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. 

Brown County


Brown County Preliminary Maps are in the adoption phase and had their Letter of Final Determination (LFD) issued December 1, 2021, and will become effective June 1, 2022

Brown County Project Review Web Map

Brown County CCO Presentation 1-26-2021

Brown County Contact Information

Previous presentations and information:


Public Open House Presentation 6-4-2020 

Brown County Flood Risk Review Presentation 10-8-2019

Brown County Flood Risk Review Handout

Brown County Kickoff Meeting Handout 11-15-2018

Brown County Kickoff Meeting Presentation 11-15-2018

Brown County Scoping Map
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.

Project Status January 14, 2022