Sunflower Fire Floodplain and Emergency Action Plan


  • Post-fire conditions in the area created the need for a quick inundation area analysis.
  • Any at-risk properties would need to be identified.
  • Flood travel times to affected properties from upstream gage would need to be estimated.


  • Multiple profile HEC-RAS models using Countywide 10-ft contour topography were developed.
  • Inundation areas and flow velocity zones were delineated using RAS Mapper software.
  • Travel times were computed using the results of HEC-RAS.


  • Inundation maps were provided for 10, 20, and 30 thousand cfs profiles.
  • Travel time estimates were included for each profile.
  • Estimates of the relation to potential rainfall based on USFS research documents from Southern AZ were provided.


Maricopa County, AZ


Flood Control District of Maricopa County

Project Leads

Ted Lehman