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
9801 L ST N LA PORTE 77571
Elevation
25.69 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very Low
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
Very Low
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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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: 15.69 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.

  • FEMA Zone X (minimal hazard) - flood insurance available at preferred rates.
  • 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)
1.62 million lbs
Extremely High
248.7x more than typical Houston property
≈ 81 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)
1.62 million lbs
Extremely High
336.4x 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)
0 lbs
None
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)1,622,404 lbs1,622,404 lbs0 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)276,273 lbs138,864 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 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):

Propylene, n-Hexane, Ethylene, Certain glycol ethers, Xylene (mixed isomers)

View the full list of 12 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (12 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Propylene115-07-1891,483 lbs0 lbs891,483 lbs
2n-Hexane110-54-3332,892 lbs0 lbs332,892 lbs
3Ethylene74-85-1262,325 lbs0 lbs262,325 lbs
4Certain glycol ethersN23062,831 lbs0 lbs62,831 lbs
5Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
6Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
7Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
8Zinc compoundsN9824,689 lbs0 lbs4,689 lbs
9Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
10Naphthalene91-20-3245 lbs0 lbs245 lbs
11Boron trifluoride7637-07-2239 lbs0 lbs239 lbs
12Ethylbenzene100-41-4216 lbs0 lbs216 lbs

Top chemicals released near this property (2024 only):

Maleic anhydride, Propylene, Ethylene, n-Hexane, Polycyclic aromatic compounds

View the full list of 13 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (13 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Maleic anhydride108-31-61,569 lbs0 lbs134,889 lbs
2Propylene115-07-183,354 lbs0 lbs83,354 lbs
3Ethylene74-85-126,855 lbs0 lbs26,855 lbs
4n-Hexane110-54-322,335 lbs0 lbs22,335 lbs
5Polycyclic aromatic compoundsN5900 lbs0 lbs3,621 lbs
6Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
7Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
8Zinc compoundsN982425 lbs0 lbs855 lbs
9Naphthalene91-20-3245 lbs0 lbs245 lbs
10Ethylbenzene100-41-4216 lbs0 lbs216 lbs
11Benzo[g,h,i]perylene191-24-20 lbs0 lbs38 lbs
12Boron trifluoride7637-07-220 lbs0 lbs20 lbs
13Ethylene glycol107-21-11 lbs0 lbs1 lbs

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