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
0 GREENSHADOW DR PASADENA 77503
Elevation
29 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
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: 19 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 86% 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)
2.78 million lbs
Extremely High
425.7x more than typical Houston property
≈ 139 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)
1.72 million lbs
Extremely High
356.8x 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)
1.06 million 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)2,777,253 lbs1,720,578 lbs1,056,675 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)304,409 lbs197,046 lbs73,507 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 86% 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):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Cumene, Propylene, Acetophenone, Methanol

View the full list of 31 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (31 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
2Cumene98-82-8517,270 lbs1 lbs517,271 lbs
3Propylene115-07-1261,006 lbs0 lbs261,006 lbs
4Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
5Methanol67-56-1183,529 lbs7,563 lbs191,092 lbs
6Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
7Benzene71-43-2160,464 lbs3 lbs160,467 lbs
8Acetaldehyde75-07-092,740 lbs3,956 lbs96,696 lbs
9Ethylene74-85-140,872 lbs0 lbs40,872 lbs
101,2,4-Trimethylbenzene95-63-614,715 lbs0 lbs14,715 lbs
11Boron trifluoride7637-07-214,388 lbs0 lbs14,388 lbs
12Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-013,465 lbs0 lbs13,465 lbs
13Phenol108-95-212,634 lbs4 lbs12,638 lbs
14n-Hexane110-54-311,558 lbs0 lbs11,558 lbs
15Ammonia7664-41-74,450 lbs2,681 lbs7,131 lbs
16Chlorine7782-50-56,383 lbs0 lbs6,383 lbs
17Zinc compoundsN9824,126 lbs0 lbs4,126 lbs
18Xylene (mixed isomers)1330-20-72,873 lbs0 lbs2,873 lbs
19Ethylene glycol107-21-11,956 lbs0 lbs1,956 lbs
20o-Cresol95-48-71,585 lbs0 lbs1,585 lbs
21Maleic anhydride108-31-61,009 lbs0 lbs1,009 lbs
22Formaldehyde50-00-0857 lbs0 lbs857 lbs
23Naphthalene91-20-3418 lbs0 lbs418 lbs
241,3-Butadiene106-99-0312 lbs0 lbs312 lbs
25Diethanolamine111-42-2205 lbs0 lbs205 lbs
26Diphenylamine122-39-4118 lbs0 lbs118 lbs
27Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
28Cyclohexane110-82-778 lbs0 lbs78 lbs
29Chromium7440-47-30 lbs33 lbs33 lbs
30Nickel7440-02-00 lbs31 lbs31 lbs
31Piperonyl butoxide51-03-64 lbs0 lbs4 lbs

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, Cumene, Ethylene, Methanol

View the full list of 28 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (28 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
2Propylene115-07-153,581 lbs0 lbs53,581 lbs
3Cumene98-82-834,951 lbs0 lbs35,055 lbs
4Ethylene74-85-131,339 lbs0 lbs31,339 lbs
5Methanol67-56-13,330 lbs336 lbs25,653 lbs
6Benzene71-43-218,400 lbs0 lbs18,401 lbs
7Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
8Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
9Ammonia7664-41-74,450 lbs0 lbs12,164 lbs
10Acetaldehyde75-07-08,300 lbs380 lbs8,680 lbs
11Phenol108-95-24,324 lbs0 lbs5,676 lbs
121,2,4-Trimethylbenzene95-63-61,900 lbs0 lbs2,420 lbs
13n-Hexane110-54-31,960 lbs0 lbs1,960 lbs
14Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
15o-Cresol95-48-788 lbs0 lbs1,122 lbs
16Formaldehyde50-00-099 lbs0 lbs978 lbs
17Xylene (mixed isomers)1330-20-7385 lbs0 lbs490 lbs
18Chlorine7782-50-5487 lbs0 lbs487 lbs
19Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0395 lbs0 lbs395 lbs
20Zinc compoundsN982323 lbs0 lbs323 lbs
211,3-Butadiene106-99-0295 lbs0 lbs295 lbs
22Maleic anhydride108-31-6132 lbs0 lbs281 lbs
23Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
24Naphthalene91-20-386 lbs0 lbs86 lbs
25Diphenylamine122-39-423 lbs0 lbs23 lbs
26Chromium7440-47-30 lbs2 lbs8 lbs
27Nickel7440-02-00 lbs2 lbs6 lbs
28Ethylene glycol107-21-11 lbs0 lbs1 lbs

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