Data-driven insights for local properties

📊 Environmental Assessment Report

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.

🌊 Part 1: Flood Risk Analysis

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
932 S 4TH ST LA PORTE 77571
Building Size
2,805 sqft
Total structure area from HCAD building records.
Elevation
13.89 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
Risk based on FEMA zone and simulation.

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
Moderate
Flood Depth
0 ft ±0.5 ft
No flooding at current water level.
Water Surface Elevation (WSE)
N/A
Water surface elevation data not available.
Area Inundated
N/A
Data not available
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage Estimate (HCAD Valuation)
$0
Property not flooded at current water level. No damage to calculate.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Property not flooded at current water level. No damage to calculate.
Analysis Method
COG Bathtub 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 Safe
Safety Margin: 3.89 feet
Severity: Safe

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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • Review the interactive flood simulator to understand how different rainfall events could affect this property.
  • Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 78% of Houston homes
This ranking compares pollution levels within 2 miles of this property against 10,000 randomly sampled Houston metro properties. Lower percentiles indicate higher pollution exposure.
Industrial Pollution Nearby (Last 10 Years)
642 thousand lbs
Very High
98.4x more than typical Houston property
≈ 32 dump trucks of chemicals within 2 miles
Total chemical releases from all industrial facilities within a 2-mile radius over the past decade (2014–2024). Data from EPA's Toxic Release Inventory tracking air, water, and land discharges.
💨 Air Pollution (Last 10 Years)
642 thousand lbs
Extremely High
133.2x more than typical Houston property
Chemicals released into the air from nearby facilities over 10 years. Includes both fugitive emissions (leaks, evaporation) and stack emissions (smokestacks, vents). May affect local air quality.
💧 Water Pollution (Last 10 Years)
54 lbs
Above Typical
Most Houston properties have none nearby
Chemical discharges to surface water (bayous, streams, drainage) from industrial facilities within 2 miles over the past decade. May impact local waterways and drainage systems.

❤️ 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)642,224 lbs642,171 lbs54 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)805,986 lbs56,617 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 78% 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 25% most polluted).

Top chemicals released near this property (past 10 years):

Methanol, Ammonia, Hydroquinone, Propylene, Methyl isobutyl ketone

View the full list of 47 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (47 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1179,178 lbs0 lbs179,178 lbs
2Ammonia7664-41-7105,663 lbs0 lbs105,663 lbs
3Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
4Propylene115-07-136,801 lbs0 lbs36,801 lbs
5Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
6Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
7Cumene98-82-831,096 lbs0 lbs31,096 lbs
8Ethylene74-85-122,857 lbs0 lbs22,857 lbs
9Vinyl acetate108-05-422,306 lbs0 lbs22,306 lbs
10Propylene oxide75-56-916,752 lbs0 lbs16,752 lbs
11Xylene (mixed isomers)1330-20-716,006 lbs0 lbs16,006 lbs
12n-Hexane110-54-315,857 lbs0 lbs15,857 lbs
13Acetaldehyde75-07-012,256 lbs0 lbs12,256 lbs
14Benzene71-43-210,536 lbs0 lbs10,536 lbs
15Chlorine7782-50-510,430 lbs0 lbs10,430 lbs
16Styrene100-42-58,897 lbs0 lbs8,897 lbs
17Toluene108-88-34,300 lbs0 lbs4,300 lbs
18Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
19Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
20Chlorobenzene108-90-73,127 lbs0 lbs3,127 lbs
21Methyl methacrylate80-62-63,050 lbs0 lbs3,050 lbs
221,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
23Phosgene75-44-51,958 lbs0 lbs1,958 lbs
24Allyl alcohol107-18-61,820 lbs0 lbs1,820 lbs
25Acetonitrile75-05-81,765 lbs0 lbs1,765 lbs
26Methyl tert-butyl ether1634-04-41,591 lbs0 lbs1,591 lbs
27Triethylamine121-44-81,515 lbs0 lbs1,515 lbs
28Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
29Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
30sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
31Ethylene oxide75-21-81,431 lbs0 lbs1,431 lbs
32tert-Butyl alcohol75-65-01,254 lbs0 lbs1,254 lbs
33n-Butyl alcohol71-36-31,211 lbs0 lbs1,211 lbs
34Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
35Diphenylamine122-39-4997 lbs0 lbs997 lbs
36Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
37N,N-Dimethylformamide68-12-2535 lbs0 lbs535 lbs
38Manganese7439-96-5511 lbs0 lbs511 lbs
39Dichloromethane75-09-2251 lbs0 lbs251 lbs
40Zinc compoundsN98235 lbs33 lbs68 lbs
41Ethylene glycol107-21-154 lbs0 lbs54 lbs
42Cyclohexane110-82-741 lbs0 lbs41 lbs
43Antimony compoundsN01020 lbs15 lbs35 lbs
44Phthalic anhydride85-44-913 lbs0 lbs13 lbs
45Antimony And Antimony CompoundsN0105 lbs5 lbs10 lbs
46Butyl acrylate141-32-25 lbs0 lbs5 lbs
47Nickel compoundsN4950 lbs1 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Allyl alcohol, Toluene, Xylene (mixed isomers), Chloroacetic acid

View the full list of 34 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (34 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-110,953 lbs0 lbs335,512 lbs
2Allyl alcohol107-18-696 lbs0 lbs233,588 lbs
3Toluene108-88-3196 lbs0 lbs75,795 lbs
4Xylene (mixed isomers)1330-20-788 lbs0 lbs25,339 lbs
5Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
6n-Hexane110-54-3361 lbs0 lbs15,774 lbs
7Styrene100-42-5272 lbs0 lbs15,702 lbs
8tert-Butyl alcohol75-65-026 lbs0 lbs15,456 lbs
9Propylene115-07-110,035 lbs0 lbs10,035 lbs
10Ammonia7664-41-78,690 lbs0 lbs8,916 lbs
11Dicyclopentadiene77-73-697 lbs0 lbs7,551 lbs
12Vinyl acetate108-05-42,418 lbs0 lbs7,117 lbs
13Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
14Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
15Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
16Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
17sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
18n-Butyl alcohol71-36-385 lbs0 lbs2,624 lbs
19Cumene98-82-82,611 lbs0 lbs2,611 lbs
20Acetaldehyde75-07-0494 lbs0 lbs1,132 lbs
21Benzene71-43-21,090 lbs0 lbs1,090 lbs
22Chlorine7782-50-5961 lbs0 lbs961 lbs
23Ethylene74-85-1679 lbs0 lbs679 lbs
24Propylene oxide75-56-9430 lbs0 lbs430 lbs
25Ethylene oxide75-21-8420 lbs0 lbs420 lbs
26Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
27Acrylic acid79-10-7186 lbs0 lbs192 lbs
28Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
29Diphenylamine122-39-4103 lbs0 lbs103 lbs
301,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
31Cyclohexane110-82-741 lbs0 lbs41 lbs
32Phosgene75-44-527 lbs0 lbs27 lbs
33Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
34Ethylene glycol107-21-13 lbs0 lbs9 lbs

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