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
1802 BROADWAY LA PORTE 77571
Building Size
1,930 sqft
Total structure area from HCAD building records.
Elevation
12.46 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: 2.46 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 82% 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)
1.24 million lbs
Extremely High
190.3x more than typical Houston property
≈ 62 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)
1.24 million lbs
Extremely High
257.3x 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)
479 lbs
High
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)1,241,372 lbs1,240,893 lbs479 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,424,533 lbs105,945 lbs5 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 82% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile (top 15% most polluted).

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

Methanol, Ethylene, Vinyl acetate, Ammonia, Hydroquinone

View the full list of 48 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (48 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1356,535 lbs55 lbs356,590 lbs
2Ethylene74-85-1346,604 lbs0 lbs346,604 lbs
3Vinyl acetate108-05-4139,491 lbs0 lbs139,491 lbs
4Ammonia7664-41-787,668 lbs0 lbs87,668 lbs
5Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
6Propylene115-07-136,801 lbs0 lbs36,801 lbs
7Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
8Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-035,668 lbs0 lbs35,668 lbs
9Cumene98-82-831,096 lbs0 lbs31,096 lbs
10Propylene oxide75-56-916,752 lbs0 lbs16,752 lbs
11n-Hexane110-54-315,857 lbs0 lbs15,857 lbs
12Acetaldehyde75-07-014,843 lbs0 lbs14,843 lbs
13Chlorine7782-50-512,676 lbs0 lbs12,676 lbs
14Benzene71-43-210,536 lbs0 lbs10,536 lbs
15Styrene100-42-58,897 lbs0 lbs8,897 lbs
16Xylene (mixed isomers)1330-20-75,625 lbs0 lbs5,625 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
32Nitric acid7697-37-21,405 lbs0 lbs1,405 lbs
33tert-Butyl alcohol75-65-01,254 lbs0 lbs1,254 lbs
34n-Butyl alcohol71-36-31,211 lbs0 lbs1,211 lbs
35Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
36Diphenylamine122-39-4997 lbs0 lbs997 lbs
37Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
38N,N-Dimethylformamide68-12-2535 lbs0 lbs535 lbs
39Ethylene glycol107-21-1527 lbs0 lbs527 lbs
40Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs370 lbs370 lbs
41Dichloromethane75-09-2251 lbs0 lbs251 lbs
42Zinc compoundsN98235 lbs33 lbs68 lbs
43Cyclohexane110-82-741 lbs0 lbs41 lbs
44Antimony compoundsN01020 lbs15 lbs35 lbs
45Phthalic anhydride85-44-913 lbs0 lbs13 lbs
46Antimony And Antimony CompoundsN0105 lbs5 lbs10 lbs
47Butyl acrylate141-32-25 lbs0 lbs5 lbs
48Nickel compoundsN4950 lbs1 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Allyl alcohol, Vinyl acetate, Toluene, Xylene (mixed isomers)

View the full list of 37 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (37 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-125,095 lbs5 lbs786,486 lbs
2Allyl alcohol107-18-696 lbs0 lbs233,588 lbs
3Vinyl acetate108-05-414,116 lbs0 lbs128,626 lbs
4Toluene108-88-3196 lbs0 lbs75,795 lbs
5Xylene (mixed isomers)1330-20-788 lbs0 lbs25,339 lbs
6Ethylene74-85-124,713 lbs0 lbs24,713 lbs
7Acetaldehyde75-07-0496 lbs0 lbs23,127 lbs
8Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
9n-Hexane110-54-3361 lbs0 lbs15,774 lbs
10Styrene100-42-5272 lbs0 lbs15,702 lbs
11tert-Butyl alcohol75-65-026 lbs0 lbs15,456 lbs
12Propylene115-07-110,035 lbs0 lbs10,035 lbs
13Ammonia7664-41-77,795 lbs0 lbs8,021 lbs
14Dicyclopentadiene77-73-697 lbs0 lbs7,551 lbs
15Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,374 lbs0 lbs6,374 lbs
16Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
17Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
18Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
19sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
20n-Butyl alcohol71-36-385 lbs0 lbs2,624 lbs
21Cumene98-82-82,611 lbs0 lbs2,611 lbs
22Benzene71-43-21,090 lbs0 lbs1,090 lbs
23Chlorine7782-50-5961 lbs0 lbs961 lbs
24Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs551 lbs
25Propylene oxide75-56-9430 lbs0 lbs430 lbs
26Ethylene oxide75-21-8420 lbs0 lbs420 lbs
27Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
28Nitric acid7697-37-2217 lbs0 lbs217 lbs
29Acrylic acid79-10-7186 lbs0 lbs192 lbs
30Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
31Diphenylamine122-39-4103 lbs0 lbs103 lbs
321,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
33Cyclohexane110-82-741 lbs0 lbs41 lbs
34Antimony And Antimony CompoundsN0100 lbs0 lbs33 lbs
35Phosgene75-44-527 lbs0 lbs27 lbs
36Ethylene glycol107-21-115 lbs0 lbs21 lbs
37Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs

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