County · Flood Risk
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SFHA Coverage
~12%
Primarily along the Brazos River corridor and tributary creeks
Harvey Claims Filed
~3,500
Moderate impact concentrated near the Brazos River floodplain
Active Flood Gauges
10+
Monitored by Brazos River Authority and USGS
Primary Watersheds
Brazos River, Clear Creek, Spring Creek
Brazos River forms the county's eastern boundary
Municipalities
Hempstead, Prairie View, Brookshire, Waller
Rural county experiencing suburban growth from Houston expansion
Infrastructure
Limited drainage infrastructure
HCFCD partnership projects and county road drainage improvements
Yes, if your property is in a FEMA Special Flood Hazard Area (zones AE, A) and you have a federally backed mortgage. About 12% of Waller County is in high-risk zones, concentrated along the Brazos River and tributary creeks. Annual premiums under NFIP Risk Rating 2.0 typically range from $400 to $2,200 given the county's relatively rural land use.
Modestly. Waller County has limited dedicated drainage infrastructure compared to urban counties. Improvements include road drainage upgrades along FM 529 and FM 362, culvert replacements, and partnership projects with the Harris County Flood Control District on shared Spring Creek watershed areas. The county continues to pursue state and federal grant funding for additional projects.
Yes. FEMA's MAAPnext program is updating flood maps with new rainfall models and LiDAR elevation data. Properties near the Brazos River floodplain and along Clear Creek may see zone reclassifications. As suburban development accelerates in eastern Waller County near Brookshire, new impervious surface data could expand floodplain boundaries in previously rural areas.
Moderate impact. The Brazos River crested at record levels, flooding rural properties and agricultural land along the eastern county boundary. Brookshire and Waller experienced localized street flooding. The county recorded approximately 3,500 FEMA damage claims, with most damage concentrated in low-lying areas near the Brazos River and its tributary creeks.
Search your address on FloodMaps for a free instant lookup showing your official FEMA flood zone designation, ground elevation, and parcel elevation profile. For detailed analysis including Brazos River proximity modeling, Harvey damage records, subsidence data, and an AI-generated risk score, upgrade to a Premium Report starting at $29.
Waller County is a rural and rapidly suburbanizing county northwest of Houston, bordered by the Brazos River to the east and encompassing the communities of Hempstead, Prairie View, Brookshire, and Waller. Approximately 12% of the county lies within FEMA Special Flood Hazard Areas, with Zones AE and A concentrated along the Brazos River corridor and its tributary creeks including Clear Creek and Spring Creek. As Houston's growth pushes westward, new development in eastern Waller County is changing drainage patterns and making property-level flood data increasingly important.
FloodMaps combines FEMA National Flood Hazard Layer data with USGS 3DEP LiDAR elevation models, Brazos River Authority gauge readings, Hurricane Harvey damage records, and county drainage infrastructure data to deliver a property-specific flood risk assessment. Premium Reports include AI-analyzed risk scores, parcel elevation profiles, subsidence trends, and Brazos River flood depth modeling — critical for a county where new subdivisions are being built in formerly agricultural floodplain areas.
Whether you're purchasing a home in Brookshire, evaluating rural acreage near Hempstead, or advising clients on Waller County real estate, understanding flood risk at the address level is essential — especially as suburban growth brings new impervious surfaces and altered drainage to this historically rural county. Search your address on FloodMaps to get started.