FEMA flood zone rules in Round Rock, TX — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Round Rock has areas in FEMA flood zones along Brushy Creek and other waterways. Properties in Special Flood Hazard Areas (SFHA) require flood insurance and must comply with floodplain development regulations.
Portions of Round Rock lie within FEMA-designated Special Flood Hazard Areas (SFHA), primarily along Brushy Creek and its tributaries. The City of Round Rock participates in the National Flood Insurance Program (NFIP) and maintains a Floodplain Development Permit program. Development within the 100-year floodplain (Zone A or AE) requires a Floodplain Development Permit from the City Engineer. New structures must be elevated above the Base Flood Elevation (BFE). Round Rock also participates in FEMA's Community Rating System (CRS), which may allow discounts on flood insurance premiums. The city's floodplain maps are available on the FEMA FIRM portal.
Unpermitted floodplain development: fines up to $2,000/day and mandatory removal. Loss of NFIP eligibility possible for chronic violations.
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