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
10509 N H ST LA PORTE 77571
Building Size
2,400 sqft
Total structure area from HCAD building records.
Elevation
24.41 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: 14.41 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
Moderate
Higher pollution than 67% 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)
158 thousand lbs
High
24.3x more than typical Houston property
≈ 8 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)
158 thousand lbs
High
32.8x 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)
170 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)158,406 lbs158,235 lbs170 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)685,673 lbs6,514 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 67% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 30-39th percentile (higher than average pollution).

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

Certain glycol ethers, Xylene (mixed isomers), Ammonia, Ethylene glycol, Maleic anhydride

View the full list of 24 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (24 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Certain glycol ethersN23062,834 lbs0 lbs62,834 lbs
2Xylene (mixed isomers)1330-20-744,018 lbs0 lbs44,018 lbs
3Ammonia7664-41-718,061 lbs68 lbs18,129 lbs
4Ethylene glycol107-21-116,752 lbs0 lbs16,752 lbs
5Maleic anhydride108-31-65,570 lbs0 lbs5,570 lbs
6Methanol67-56-13,226 lbs0 lbs3,226 lbs
7Mercury7439-97-60 lbs0 lbs2,200 lbs
8Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
9Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
101,2,4-Trimethylbenzene95-63-6971 lbs0 lbs971 lbs
11Toluene108-88-3807 lbs0 lbs807 lbs
12Ethylene oxide75-21-8791 lbs0 lbs791 lbs
13Cyclohexane110-82-7377 lbs0 lbs377 lbs
14Ethylbenzene100-41-4310 lbs0 lbs310 lbs
15Naphthalene91-20-3278 lbs0 lbs278 lbs
16Boron trifluoride7637-07-2239 lbs0 lbs239 lbs
17Formaldehyde50-00-046 lbs102 lbs148 lbs
18Cumene98-82-868 lbs0 lbs68 lbs
19Chloromethane74-87-351 lbs0 lbs51 lbs
20Chromium7440-47-345 lbs0 lbs45 lbs
21Propylene oxide75-56-914 lbs0 lbs14 lbs
22Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
23Methyl methacrylate80-62-62 lbs0 lbs2 lbs
24n-Butyl alcohol71-36-31 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Aluminum oxide (fibrous forms), Maleic anhydride, Methanol, 1,2,4-Trimethylbenzene, Xylene (mixed isomers)

View the full list of 18 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (18 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 lbs135,289 lbs
3Methanol67-56-1139 lbs0 lbs95,522 lbs
41,2,4-Trimethylbenzene95-63-674 lbs0 lbs43,988 lbs
5Xylene (mixed isomers)1330-20-71,183 lbs0 lbs14,402 lbs
6Toluene108-88-316 lbs0 lbs13,930 lbs
7Nonylphenol EthoxylatesN5350 lbs0 lbs11,809 lbs
8Naphthalene91-20-3245 lbs0 lbs4,285 lbs
9Ethylbenzene100-41-4220 lbs0 lbs2,846 lbs
10Ethylene oxide75-21-863 lbs0 lbs2,763 lbs
11Cumene98-82-84 lbs0 lbs2,713 lbs
12Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
13Ethylene glycol107-21-11 lbs0 lbs1,139 lbs
14Formaldehyde50-00-03 lbs0 lbs513 lbs
15Ammonia7664-41-72 lbs0 lbs428 lbs
16Cyclohexane110-82-724 lbs0 lbs315 lbs
17Boron trifluoride7637-07-220 lbs0 lbs20 lbs
18Propylene oxide75-56-91 lbs0 lbs1 lbs

Explore More Properties