Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 232 N 4th St, La Porte, Tx 77571

HCAD #0231960640001
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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
232 N 4th St, La Porte, Tx 77571
Building Size
1,514sqft
Total structure area from HCAD building records.
Elevation
20.43 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)
30.27 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
284.0 acres
96.3% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$106,252
Based on HCAD building value of $163,466.
Depth-Damage (Neighborhood)
$91,413
Based on neighborhood replacement cost.
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
25.9th percentile
Property Pollution Ranking
Moderate
Higher pollution than 74% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
435 thousandlbs
Very High
66.7x more than typical Houston property
≈ 22 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
435 thousandlbs
Very High
90.2x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
0lbs
None
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
11
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)435,175 lbs435,175 lbs0 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)49,588 lbs49,588 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 74% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile.
📋
Top chemicals released near this property (past 10 years):
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen fluoride, Methanol
View the full list of 31 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(31 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9216,585 lbs0 lbs216,585 lbs
2Ammonia7664-41-787,668 lbs0 lbs87,668 lbs
3Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
4Hydrogen fluoride7664-39-317,939 lbs0 lbs17,939 lbs
5Methanol67-56-115,211 lbs0 lbs15,211 lbs
6Chlorine7782-50-510,430 lbs0 lbs10,430 lbs
7Xylene (mixed isomers)1330-20-710,381 lbs0 lbs10,381 lbs
8Ethylene74-85-17,000 lbs0 lbs7,000 lbs
9Propylene115-07-14,500 lbs0 lbs4,500 lbs
10Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
11Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
12Chlorobenzene108-90-73,127 lbs0 lbs3,127 lbs
13Methyl methacrylate80-62-63,050 lbs0 lbs3,050 lbs
14Phosgene75-44-51,958 lbs0 lbs1,958 lbs
15Acetonitrile75-05-81,765 lbs0 lbs1,765 lbs
16Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
17Methyl tert-butyl ether1634-04-41,591 lbs0 lbs1,591 lbs
18Triethylamine121-44-81,515 lbs0 lbs1,515 lbs
19Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
20Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
21sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
22Ethylene oxide75-21-81,431 lbs0 lbs1,431 lbs
23Toluene108-88-31,261 lbs0 lbs1,261 lbs
24n-Butyl alcohol71-36-31,164 lbs0 lbs1,164 lbs
25N,N-Dimethylformamide68-12-2535 lbs0 lbs535 lbs
26Manganese7439-96-5511 lbs0 lbs511 lbs
27Propylene oxide75-56-9371 lbs0 lbs371 lbs
28Dichloromethane75-09-2251 lbs0 lbs251 lbs
29Chromium7440-47-345 lbs0 lbs45 lbs
30Ethylene glycol107-21-114 lbs0 lbs14 lbs
31Butyl acrylate141-32-25 lbs0 lbs5 lbs
📋
Top chemicals released near this property (2024 only):
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen fluoride, Chlorine
View the full list of 20 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(20 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-929,545 lbs0 lbs29,545 lbs
2Ammonia7664-41-77,795 lbs0 lbs7,795 lbs
3Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
4Hydrogen fluoride7664-39-31,738 lbs0 lbs1,738 lbs
5Chlorine7782-50-5961 lbs0 lbs961 lbs
6Ethylene74-85-1650 lbs0 lbs650 lbs
7Propylene115-07-1500 lbs0 lbs500 lbs
8Chloroacetic acid79-11-8476 lbs0 lbs476 lbs
9Ethylene oxide75-21-8420 lbs0 lbs420 lbs
10Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
11Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
12Acrylic acid79-10-7186 lbs0 lbs186 lbs
13Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
14sec-Butyl alcohol78-92-293 lbs0 lbs93 lbs
15n-Butyl alcohol71-36-375 lbs0 lbs75 lbs
16Propylene oxide75-56-960 lbs0 lbs60 lbs
17Methanol67-56-133 lbs0 lbs33 lbs
18Phosgene75-44-527 lbs0 lbs27 lbs
19Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
20Ethylene glycol107-21-13 lbs0 lbs3 lbs
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