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Floodplain Use Permit

Floodplain Use Permit Links
• Floodplain Use Permit Application
• Floodplain Use Permit Checklist
• Property Owner Authorization Form
• Floodplain Appeal Application
• Floodplain Variance Application
• Floodplain Directory of Documents
• Floodplain Management
• Contact Us - Floodplain

• Floodplain Regulations
(revised November 2011)
• Fee Schedule
• Licensing Time Frames

Working together, we can create a built environment that preserves water conveyance and provides habitat for wildlife.

Steps to Obtaining a Floodplain Use Permit

Any improvements to land, including construction of a building, adding fill or grading, and installing walls or fencing, can adversely affect the natural flow of water in a floodplain or watercourse.

If a property owner within Maricopa County wishes to perform construction or other improvements to property located within a delineated floodplain, a Floodplain Use Permit is required. The Flood Control District enforces the Floodplain Regulations for Maricopa County, which regulate the construction of buildings and other improvements within designated floodplains to alleviate the upstream or downstream impacts.

When required, the Flood Control District reviews each permit application to ensure it complies with the Floodplain Regulations. For more information, please go to the Floodplain Management section of this Web site.

Please refer to the Floodplain Directory of Documents for a compilation of Ordinances, Codes, Substantive Policy Statements, References and Resources that may be of use in the preparation of your floodplain use permit submittal documents. This list will be updated on an as-needed and regular basis.

To help you complete the application, the District has provided a detailed submittal checklist to guide you through what is required to be included with the application. The checklist is used in conjunction with the Floodplain Regulations and the Fee Schedule, which is included in the regulations as Appendix A.

Should you have any questions or need assistance throughout the application process please contact our Development Services office by phone at (602) 506-2419 or email at

An applicant may receive a clarification from the District of its interpretation or application of a statute, ordinance, regulation, executive order, delegation agreement or authorized substantive policy statement as provided in A.R.S. Section 48-3649.

If your property is located in one of the following communities that handle their own floodplain management please contact them regarding floodplain questions at the links or phone numbers provided below:

If your property is located in one of the following communities for which the Flood Control District of Maricopa County handles the floodplain management, read the steps to obtain a Floodplain Use Permit within an incorporated community in Maricopa County.

  • City of Buckeye
  • Town of Carefree
  • Town of Cave Creek
  • City of Chandler
  • City of El Mirage
  • Town of Gila Bend
  • Town of Guadalupe
  • City of Litchfield Park
  • City of Mesa
  • Town of Queen Creek
  • City of Surprise
  • City of Tolleson
  • Town of Youngtown
  • Town of Wickenburg

If your property is not located in any of the communities listed above, it is most likely located in unincorporated Maricopa County, read the steps to obtain a Floodplain Use Permit within unincorporated Maricopa County.

If you are unsure about where your property is located, please contact the Floodplain Management & Services Information Desk at (602) 506-2419.

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