Houston, Texas Flood Risk Score
Houston, Texas has a 6.3 / 10 flood risk score from current PerilScore data.
Computed from decades of public weather data using physics-based probability modeling.
Move from local context to the property
Enter a US street address for the building-level PerilScore. The local score provides context rather than a parcel-level result.
- Risk Score (0-10)
- 6.3
- Historical Events
- 1
- Avg Return Period
- No data
- Data Confidence
- 90%
in the record
years between events
Houston, Texas has a 6.3 / 10 flood risk score, which falls in the very high band and is in the 93th percentile among scored local areas in this model. The score was snapshotted on 2026-08-10 with 35% model confidence.
What drives this score here?
riverine flood risk is the largest V5 contributor from registered local hazard drivers. For this location, the score card also highlights these model signals:
- FEMA score: 1.5
- Riverine: 1.9
- Pluvial: 2.5
- Coastal: 0.8
The strongest component metrics in the snapshot are:
- 24 Hour Atlas 14 Rainfall: model component 0.140. The raw value is 11.0 in.
- Pluvial Rainfall Risk: model component 0.045. The raw value is 2.5 in.
- Noaa Flood History: model component 0.038. The raw value is 1.00.
For flood exposure, the useful signals are FEMA zone score, riverine risk, rainfall-driven pluvial risk, coastal risk, compound interaction, and flood history. This snapshot shows riverine at 1.9, pluvial at 2.5, and coastal at 0.8.
How to read the location signal
This page uses the representative local model area around the large city centroid for Houston, Texas. That local model area is roughly 5 square kilometers, so the score is a practical place-level signal for browsing and comparison. The building-level view comes from entering a street address.
Because Houston is a large population center, this page is included as a representative local area view. Boundary-wide aggregation belongs in a separate county or citywide rollup.
The confidence level is limited, so the score is best read as an early signal before checking the address-level result.
The source record for this page is: PerilScore local flood local model feature table with NFHL, Atlas 14, event, and compound drivers
Why building details matter
A street-address score can account for the unique characteristics of a specific building, including age, construction type, roof shape and condition, occupancy, elevation, defensible space, drainage, terrain, and nearby exposure. Those details can change resilience or susceptibility around the same location-level score.
Use this city page when you want a recognizable local reference point for comparing nearby ZIPs and counties. Since the percentile is elevated, it is worth comparing nearby pages before relying on the area score alone.
Use the PerilScore app to enter a street address and see the full property-specific score.
The local score is the starting point
A specific building can perform differently from the surrounding area. The PerilScore street-address check adds building age, construction type, roof details, occupancy, elevation, defensible space, drainage, terrain, and nearby exposure to the flood layer shown here.
PerilScore