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
518 N 2ND ST LA PORTE 77571
Building Size
2,404 sqft
Total structure area from HCAD building records.
Elevation
17.34 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: 7.34 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 79% 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)
737 thousand lbs
Extremely High
113.0x more than typical Houston property
≈ 37 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)
737 thousand lbs
Extremely High
152.9x 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)
94 lbs
Above Typical
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)737,477 lbs737,383 lbs94 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)432,400 lbs49,513 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 79% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile (top 25% most polluted).

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

Methanol, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Formaldehyde, n-Butyl alcohol, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 29 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (29 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1292,178 lbs0 lbs292,178 lbs
2Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9216,585 lbs0 lbs216,585 lbs
3Formaldehyde50-00-063,808 lbs0 lbs63,808 lbs
4n-Butyl alcohol71-36-349,206 lbs0 lbs49,206 lbs
5Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
6Copper compoundsN1001 lbs84 lbs29,084 lbs
7Hydrogen fluoride7664-39-317,939 lbs0 lbs17,939 lbs
8Propylene115-07-113,154 lbs0 lbs13,154 lbs
9Chlorine7782-50-511,230 lbs0 lbs11,230 lbs
10Xylene (mixed isomers)1330-20-710,381 lbs0 lbs10,381 lbs
11Ethylene74-85-17,000 lbs0 lbs7,000 lbs
12Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
13Chlorobenzene108-90-73,127 lbs0 lbs3,127 lbs
14Phosgene75-44-51,958 lbs0 lbs1,958 lbs
15Acetonitrile75-05-81,765 lbs0 lbs1,765 lbs
16Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
17Methyl tert-butyl ether1634-04-41,591 lbs0 lbs1,591 lbs
18Triethylamine121-44-81,515 lbs0 lbs1,515 lbs
19Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
20Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
21sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
22Toluene108-88-31,261 lbs0 lbs1,261 lbs
23N,N-Dimethylformamide68-12-2535 lbs0 lbs535 lbs
24Manganese7439-96-5511 lbs0 lbs511 lbs
25Dichloromethane75-09-2251 lbs0 lbs251 lbs
26Chromium7440-47-345 lbs0 lbs45 lbs
27Nickel compoundsN4954 lbs3 lbs8 lbs
28Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
29Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs

Top chemicals released near this property (2024 only):

Aluminum oxide (fibrous forms), Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Chloroacetic acid, Methanol, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 15 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (15 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
2Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-929,545 lbs0 lbs29,545 lbs
3Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
4Methanol67-56-15,090 lbs0 lbs6,952 lbs
5Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
6Formaldehyde50-00-03,559 lbs0 lbs5,799 lbs
7sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
8n-Butyl alcohol71-36-375 lbs0 lbs2,529 lbs
9Hydrogen fluoride7664-39-31,738 lbs0 lbs1,738 lbs
10Chlorine7782-50-51,121 lbs0 lbs1,121 lbs
11Ethylene74-85-1650 lbs0 lbs650 lbs
12Propylene115-07-1500 lbs0 lbs500 lbs
13Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
14Phosgene75-44-527 lbs0 lbs27 lbs
15Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs

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