Carrollton updates floodplain maps and launches interactive online tool; notifications sent for two creeks

City staff briefed Carrollton City Council on progress updating floodplain maps and on a new interactive online mapping tool for residents. Staff reported that notices were sent to affected property owners for two basins and that the city’s website now includes streamlined guidance and links to elevation certificate forms.

Staff said updated panels for Upper Indian Creek became effective in February 2025 and that Forno Creek panels will be effective in June 2025. The presentation noted the city’s floodplain study covers four basins — Dudley, Forno, Indian and Hutton — and that some study boundaries extend beyond Carrollton limits. Staff emphasized the interactive map lets residents search an address quickly, take screenshots and print results as a faster alternative to navigating FEMA’s site.

The webpage consolidates common guidance (how to obtain an LOMA/LOMR or elevation certificate, how to hire a licensed surveyor) and provides contact information for the city’s certified floodplain manager. Staff said the map and guidance aim to make it easier for residents and prospective homebuyers to determine whether a property falls in the regulated floodplain.

Council members asked about properties that newly appear in the floodplain and whether mitigation projects or future bond funding could restore prior protections; staff said such options would be evaluated as part of future drainage projects and that the mapping change itself is based on updated hydrologic modeling.

Staff said they will keep the city drainage and floodplain page updated and encouraged affected property owners to contact the engineering division for next steps and options for elevation certificates or mitigation projects.