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
102 S Y ST LA PORTE 77571
Building Size
1,710 sqft
Total structure area from HCAD building records.
Elevation
12.7 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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: 2.7 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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • 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 81% 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)
1.09 million lbs
Extremely High
167.5x more than typical Houston property
≈ 55 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)
1.09 million lbs
Extremely High
226.5x 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)
479 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)1,092,826 lbs1,092,348 lbs479 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,184,754 lbs88,144 lbs5 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 81% 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):

Ethylene, Ammonia, Methanol, Vinyl acetate, Cyclohexane

View the full list of 35 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (35 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-1323,747 lbs0 lbs323,747 lbs
2Ammonia7664-41-7204,698 lbs0 lbs204,698 lbs
3Methanol67-56-1195,521 lbs55 lbs195,576 lbs
4Vinyl acetate108-05-4117,185 lbs0 lbs117,185 lbs
5Cyclohexane110-82-7102,641 lbs0 lbs102,641 lbs
6Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-035,668 lbs0 lbs35,668 lbs
7n-Hexane110-54-317,593 lbs0 lbs17,593 lbs
8Propylene oxide75-56-916,381 lbs0 lbs16,381 lbs
9Isoprene78-79-515,828 lbs0 lbs15,828 lbs
10Chlorine7782-50-512,676 lbs0 lbs12,676 lbs
111,3-Butadiene106-99-012,674 lbs0 lbs12,674 lbs
12Xylene (mixed isomers)1330-20-75,625 lbs0 lbs5,625 lbs
13Styrene100-42-55,569 lbs0 lbs5,569 lbs
14Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
15Toluene108-88-33,039 lbs0 lbs3,039 lbs
16Acetaldehyde75-07-02,587 lbs0 lbs2,587 lbs
171,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
18Phosgene75-44-51,958 lbs0 lbs1,958 lbs
19Allyl alcohol107-18-61,820 lbs0 lbs1,820 lbs
20Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
21Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
22sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
23Nitric acid7697-37-21,405 lbs0 lbs1,405 lbs
24tert-Butyl alcohol75-65-01,254 lbs0 lbs1,254 lbs
25n-Butyl alcohol71-36-31,211 lbs0 lbs1,211 lbs
26Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
27Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
28Ethylene glycol107-21-1513 lbs0 lbs513 lbs
29Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs370 lbs370 lbs
30Zinc compoundsN98235 lbs33 lbs68 lbs
31Antimony compoundsN01020 lbs15 lbs35 lbs
32N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
33Phthalic anhydride85-44-913 lbs0 lbs13 lbs
34Antimony And Antimony CompoundsN0105 lbs5 lbs10 lbs
35Nickel compoundsN4950 lbs1 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Allyl alcohol, Vinyl acetate, Toluene, Nickel compounds

View the full list of 30 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (30 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-114,181 lbs5 lbs452,861 lbs
2Allyl alcohol107-18-696 lbs0 lbs233,588 lbs
3Vinyl acetate108-05-411,698 lbs0 lbs121,509 lbs
4Toluene108-88-3196 lbs0 lbs75,795 lbs
5Nickel compoundsN4950 lbs0 lbs74,741 lbs
6Cyclohexane110-82-78,101 lbs0 lbs29,411 lbs
7Styrene100-42-5424 lbs0 lbs29,331 lbs
8Xylene (mixed isomers)1330-20-788 lbs0 lbs25,339 lbs
9Ethylene74-85-124,034 lbs0 lbs24,034 lbs
10Acetaldehyde75-07-02 lbs0 lbs21,995 lbs
11Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
12n-Hexane110-54-3521 lbs0 lbs17,769 lbs
13Ammonia7664-41-716,568 lbs0 lbs16,568 lbs
14tert-Butyl alcohol75-65-026 lbs0 lbs15,456 lbs
15Dicyclopentadiene77-73-697 lbs0 lbs7,551 lbs
16Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,374 lbs0 lbs6,374 lbs
17sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
18n-Butyl alcohol71-36-385 lbs0 lbs2,624 lbs
19Isoprene78-79-52,125 lbs0 lbs2,125 lbs
201,3-Butadiene106-99-01,187 lbs0 lbs1,187 lbs
21Chlorine7782-50-5961 lbs0 lbs961 lbs
22Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs551 lbs
23Propylene oxide75-56-9370 lbs0 lbs370 lbs
24Nitric acid7697-37-2217 lbs0 lbs217 lbs
25Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
261,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
27Antimony And Antimony CompoundsN0100 lbs0 lbs33 lbs
28Phosgene75-44-527 lbs0 lbs27 lbs
29Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
30Ethylene glycol107-21-112 lbs0 lbs12 lbs

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