Floodplain Mapping Projects

FEMA has available several services for different phases of a mapping project. Preliminary, Pending and Effective products can be downloaded on from the Map Service Center. FEMA also maintains several map viewers:

National Flood Hazard Layer - displays the effective digital data
> Flood Map Changes Viewer  - includes the Preliminary and Pending digital map data, with a Changes Since Last FIRM layer that compares the Preliminary/Pending data with the effective data

KDA maintains project-specific map viewers for active projects that are based on the same digital data. The web links are included on the project pages below. 

Upper Kansas Custom Watershed

The Upper Kansas Custom Watershed Floodplain Mapping update produced Base Level Engineering (BLE) floodplains for the entire custom watershed. Enhanced data development is anticipated to began in 2022 for the areas for Jackson and Pottawatomie Counties. This website will be updated with relevant content as the project moves forward. 

Jackson County

Jackson Co DD Kickoff - 6/16/2022

Jackson County Scoping Map

Pottawatomie County

Pottawatomie Co DD Kickoff - 6/16/2022

Pottawatomie County Scoping Map

Shawnee County

A floodplain mapping project is being initiated to developed updated floodplain maps for Shawnee County. The project area includes the cities of Auburn, Rossville, Silver Lake, Topeka, and Willard. The project web page will be updated as the project moves forward.

Shawnee Co DD Kickoff - 4/25/2023



Upper Kansas Kickoff Meeting - 2-17-2021

Upper Kansas Discovery Meeting - 9-2021

Upper Kansas Project Area

Unsure which watershed you are in?  Use the following link to find out.
Kansas HUC 8 Watershed Map

Or reference the map below for Custom Watershed project areas.

Project Reference Map

Use this page to find relevant information on floodplain mapping projects.  Click on the map below to view current or proposed floodplain mapping projects.  Use the Kansas Floodplain Map Viewer for current effective floodplains.