Flood Maps

In addition to providing flood insurance and reducing flood damages through floodplain management regulations, the NFIP identifies and maps the Nation's floodplains. Mapping flood hazards creates broad-based awareness of the flood hazards and provides the data needed for floodplain management programs and to actuarially rate new construction for flood insurance. 

Please Note: Accuracy of products varies. Vertical datum of BFE conversions is needed from previous maps.

Current Maps

​The Flood Control Zone District is currently working with the Yakima County Geographic Information Services (GIS) department to develop an online interactive map to display Special Flood Hazard Areas (SFHAs) and other flood-related data in Yakima County. The interactive map will be available for public use at a later date. Until then, please use the Yakima County Planning Portal Map to view flood-related information in Yakima County.

NOTE: Some internet browsers may no support the interactive map (Google Chrome is the most seamless browser to display the map).

Pending Maps

Pending flood hazard data provides an early look at a location or community's projected risk to flood hazards. Pending data may include:
  • New or revised Flood Insurance Rate Maps (FIRM)
  • Flood Insurance Study (FIS) reports
  • Flood Risk Reports (FRR) 
  • etc.
On October 21, 2021, a Letter of Final Determination (LFD) for the Upper Naches River and Cowiche Creek will become effective and updated flood data will officially be the basis for regulation. Pending maps showing updates to the Upper Naches - Cowiche Flood Hazard Viewer here or using the Washington State Department of Ecology's Flood Map Comparison (Effective vs. Pending) "swipe map" here.

Federal Emergency Management Agency (FEMA) Maps

Federal Flood Insurance Rate maps are available on the FEMA website, in addition to community numbers, and base flood elevations.
FEMA Mapped Floodplains in Yakima County.emf
How to determine if you are in a Flood Hazard Zone:
  1. Go to FEMA's Flood Map Service Center
  2. Enter the address (include city and zip code), place name, or coordinates of the location to be assessed and click "Search"
  3. Assess current flood hazard determinations and other flood-related data by viewing the interactive map (scroll down if necessary)
TO PRINT: Click "DYNAMIC MAP" button and a separate window will appear displaying the flood hazard information for the area searched. 

TO DOWNLOAD (.tif/.tfw): Click "MAP IMAGE" button to download the .tif and .tfw files to be used for GIS applications. 

Flood Hazard Mapping

The Flood Control Zone District has provided FEMA with scientific data to increase the resolution and accuracy of the flood hazard mapping for:

  • Ahtanum Creek
  • Cowiche Creek
  • Naches River
  • Wide Hollow Creek
  • Yakima River