Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 402 Main St, Houston, TX 77002

HCAD #0010440000020
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🌍Environmental Assessment

This comprehensive report analyzes both flood risk and industrial pollution exposure for this property. The assessment combines multiple data sources including USGS elevation, FEMA flood zones, historical storm modeling, and EPA Toxic Release Inventory records.

🌊Flood Risk Analysis
FEMA Zone X
Property Overview

This section shows the fundamental characteristics of the property, including its elevation above sea level, FEMA flood zone designation, and our calculated overall flood risk rating based on historical data and topographic analysis.

Address
402 Main St, Houston, TX 77002
Elevation
45.57 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very High
Property flooded at 9.84ft depth.
Risk Assessment Outputs

These detailed metrics show the technical outputs from our flood risk model. They include predicted water depths at the property during a 5000-year flood event and estimated flood damage based on USACE methodology.

Risk Rating
Very High
Flood Depth
9.84 ft±0.5 ft
Depth of water above ground level.
Water Surface Elevation (WSE)
55.42 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
105.4 acres
35.7% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$2,258,166
Vacant lot (no building data).
Depth-Damage (Neighborhood)
$0
Vacant lot (no building data).
Analysis Method
COG Combined 5000 Model
Raster-based flood inundation query
Flood Simulation

This simulation shows whether the property would flood based on a 5000-year flood event with 3m (9.84ft) water level. Use the interactive tool to explore different scenarios.

Property Would Be Flooded
Flood Depth: 9.84 feet
Severity
Severe
Adjust Flood Simulation

The analysis above uses default settings (5000-year flood, 3m/9.84ft water level). To explore different flood scenarios with interactive maps, return to the main tool:

Open Interactive Analysis Tool
Flood Risk Recommendations

Based on the property's flood risk profile, here are specific action items to consider.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
39.6th percentile
Property Pollution Ranking
Moderate
Higher pollution than 60% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
60 thousandlbs
Above Typical
9.2x more than typical Houston property
≈ 3 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
60 thousandlbs
High
12.5x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
54lbs
Above Typical
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
7
Industrial facilities within 2 miles
💡
Why It Matters: High chemical activity nearby can indicate industrial zones, truck traffic, or potential odor and noise issues. These factors may affect air quality, long-term property desirability, and neighborhood character. This data helps you understand the industrial footprint around your property.
Houston Metro Benchmarks

Comparison with typical Houston properties (based on 10,000 randomly sampled homes). All measurements are for chemicals released within a 2-mile radius.

PeriodTotalAirWater
Typical Houston Property (2014-2024)6,524 lbs4,822 lbs0 lbs
This Property (2014-2024)60,181 lbs60,127 lbs54 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)68 lbs68 lbs0 lbs
How This Property Compares to Houston Metro

Based on a random sample of 10,000 Houston properties, this chart shows the distribution of pollution levels across the metro area. The highlighted bar indicates where this property falls compared to other homes. Lower percentiles mean higher pollution exposure.

0-9thMost Polluted
9.9%
10-19th
10.1%
20-29th
9.9%
30-39th
10.1%
40-49th
9.7%
50-59th
10.2%
60-69th
6%
70-79th
5.8%
80-89th
4.3%
90-100thLowest Pollution
34.2%
Higher pollution than 60% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 40-49th percentile (slightly higher than average).
📋
Top chemicals released near this property (past 10 years):
N-Methyl-2-pyrrolidone, Ammonia, Vinyl acetate, Copper, Zinc compounds
View the full list of 14 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(14 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1N-Methyl-2-pyrrolidone872-50-431,840 lbs0 lbs31,840 lbs
2Ammonia7664-41-725,000 lbs0 lbs25,000 lbs
3Vinyl acetate108-05-41,355 lbs0 lbs1,355 lbs
4Copper7440-50-81,277 lbs0 lbs1,277 lbs
5Zinc compoundsN982163 lbs0 lbs163 lbs
6Lead compoundsN42096 lbs54 lbs150 lbs
7Cadmium compoundsN078106 lbs0 lbs106 lbs
8Chromium compounds (except for chromite ore mined in the Transvaal Region)N09074 lbs0 lbs74 lbs
9Cadmium And Cadmium CompoundsN07870 lbs0 lbs70 lbs
10Nitric acid7697-37-250 lbs0 lbs50 lbs
11Cyanide compoundsN10650 lbs0 lbs50 lbs
12Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51125 lbs0 lbs25 lbs
13Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09019 lbs0 lbs19 lbs
14Lead And Lead CompoundsN4201 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Copper, Zinc compounds, Cadmium And Cadmium Compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Cyanide compounds
View the full list of 8 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(8 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Copper7440-50-822 lbs0 lbs22 lbs
2Zinc compoundsN98214 lbs0 lbs14 lbs
3Cadmium And Cadmium CompoundsN07810 lbs0 lbs10 lbs
4Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs6 lbs
5Cyanide compoundsN1065 lbs0 lbs5 lbs
6Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5115 lbs0 lbs5 lbs
7Nitric acid7697-37-25 lbs0 lbs5 lbs
8Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs
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