The federal government has updated maps showing new areas at risk of flooding around Maricopa County.
The Federal Emergency Management Area (FEMA) maps show around Scottsdale, Phoenix and unincorporated parts of Maricopa County may see changes in insurance rates because of increased flooding risk.
Residents with information on hydraulic or other technical data can appeal the flood risk information on the proposed maps.
"The challenges have to be defensible from an engineering standpoint. It can’t be a challenge where somebody puts up their hand or writes a letter and says it hasn’t flooded here in 30 years," FEMA Floodplain Manager Frank Mansell said.
The agency is accepting appeals on the maps until April 15.