Comprehensive Flood Hazard Management Plans

Purpose
Comprehensive Flood Hazard Management Plans (CFHMP) contain recommendations on future flood hazard management alternatives for problematic areas. Once the plan is adopted by the local government, it serves as a policy document, for the County and Cities that adopt it.

The Plan itself is not a regulatory document, but identifies and prioritizes flood control and mitigation projects for the community. Adoption of the plans increases the chances of State and Federal funding of projects and post flood disaster relief.

Steps
The main steps in a CFHMP are as follows:
  •     Establish a citizen and agency participation process
  •     Quantify the problem and objectives for flood hazard management
  •     Determine the need for flood hazard management measures
  •     Identify and evaluate alternative flood hazard management measures
  •     Develop a flood hazard management strategy
  •     Submit the final CFHMP to Ecology
Naches - U.S. 16th
Study Areas Map
Plans
Yakima County has completed, or is currently working on, 3 Plans:
  • Ahtanum-Wide Hollow CFHMP: The Ahtanum-Wide Hollow CFHMP covers the entire Ahtanum and Wide Hollow watersheds, focusing on the Ahtanum Valley Floor, West Valley, Union Gap, and parts of Yakima. The Yakama Nation is a partner in the project - Ahtanum Creek forms the northern boundary of the Yakama Reservation. This plan was forwarded to the local governments for adoption in October 2011 and adopted by the Board of County Commissioners October 16, 2012.
  • The Naches River CFHMP (PDF): The Naches River CFHMP covers the Naches River from the confluence of the Naches and Tieton Rivers to the Twin Bridges northwest of Yakima. The Naches River CFHMP was adopted by the participating agencies on the following dates:
    • Board of County Commissioners - August 22, 2006
    • Naches Town Council - September 11, 2006
    • Ecology - October 12, 2007
  • The Upper Yakima River CFHMP
    • 1998 Upper Yakima River CFHMP
    • 2007 Upper Yakima River CFHMP Update: The Upper Yakima River CFHMP covers the Yakima River between the mouth of the Yakima River Canyon to Union Gap, and the Naches River from it’s mouth at the Yakima River up to the Twin Bridges. The Plan was adopted by the County in 1998, and amended in 2007 as new information has emerged about the condition of the Yakima River. The amended 2007 Upper Yakima River CFHMP was adopted by the participating agencies on the following dates:
      • Board of County Commissioners - June 19, 2007
      • Selah City Council - June 26, 2007
      • Union Gap City Council - August 13, 2007
      • Yakima City Council - May 6, 2008
      • Ecology - January 22, 2010
The Lower Yakima River CFHMP will be initiated following coordination discussions with the Yakama Nation.