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
3118 FONDREN ST LA PORTE 77571
Building Size
3,636 sqft
Total structure area from HCAD building records.
Elevation
11.42 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: 1.42 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 83% 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)
1.61 million lbs
Extremely High
246.2x more than typical Houston property
≈ 80 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)
1.61 million lbs
Extremely High
332.9x 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)
566 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)1,606,104 lbs1,605,538 lbs566 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)909,206 lbs119,477 lbs51 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 83% 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):

Ethylene, Methanol, Acrylic acid, Ammonia, Vinyl acetate

View the full list of 30 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (30 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-1339,184 lbs0 lbs339,184 lbs
2Methanol67-56-1265,526 lbs55 lbs265,581 lbs
3Acrylic acid79-10-7247,770 lbs0 lbs247,770 lbs
4Ammonia7664-41-7222,396 lbs0 lbs222,396 lbs
5Vinyl acetate108-05-4117,185 lbs0 lbs117,185 lbs
6Benzene71-43-2115,467 lbs0 lbs115,467 lbs
7Cyclohexane110-82-7102,600 lbs0 lbs102,600 lbs
8Ethylbenzene100-41-465,946 lbs0 lbs65,946 lbs
9Styrene100-42-551,437 lbs0 lbs51,437 lbs
10Isoprene78-79-515,828 lbs0 lbs15,828 lbs
11Propylene115-07-115,687 lbs0 lbs15,687 lbs
121,3-Butadiene106-99-014,544 lbs0 lbs14,544 lbs
13Toluene108-88-38,313 lbs0 lbs8,313 lbs
14Trade SecretTRD SECRT5,905 lbs88 lbs5,993 lbs
15Acetaldehyde75-07-02,587 lbs0 lbs2,587 lbs
16Formaldehyde50-00-02,450 lbs0 lbs2,450 lbs
17Chlorine7782-50-52,246 lbs0 lbs2,246 lbs
18Formic acid64-18-61,996 lbs0 lbs1,996 lbs
19Acrylonitrile107-13-11,977 lbs0 lbs1,977 lbs
20Butyl acrylate141-32-21,939 lbs0 lbs1,939 lbs
21n-Hexane110-54-31,735 lbs0 lbs1,735 lbs
22Nitric acid7697-37-21,405 lbs0 lbs1,405 lbs
23Maleic anhydride108-31-6534 lbs0 lbs534 lbs
24Acrolein107-02-8402 lbs0 lbs402 lbs
25Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs370 lbs370 lbs
26Hydroquinone123-31-9355 lbs0 lbs355 lbs
27Zinc compoundsN98235 lbs33 lbs68 lbs
28Xylene (mixed isomers)1330-20-765 lbs0 lbs65 lbs
29Antimony compoundsN01020 lbs15 lbs35 lbs
30Antimony And Antimony CompoundsN0105 lbs5 lbs10 lbs

Top chemicals released near this property (2024 only):

Methanol, Acrylic acid, Vinyl acetate, Nickel compounds, Cyclohexane

View the full list of 27 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (27 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-113,247 lbs5 lbs450,079 lbs
2Acrylic acid79-10-720,841 lbs0 lbs124,064 lbs
3Vinyl acetate108-05-411,698 lbs0 lbs121,509 lbs
4Nickel compoundsN4950 lbs0 lbs74,741 lbs
5Cyclohexane110-82-78,060 lbs0 lbs29,370 lbs
6Ethylene74-85-124,775 lbs0 lbs24,775 lbs
7Acetaldehyde75-07-02 lbs0 lbs21,995 lbs
8Styrene100-42-53,598 lbs0 lbs17,737 lbs
9Ammonia7664-41-716,568 lbs0 lbs16,568 lbs
10Benzene71-43-28,393 lbs0 lbs8,949 lbs
11Ethylbenzene100-41-43,948 lbs0 lbs5,723 lbs
12Isoprene78-79-52,125 lbs0 lbs2,125 lbs
13Propylene115-07-12,003 lbs0 lbs2,003 lbs
14n-Hexane110-54-3160 lbs0 lbs1,995 lbs
15Formic acid64-18-6175 lbs0 lbs1,197 lbs
161,3-Butadiene106-99-01,187 lbs0 lbs1,187 lbs
17Acrylonitrile107-13-1879 lbs0 lbs1,029 lbs
18Toluene108-88-3525 lbs0 lbs957 lbs
19Butyl acrylate141-32-2848 lbs0 lbs848 lbs
20Formaldehyde50-00-0151 lbs0 lbs672 lbs
21Trade SecretTRD SECRT0 lbs46 lbs581 lbs
22Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs551 lbs
23Nitric acid7697-37-2217 lbs0 lbs217 lbs
24Hydroquinone123-31-923 lbs0 lbs185 lbs
25Ethylene glycol107-21-10 lbs0 lbs85 lbs
26Acrolein107-02-828 lbs0 lbs38 lbs
27Maleic anhydride108-31-626 lbs0 lbs26 lbs

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