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
425 N SHADY LN LA PORTE 77571
Building Size
3,224 sqft
Total structure area from HCAD building records.
Elevation
9.05 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
High
Property flooded at 0.9ft depth. Risk based on flood depth at structure.

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
High
Flood Depth
0.95 ft ±0.5 ft
Depth of water above ground 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
Based on HCAD building value of $232,849 (3,224 sqft). Using U.S. Army Corps of Engineers depth-damage curves.
Depth-Damage Estimate (Neighborhood Comparison)
$0
No neighborhood valuation estimate available. Building exists (3,224 sqft) but no comparable neighborhood data found.
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 Flooded
Flood Depth: 0.95 feet
Severity: Minor

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.
  • Simulation shows flooding at current water level - review property drainage and consider mitigation.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 81% 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)
1.19 million lbs
Extremely High
181.8x more than typical Houston property
≈ 59 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)
1.19 million lbs
Extremely High
246.0x 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)
141 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)1,186,408 lbs1,186,267 lbs141 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)422,055 lbs88,407 lbs46 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 81% 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):

Ammonia, Acrylic acid, Benzene, Methanol, Cyclohexane

View the full list of 45 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (45 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ammonia7664-41-7265,454 lbs0 lbs265,454 lbs
2Acrylic acid79-10-7247,770 lbs0 lbs247,770 lbs
3Benzene71-43-2115,467 lbs0 lbs115,467 lbs
4Methanol67-56-1109,770 lbs0 lbs109,770 lbs
5Cyclohexane110-82-7102,600 lbs0 lbs102,600 lbs
6Propylene oxide75-56-978,945 lbs0 lbs78,945 lbs
7Ethylbenzene100-41-466,674 lbs0 lbs66,674 lbs
8Styrene100-42-551,437 lbs0 lbs51,437 lbs
9Certain glycol ethersN23034,372 lbs0 lbs34,372 lbs
10Isoprene78-79-515,828 lbs0 lbs15,828 lbs
11Propylene115-07-115,687 lbs0 lbs15,687 lbs
12Ethylene74-85-115,437 lbs0 lbs15,437 lbs
131,3-Butadiene106-99-014,544 lbs0 lbs14,544 lbs
14Toluene108-88-38,514 lbs0 lbs8,514 lbs
15Formaldehyde50-00-07,593 lbs0 lbs7,593 lbs
16Trade SecretTRD SECRT5,905 lbs88 lbs5,993 lbs
171,2,4-Trimethylbenzene95-63-64,474 lbs0 lbs4,474 lbs
18Butyl acrylate141-32-24,451 lbs0 lbs4,451 lbs
19Vinyl acetate108-05-43,230 lbs0 lbs3,230 lbs
20Xylene (mixed isomers)1330-20-72,663 lbs0 lbs2,663 lbs
211,4-Dioxane123-91-12,644 lbs0 lbs2,644 lbs
22Formic acid64-18-62,017 lbs0 lbs2,017 lbs
23Acrylonitrile107-13-11,977 lbs0 lbs1,977 lbs
24NonylphenolN5301,974 lbs0 lbs1,974 lbs
25n-Hexane110-54-31,735 lbs0 lbs1,735 lbs
26Naphthalene91-20-31,572 lbs0 lbs1,572 lbs
27Nonylphenol EthoxylatesN535773 lbs0 lbs773 lbs
28Ethylene glycol107-21-1605 lbs0 lbs605 lbs
29Maleic anhydride108-31-6534 lbs0 lbs534 lbs
30Acrolein107-02-8402 lbs0 lbs402 lbs
31Hydroquinone123-31-9355 lbs0 lbs355 lbs
32Benzyl chloride100-44-7228 lbs0 lbs228 lbs
33Ethylene oxide75-21-8169 lbs0 lbs169 lbs
34Diethanolamine111-42-2106 lbs0 lbs106 lbs
35Diethyl sulfate64-67-585 lbs0 lbs85 lbs
36Zinc compoundsN98248 lbs33 lbs81 lbs
37n-Butyl alcohol71-36-368 lbs0 lbs68 lbs
38Epichlorohydrin106-89-842 lbs0 lbs42 lbs
39Antimony compoundsN01020 lbs15 lbs35 lbs
40Acetonitrile75-05-833 lbs0 lbs33 lbs
41Bis(2-chloroethyl) ether111-44-426 lbs0 lbs26 lbs
422,4-Dimethylphenol105-67-917 lbs0 lbs17 lbs
43Cumene98-82-815 lbs0 lbs15 lbs
44Antimony And Antimony CompoundsN0105 lbs5 lbs10 lbs
451,3-Phenylenediamine108-45-22 lbs0 lbs2 lbs

Top chemicals released near this property (2024 only):

Acrylic acid, Nickel compounds, Methanol, Xylene (mixed isomers), Cyclohexane

View the full list of 33 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (33 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Acrylic acid79-10-720,841 lbs0 lbs124,064 lbs
2Nickel compoundsN4950 lbs0 lbs74,741 lbs
3Methanol67-56-11,225 lbs0 lbs46,469 lbs
4Xylene (mixed isomers)1330-20-7363 lbs0 lbs39,094 lbs
5Cyclohexane110-82-78,060 lbs0 lbs29,370 lbs
6Ammonia7664-41-723,068 lbs0 lbs23,164 lbs
7Styrene100-42-53,598 lbs0 lbs17,737 lbs
8Ethylbenzene100-41-44,042 lbs0 lbs15,706 lbs
9Benzene71-43-28,393 lbs0 lbs8,949 lbs
10Propylene oxide75-56-97,544 lbs0 lbs7,547 lbs
11Toluene108-88-3587 lbs0 lbs4,245 lbs
12Acetonitrile75-05-824 lbs0 lbs4,091 lbs
13Naphthalene91-20-3223 lbs0 lbs3,764 lbs
14Ethylene glycol107-21-191 lbs0 lbs2,920 lbs
15NonylphenolN530551 lbs0 lbs2,678 lbs
16Isoprene78-79-52,125 lbs0 lbs2,125 lbs
17Certain glycol ethersN230421 lbs0 lbs2,084 lbs
18Propylene115-07-12,003 lbs0 lbs2,003 lbs
191,2,4-Trimethylbenzene95-63-6599 lbs0 lbs1,996 lbs
20n-Hexane110-54-3160 lbs0 lbs1,995 lbs
21Formic acid64-18-6175 lbs0 lbs1,197 lbs
221,3-Butadiene106-99-01,187 lbs0 lbs1,187 lbs
23Acrylonitrile107-13-1879 lbs0 lbs1,029 lbs
24Formaldehyde50-00-0296 lbs0 lbs936 lbs
25Butyl acrylate141-32-2848 lbs0 lbs848 lbs
26Ethylene74-85-1741 lbs0 lbs741 lbs
27Trade SecretTRD SECRT0 lbs46 lbs581 lbs
28Benzyl chloride100-44-7119 lbs0 lbs379 lbs
29Hydroquinone123-31-923 lbs0 lbs185 lbs
301,4-Dioxane123-91-1126 lbs0 lbs126 lbs
31Ethylene oxide75-21-842 lbs0 lbs42 lbs
32Acrolein107-02-828 lbs0 lbs38 lbs
33Maleic anhydride108-31-626 lbs0 lbs26 lbs

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