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Kittitas County Floodplain Management

Flood Control Zone District

In 2012, the Board of County Commissioners formed a Flood Control Zone District by Resolution 2012-081 and voters approved funding for the district. The District serves residents in both unincorporated areas and incorporated towns and cities. Kittitas County Public Works provides staff for District activities and the annual work plan is developed and approved by the Flood Control Zone District Advisory Committee.

The Flood Control Zone District funds and implements flood‐reduction projects and programs. District activities include:

  • providing technical assistance about flood risk and flood mitigation strategies;
  • improving stream conveyance;
  • maintaining levees and other flood control structures;
  • constructing flood alleviation projects;
  • purchasing properties in strategic locations where we can reduce our dependence on levees by implementing integrated floodplain management activities

Floodplain Development

Floodplain development is managed by the local jurisdiction where the activity occurs. All communities that are in the National Flood Insurance Program must require permits for activities that occur within the Special Flood Hazard Area; which is the area that has a 1% chance or greater of flooding each year (also known as the 100-year floodplain).

Visit for information about the National Flood Insurance Program.

Floodplain development permits are required prior to beginning any work on improved or unimproved real estate within the 100-year floodplain. This includes, but is not limited to, buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations or storage of equipment or materials located within the areas of special flood hazard.

Floodplain permits applications for floodplain development activities within unincorporated Kittitas County can be found on the Fees and Applications page.

How to use COMPAS to determine if your property is in the floodplain.

Elevation Certificate Search (Option 1)
Elevation Certificate Search (Option 2)

News and Updates

Federal Emergency Management Agency Floodplain Map Updates 05/21/2020

The Federal Emergency Management Agency (FEMA) has been working to update Flood Insurance Rate Maps throughout Kittitas County. The current flood maps were developed and adopted 1981. The next step in the new map adoption process is for FEMA to issue a Letter of Final Determination. Six months after FEMA issues this letter, the new maps will become effective. Kittitas County does not know when FEMA will issue the Letter of Final Determination and when the new maps will become effective – owing to the current pandemic. Landowners interested learning more about how anticipated map changes may impact them can contact Public Works for additional information. Public Works will post the schedule for map adoption once we receive notice from FEMA.

FEMA Grants Kittitas County Reduction in Flood Insurance 04/28/2020

The Federal Emergency Management Agency's (FEMA) Community Rating System (CRS) enables communities to lower flood insurance rates. This month FEMA notified Kittitas County that, due to their effective floodplain management, Kittitas County would retain its Class 6 rating. This rating reduces flood insurance premiums by 20 percent.

Notice of Availability of Service to Provide Flood Map Information

Upon request, staff from the Kittitas County Flood Control Zone District provides information about whether a property is within a Special Flood Hazard Area (SFHA), which zone it is in, and the base flood elevation. Much of this information is also available on our COMPAS online mapping service and at FEMA’s Mapping Service Center. If you would like to request this information, please call 509-962-7523. We will need the parcel number or street address. There is no charge for this service.