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
17820 CAROLTON WAY HOUSTON 77073
Building Size
1,985 sqft
Total structure area from HCAD building records.
Elevation
90.11 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: 80.11 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 77% 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)
569 thousand lbs
Very High
87.2x more than typical Houston property
≈ 28 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)
564 thousand lbs
Extremely High
116.9x 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)
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)568,988 lbs563,598 lbs5,391 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)260,350 lbs72,130 lbs2,993 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 77% 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):

Styrene, Toluene, Zinc (fume or dust), Methyl methacrylate, 1,2,4-Trimethylbenzene

View the full list of 25 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (25 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Styrene100-42-5479,884 lbs0 lbs479,884 lbs
2Toluene108-88-316,537 lbs0 lbs16,537 lbs
3Zinc (fume or dust)7440-66-611,331 lbs0 lbs11,331 lbs
4Methyl methacrylate80-62-610,630 lbs0 lbs10,630 lbs
51,2,4-Trimethylbenzene95-63-610,524 lbs0 lbs10,524 lbs
6Certain glycol ethersN2308,766 lbs0 lbs8,766 lbs
7m-Xylene108-38-37,654 lbs0 lbs7,654 lbs
8Methyl tert-butyl ether1634-04-45,812 lbs0 lbs5,812 lbs
9Benzene71-43-24,741 lbs0 lbs4,741 lbs
10Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,801 lbs2,801 lbs
11n-Hexane110-54-31,928 lbs0 lbs1,928 lbs
12Phenol108-95-21,654 lbs0 lbs1,654 lbs
13Xylene (mixed isomers)1330-20-71,526 lbs0 lbs1,526 lbs
14Manganese7439-96-50 lbs1,138 lbs1,138 lbs
15Naphthalene91-20-3801 lbs0 lbs801 lbs
16Dichloromethane75-09-2743 lbs0 lbs743 lbs
17Nickel7440-02-0631 lbs39 lbs670 lbs
18Zinc compoundsN9820 lbs658 lbs658 lbs
19Manganese And Manganese CompoundsN4500 lbs574 lbs574 lbs
20Chromium7440-47-3418 lbs23 lbs441 lbs
21Lead7439-92-12 lbs148 lbs149 lbs
22Ethylbenzene100-41-413 lbs0 lbs13 lbs
23Copper7440-50-80 lbs9 lbs9 lbs
24Cumene98-82-82 lbs0 lbs2 lbs
25Biphenyl92-52-42 lbs0 lbs2 lbs

Top chemicals released near this property (2024 only):

Styrene, Methyl methacrylate, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Manganese And Manganese Compounds, Lead

View the full list of 12 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (12 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Styrene100-42-567,353 lbs0 lbs178,829 lbs
2Methyl methacrylate80-62-61,631 lbs0 lbs61,963 lbs
3Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,801 lbs6,563 lbs
4Manganese And Manganese CompoundsN4500 lbs157 lbs4,425 lbs
5Lead7439-92-10 lbs11 lbs4,063 lbs
6Zinc (fume or dust)7440-66-63,144 lbs0 lbs3,144 lbs
7Ethylene glycol107-21-10 lbs0 lbs1,086 lbs
8Chromium7440-47-30 lbs7 lbs176 lbs
9Manganese7439-96-50 lbs0 lbs70 lbs
10Nickel7440-02-01 lbs1 lbs12 lbs
11Copper7440-50-80 lbs9 lbs11 lbs
12Zinc compoundsN9820 lbs7 lbs7 lbs

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