Floodplain Management Plan 2020 Update

Maricopa County participates in the National Flood Insurance Program (NFIP) and its additional Community Rating System (CRS) Program.  As a requirement of the CRS Program, the District developed and periodically updates its Floodplain Management Plan (FMP).  The FMP communicates an overall strategy of programs, projects and measures that when implemented should reduce the adverse impact of flooding in the community.  The FMP also identifies flood hazards in the community and is used by the District as we address flooding issues in unincorporated Maricopa County.

As a Repetitive Loss Community and holding a Class 4 in the NFIP CRS Program, the County is required to have a Floodplain Management Plan.  The Class 4 rating allows residents in the unincorporated county to receive up to a 30 percent discount on flood insurance.  Under the CRS, the flood insurance premiums of a community’s residents and businesses are discounted to reflect that community’s work to reduce flood damage. 

Per the requirements of the CRS program, the County must prepare an FMP every five years.  The District last updated the County’s Plan in November 2015.  The 2015 Floodplain Management Plan can be found in the On-Line Library on the Flood Control District’s website.  As part of the 2020 update, a Floodplain Management Plan Committee (Committee) has been established made up of representatives of Maricopa County, the State of Arizona, various federal agencies, municipalities, organizations and the general public.  The Committee will help identify and prioritize flood hazards and potential solutions. 

Review and Approval Process 

November 2020

August -October 2020

  • Review Comments
  • Finalize FMP Update
  • Obtain BOD & Supervisors Adoption
  • Finalize FMP Record Copy
  • 2020 FMP Submitted for Evaluation
  • Re-scheduled Verification Audit in November

July 2020

  • Obtain Additional Public Comments
    • The public review closed on August 7, 2020
    • Comments can be sent to Tim.Murphy@maricopa.gov   
  • Stakeholder Review
  • Committee review

March-June 2020

  • District Review

February 2020

  • Review of Action Items & Proposed Responsible Parties
  • Comments on Proposed Parties
  • Draft FMP Update
  • Public Open House to Obtain Input on Recommendations

Step 1 - Project Organization

Step 2 - Community Involvement Survey

Floodplain Management Plan Survey (This survey is now closed.)

Survey Results

Step 3 - Interagency Coordination

Step 4 -Identify and Assess the Hazard 

Step 5 - Identify and Assess the Risk

Step 6 - Set Floodplain Management Plan Goals

Step 7 - Review Possible Activities 

Step 8 - Select the Action Items

Step 9 - ADOPT the Plan

Step 10 - Implement, Evaluate and Revise the Plan

  1. Project Schedule
  2. Additional Documents

February 13, 2020          3:00pm – 6:00pm               Public Open House 

Public Notice


January 16, 2020           9:00am – 12:00pm             Draft an Action Plan

Committee Presentation

Meeting Notes

Survey Results

December 5, 2019         9:00am – 12:00pm             Review Possible Activities

Committee Presentation

Meeting Notes

November 14, 2019       9:00am – 12:00pm             Set Goals

Committee Presentation

Meeting Notes

November 4, 2019         3:00pm - 6:00pm                Public Open House

Public Notice

October 24, 2019           9:00am – 12:00pm             Assess the Problem

Committee Presentation

Meeting Notes

October 3, 2019             9:00 am – 12:00pm            Assess the Flooding Hazard

Committee Presentation

Meeting Notes

Contact Info

If you have any questions or comments regarding the plan, please address them to:

Tim Murphy, P.E, CFM

Project Management Branch Manager