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
10815 N L ST LA PORTE 77571
Building Size
3,924 sqft
Total structure area from HCAD building records.
Elevation
23.46 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
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: 13.46 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.

  • 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 85% 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)
2.24 million lbs
Extremely High
343.1x more than typical Houston property
≈ 112 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)
2.01 million lbs
Extremely High
416.5x 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)
229 thousand lbs
Extremely 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)2,238,161 lbs2,008,693 lbs229,468 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)670,124 lbs145,652 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 85% 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, Methanol, n-Hexane, Ethylene, Ammonia

View the full list of 21 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (21 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Propylene115-07-1919,027 lbs0 lbs919,027 lbs
2Methanol67-56-1244,523 lbs228,708 lbs473,231 lbs
3n-Hexane110-54-3336,892 lbs0 lbs336,892 lbs
4Ethylene74-85-1263,645 lbs0 lbs263,645 lbs
5Ammonia7664-41-789,901 lbs0 lbs89,901 lbs
6Certain glycol ethersN23062,831 lbs0 lbs62,831 lbs
7Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
8Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
9Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
10Chlorine7782-50-57,622 lbs605 lbs8,227 lbs
11Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
12Mercury7439-97-60 lbs0 lbs2,200 lbs
13Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
14Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
15Naphthalene91-20-3245 lbs0 lbs245 lbs
161,3-Butadiene106-99-0217 lbs0 lbs217 lbs
17Ethylbenzene100-41-4216 lbs0 lbs216 lbs
18Zinc compoundsN9820 lbs155 lbs155 lbs
19n-Butyl alcohol71-36-359 lbs0 lbs59 lbs
20sec-Butyl alcohol78-92-247 lbs0 lbs47 lbs
21Chromium7440-47-345 lbs0 lbs45 lbs

Top chemicals released near this property (2024 only):

Aluminum oxide (fibrous forms), Maleic anhydride, Propylene, Ammonia, Ethylene

View the full list of 12 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (12 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
2Maleic anhydride108-31-61,569 lbs0 lbs134,889 lbs
3Propylene115-07-183,354 lbs0 lbs83,354 lbs
4Ammonia7664-41-75,791 lbs0 lbs44,183 lbs
5Ethylene74-85-126,855 lbs0 lbs26,855 lbs
6n-Hexane110-54-322,335 lbs0 lbs22,335 lbs
7Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
8Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
9Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
10Naphthalene91-20-3245 lbs0 lbs245 lbs
11Ethylbenzene100-41-4216 lbs0 lbs216 lbs
12Ethylene glycol107-21-11 lbs0 lbs1 lbs

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