Neighborhood · Flood Risk
FloodMapsGet a detailed flood report of any Houston property
MAAPnext 2026 Status
Under Review
Updated maps pending for Buffalo Bayou tributary areas
Primary FEMA Zones
Harvey Impact
Low~150 FEMA claims filed in 2017
Primary Watershed
Buffalo Bayou
Drains 102 sq mi through central Houston
Est. Flood Insurance Cost
$800–$2,200
Based on estimated annual flood insurance premium
Drainage Infrastructure
Tanglewood/Briar Hollow improvements
Local drainage capacity upgrades and stormwater detention
No, not typically. Most Tanglewood properties sit in FEMA Zone X or X (Shaded), which don’t require flood insurance for federally backed mortgages. However, Zone X (Shaded) indicates a 0.2% annual flood chance — not negligible over a 30-year mortgage. With policies ranging $800–$2,200 annually, many Tanglewood buyers opt for voluntary coverage as a precaution.
They’re under review. FEMA’s MAAPnext program is evaluating Buffalo Bayou tributary areas that affect Tanglewood, incorporating new LiDAR elevation data and updated rainfall models. No preliminary maps have been released yet for this section. Current Zone X and X (Shaded) designations remain in effect, but Tanglewood homeowners should monitor for potential reclassifications ahead of final adoption.
Minimally compared to nearby neighborhoods. Tanglewood recorded approximately 150 FEMA flood claims after Harvey — far fewer than adjacent Hunters Creek Village or River Oaks. The neighborhood’s interior location, slightly higher elevation, and distance from Buffalo Bayou’s main channel limited direct flooding, though some low-lying blocks along Briar Hollow experienced localized street drainage issues.
Tanglewood benefits from sitting slightly inland from Buffalo Bayou with no direct bayou frontage, unlike neighboring River Oaks or Hunters Creek Village. Its mature tree canopy and larger lot sizes provide natural drainage advantages. The primary risk comes from localized street flooding during extreme rainfall events rather than bayou overflow, keeping insurance costs relatively low at $800–$2,200 annually.
Generally yes — Tanglewood is one of Houston’s lower-risk affluent neighborhoods. Most properties sit in FEMA Zone X with limited Harvey damage history. However, blocks nearest the Galleria area and Briar Hollow can experience street flooding during heavy rainfall. A FloodMaps report confirms your specific elevation, drainage exposure, and AI-analyzed risk score before purchasing.
Tanglewood is a historic, tree-lined residential community in western Houston’s Harris County, situated near the Galleria area and buffered from Buffalo Bayou’s main channel. With most properties falling within FEMA Zone X and some in Zone X (Shaded), Tanglewood carries lower flood risk than many neighboring communities — but localized drainage concerns make property-level analysis important for buyers of high-value homes.
FloodMaps provides address-level flood risk reports for every property in Tanglewood, combining FEMA flood zone designations, USGS 3DEP LiDAR elevation data, Buffalo Bayou watershed proximity analysis, Tanglewood/Briar Hollow drainage infrastructure data, Hurricane Harvey damage records, and live Houston 311 flood reports. Each report includes base flood elevation comparisons, freeboard calculations, and an AI-powered risk summary.
If you’re considering a purchase in Tanglewood, evaluating voluntary flood insurance options, or advising clients on properties near the Galleria corridor, search your address for a comprehensive flood risk analysis — including elevation data, Harvey claim history, and drainage risk factors that standard FEMA flood maps don’t capture.