Floodplain Mapping Projects

Walnut Custom Watershed


The Walnut Custom Watershed Floodplain Mapping update project kicked off on December 12, 2019. Enhanced data development is anticipated to begin in 2021 or 2022 for the areas that will undergo a regulatory update.  This website will be updated with relevant content as the project moves forward.


Watershed Discovery Information

Walnut Custom Watershed Kickoff / Initial Map Review 12-12-2019

Walnut Kickoff Meeting Handout - El Dorado

Walnut Kickoff Meeting Handout - Winfield

Walnut Kickoff Notes - El Dorado 12-12-2019

Walnut Kickoff Notes - Winfield 12-12-2019

Community Maps - Initial Map Review 12-12-2019


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 & Custom Watersheds Oct. 1, 2019