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
11012 N L ST LA PORTE 77571
Building Size
2,639 sqft
Total structure area from HCAD building records.
Elevation
22.23 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: 12.23 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 84% 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)
1.68 million lbs
Extremely High
258.0x more than typical Houston property
≈ 84 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)
1.45 million lbs
Extremely High
301.4x 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)
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)1,683,130 lbs1,453,662 lbs229,468 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,789,260 lbs77,829 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 84% 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):

Methanol, Ethylene, Ammonia, Vinyl acetate, Certain glycol ethers

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)
1Methanol67-56-1701,697 lbs228,708 lbs930,405 lbs
2Ethylene74-85-1314,095 lbs0 lbs314,095 lbs
3Ammonia7664-41-7107,001 lbs0 lbs107,001 lbs
4Vinyl acetate108-05-4102,664 lbs0 lbs102,664 lbs
5Certain glycol ethersN23062,831 lbs0 lbs62,831 lbs
6Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
7Formaldehyde50-00-036,646 lbs0 lbs36,646 lbs
8Propylene115-07-132,044 lbs0 lbs32,044 lbs
9Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
10Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
11Chlorine7782-50-58,422 lbs605 lbs9,027 lbs
12Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
13n-Hexane110-54-34,000 lbs0 lbs4,000 lbs
14Mercury7439-97-60 lbs0 lbs2,200 lbs
15Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
16Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
17Naphthalene91-20-3245 lbs0 lbs245 lbs
181,3-Butadiene106-99-0217 lbs0 lbs217 lbs
19Ethylbenzene100-41-4216 lbs0 lbs216 lbs
20Zinc compoundsN9820 lbs155 lbs155 lbs
21n-Butyl alcohol71-36-359 lbs0 lbs59 lbs
22sec-Butyl alcohol78-92-247 lbs0 lbs47 lbs
23Chromium7440-47-345 lbs0 lbs45 lbs
24Acetaldehyde75-07-010 lbs0 lbs10 lbs

Top chemicals released near this property (2024 only):

Methanol, Aluminum oxide (fibrous forms), Maleic anhydride, Ammonia, Vinyl acetate

View the full list of 16 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (16 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-144,101 lbs0 lbs1,215,316 lbs
2Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
3Maleic anhydride108-31-61,569 lbs0 lbs134,889 lbs
4Ammonia7664-41-75,791 lbs0 lbs44,183 lbs
5Vinyl acetate108-05-46,880 lbs0 lbs20,379 lbs
6Ethylene74-85-19,510 lbs0 lbs9,510 lbs
7Formaldehyde50-00-03,559 lbs0 lbs5,799 lbs
8Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
9Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
10Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
11Propylene115-07-1500 lbs0 lbs500 lbs
12Naphthalene91-20-3245 lbs0 lbs245 lbs
13Ethylbenzene100-41-4216 lbs0 lbs216 lbs
14Chlorine7782-50-5160 lbs0 lbs160 lbs
15Acetaldehyde75-07-010 lbs0 lbs15 lbs
16Ethylene glycol107-21-11 lbs0 lbs1 lbs

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