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
8911 FREY RD HOUSTON 77034
Elevation
36.76 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: 26.76 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 62% 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)
72 thousand lbs
High
11.0x more than typical Houston property
≈ 4 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)
72 thousand lbs
High
14.9x 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)
0 lbs
None
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)72,031 lbs72,031 lbs0 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)62,097 lbs3,606 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 62% 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):

Xylene (mixed isomers), Toluene, Cyclohexane, n-Hexane, Methanol

View the full list of 19 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (19 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Xylene (mixed isomers)1330-20-718,800 lbs0 lbs18,806 lbs
2Toluene108-88-315,578 lbs0 lbs15,578 lbs
3Cyclohexane110-82-714,355 lbs0 lbs14,355 lbs
4n-Hexane110-54-36,091 lbs0 lbs6,091 lbs
5Methanol67-56-14,436 lbs0 lbs4,436 lbs
6Copper7440-50-82,452 lbs0 lbs2,452 lbs
7Nickel7440-02-02,057 lbs0 lbs2,057 lbs
8Certain glycol ethersN2301,924 lbs0 lbs1,924 lbs
9Chromium7440-47-31,793 lbs0 lbs1,793 lbs
10Ethylbenzene100-41-41,396 lbs0 lbs1,396 lbs
11n-Butyl alcohol71-36-31,280 lbs0 lbs1,280 lbs
12Methyl isobutyl ketone108-10-11,015 lbs0 lbs1,015 lbs
131,2,4-Trimethylbenzene95-63-6521 lbs0 lbs521 lbs
14Ethylene glycol107-21-1209 lbs0 lbs209 lbs
15Manganese7439-96-562 lbs0 lbs62 lbs
16Styrene100-42-537 lbs0 lbs37 lbs
17NonylphenolN53015 lbs0 lbs15 lbs
18Lead7439-92-16 lbs0 lbs6 lbs
19Nonylphenol EthoxylatesN5353 lbs0 lbs3 lbs

Top chemicals released near this property (2024 only):

Certain glycol ethers, Xylene (mixed isomers), Toluene, Cyclohexane, n-Hexane

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)
1Certain glycol ethersN230163 lbs0 lbs13,196 lbs
2Xylene (mixed isomers)1330-20-7594 lbs0 lbs9,275 lbs
3Toluene108-88-3401 lbs0 lbs9,003 lbs
4Cyclohexane110-82-71,469 lbs0 lbs5,782 lbs
5n-Hexane110-54-3482 lbs0 lbs5,653 lbs
6Copper7440-50-8264 lbs0 lbs5,330 lbs
7Ethylbenzene100-41-4135 lbs0 lbs4,518 lbs
8n-Butyl alcohol71-36-326 lbs0 lbs4,433 lbs
9Styrene100-42-515 lbs0 lbs1,825 lbs
101,2,4-Trimethylbenzene95-63-613 lbs0 lbs1,738 lbs
11Nickel7440-02-022 lbs0 lbs788 lbs
12Chromium7440-47-314 lbs0 lbs432 lbs
13Manganese7439-96-57 lbs0 lbs97 lbs
14Lead7439-92-11 lbs0 lbs23 lbs
15Nonylphenol EthoxylatesN5350 lbs0 lbs5 lbs

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