kansas City District, the National Weather Service, and the U.S. Geological Survey. The FEB awarded this team the 3rd Place Innovation Connection trophy.
Presentation to the Federal Executive Board 1-Aug-2017 (pdf, 2.4 MB)
2-D Inundation Map Products
Inundation maps are also being created for leveed areas using 2-dimensional modeling results. The following files are PDFs of images for projects in Kansas that are being used to help those in leveed areas better understand the limits of the abilities of levees to reduce flood risks. These are only offered for use demonstrating what USACE technical services are available. Readers should contact their local USACE district for proper interpretation of these map products.
This example demonstrates the use of a color ramp with an aerial photo to illustrate depth of flooding in leveed areas:
This example shows how the hydraulic engineers and geospatial analysts can establish a map book with over a street map:
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