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
5539 TRIWAY LN HOUSTON 77041
Elevation
97.57 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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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: 87.57 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 64% 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)
108 thousand lbs
High
16.5x more than typical Houston property
≈ 5 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)
103 thousand lbs
High
21.3x 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)
5 thousand lbs
Very 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)107,664 lbs102,638 lbs5,026 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)173,617 lbs2,218 lbs504 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 64% 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):

Vinyl acetate, Zinc compounds, Nitric acid, Ammonia, Phenol

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)
1Vinyl acetate108-05-462,144 lbs0 lbs62,144 lbs
2Zinc compoundsN98213,254 lbs4,862 lbs18,116 lbs
3Nitric acid7697-37-28,299 lbs0 lbs8,299 lbs
4Ammonia7664-41-76,249 lbs0 lbs6,249 lbs
5Phenol108-95-25,162 lbs0 lbs5,162 lbs
6Propylene115-07-11,765 lbs0 lbs1,765 lbs
7Antimony compoundsN0101,359 lbs0 lbs1,359 lbs
8Manganese7439-96-51,113 lbs85 lbs1,197 lbs
9Chromium7440-47-3745 lbs9 lbs753 lbs
10DiisocyanatesN120688 lbs0 lbs688 lbs
11Ethylene glycol107-21-1520 lbs0 lbs520 lbs
12Nickel7440-02-0396 lbs36 lbs432 lbs
13Copper7440-50-8319 lbs10 lbs329 lbs
144,4'-Isopropylidenediphenol80-05-7286 lbs5 lbs291 lbs
15Formic acid64-18-6255 lbs0 lbs255 lbs
16Triglycidyl isocyanurate2451-62-943 lbs5 lbs48 lbs
17Lead compoundsN42027 lbs14 lbs41 lbs
18Antimony And Antimony CompoundsN01010 lbs0 lbs10 lbs
19Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs4 lbs
20Lead And Lead CompoundsN4202 lbs1 lbs3 lbs
21Lead7439-92-11 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Zinc compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Vinyl acetate, Lead compounds, Triglycidyl isocyanurate

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)
1Zinc compoundsN982297 lbs493 lbs122,885 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs42,194 lbs
3Vinyl acetate108-05-4819 lbs0 lbs2,008 lbs
4Lead compoundsN4201 lbs0 lbs1,495 lbs
5Triglycidyl isocyanurate2451-62-912 lbs5 lbs1,229 lbs
6Antimony compoundsN0100 lbs0 lbs1,189 lbs
7Nitric acid7697-37-2754 lbs0 lbs754 lbs
8Chromium7440-47-330 lbs0 lbs555 lbs
9Nickel7440-02-016 lbs0 lbs355 lbs
10Copper7440-50-811 lbs0 lbs345 lbs
11Ammonia7664-41-7250 lbs0 lbs250 lbs
12Manganese7439-96-520 lbs0 lbs206 lbs
134,4'-Isopropylidenediphenol80-05-71 lbs5 lbs144 lbs
14DiisocyanatesN1207 lbs0 lbs7 lbs
15Lead And Lead CompoundsN4200 lbs1 lbs1 lbs

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