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
8811 MAIN ST HOUSTON 77025
Elevation
48.96 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: 38.96 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 71% 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)
249 thousand lbs
High
38.1x more than typical Houston property
≈ 12 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)
249 thousand lbs
Very High
51.6x 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)
114 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)248,861 lbs248,747 lbs114 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)83,147 lbs4,155 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 71% 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, Phthalic anhydride, Maleic anhydride, Ethylene glycol, Xylene (mixed isomers)

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)
1Styrene100-42-5139,804 lbs0 lbs139,804 lbs
2Phthalic anhydride85-44-966,516 lbs0 lbs66,516 lbs
3Maleic anhydride108-31-613,631 lbs0 lbs13,631 lbs
4Ethylene glycol107-21-112,943 lbs0 lbs12,943 lbs
5Xylene (mixed isomers)1330-20-75,560 lbs28 lbs5,588 lbs
6Methyl methacrylate80-62-63,015 lbs0 lbs3,015 lbs
7Toluene108-88-31,939 lbs40 lbs1,979 lbs
8n-Hexane110-54-31,770 lbs15 lbs1,785 lbs
9Ethylbenzene100-41-41,659 lbs8 lbs1,667 lbs
10Ammonia7664-41-7777 lbs0 lbs777 lbs
11Benzene71-43-2615 lbs5 lbs620 lbs
121,2,4-Trimethylbenzene95-63-6228 lbs11 lbs239 lbs
13Formic acid64-18-6160 lbs0 lbs160 lbs
14Zinc compoundsN98230 lbs0 lbs30 lbs
15Methanol67-56-130 lbs0 lbs30 lbs
16Nitric acid7697-37-230 lbs0 lbs30 lbs
17Naphthalene91-20-315 lbs0 lbs15 lbs
18Vanadium compoundsN77010 lbs0 lbs10 lbs
19Chlorine7782-50-510 lbs0 lbs10 lbs
20Lead compoundsN4200 lbs7 lbs7 lbs
214,4'-Isopropylidenediphenol80-05-76 lbs0 lbs6 lbs

Top chemicals released near this property (2024 only):

Xylene (mixed isomers), Ethylene glycol, Ethylbenzene, Styrene, Toluene

View the full list of 9 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (9 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Xylene (mixed isomers)1330-20-716 lbs0 lbs33,775 lbs
2Ethylene glycol107-21-17 lbs0 lbs32,304 lbs
3Ethylbenzene100-41-43 lbs0 lbs7,925 lbs
4Styrene100-42-52,610 lbs0 lbs4,072 lbs
5Toluene108-88-30 lbs0 lbs3,230 lbs
6Phthalic anhydride85-44-91,461 lbs0 lbs1,622 lbs
7Maleic anhydride108-31-631 lbs0 lbs192 lbs
8Formic acid64-18-623 lbs0 lbs23 lbs
94,4'-Isopropylidenediphenol80-05-76 lbs0 lbs6 lbs

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