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
7206 WILLIAMS ST HOUSTON 77040
Building Size
1,708 sqft
Total structure area from HCAD building records.
Elevation
83.31 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
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: 73.31 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
Moderate
Higher pollution than 61% 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)
68 thousand lbs
High
10.4x more than typical Houston property
≈ 3 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)
67 thousand lbs
High
13.9x 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)
845 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)68,072 lbs67,227 lbs845 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)47,378 lbs3,702 lbs121 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 61% 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), n-Butyl alcohol, Ethylbenzene, Certain glycol ethers, 1,2,4-Trimethylbenzene

View the full list of 23 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (23 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Xylene (mixed isomers)1330-20-743,183 lbs6 lbs43,189 lbs
2n-Butyl alcohol71-36-37,103 lbs0 lbs7,103 lbs
3Ethylbenzene100-41-45,493 lbs0 lbs5,493 lbs
4Certain glycol ethersN2304,211 lbs0 lbs4,211 lbs
51,2,4-Trimethylbenzene95-63-62,851 lbs0 lbs2,851 lbs
6Copper compoundsN1001,033 lbs104 lbs1,137 lbs
7Methyl isobutyl ketone108-10-1960 lbs0 lbs960 lbs
8Zinc compoundsN982454 lbs405 lbs860 lbs
9Methanol67-56-1596 lbs0 lbs596 lbs
10Zinc (fume or dust)7440-66-6439 lbs0 lbs439 lbs
11Cumene98-82-8254 lbs0 lbs254 lbs
12Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N04022 lbs98 lbs232 lbs
13Chromium7440-47-395 lbs132 lbs227 lbs
14Nickel7440-02-0141 lbs83 lbs224 lbs
15Copper And Copper CompoundsN100175 lbs3 lbs178 lbs
16Toluene108-88-3122 lbs0 lbs122 lbs
17Manganese7439-96-560 lbs10 lbs70 lbs
18Lead compoundsN42022 lbs3 lbs30 lbs
194,4'-Isopropylidenediphenol80-05-76 lbs0 lbs6 lbs
20Mercury compoundsN4584 lbs0 lbs4 lbs
21Copper7440-50-82 lbs0 lbs2 lbs
22Lead7439-92-10 lbs1 lbs1 lbs
23Cobalt compoundsN0961 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Copper compounds, Zinc compounds, Xylene (mixed isomers), Ethylbenzene, n-Butyl alcohol

View the full list of 16 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (16 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Copper compoundsN100352 lbs0 lbs40,652 lbs
2Zinc compoundsN9827 lbs74 lbs3,263 lbs
3Xylene (mixed isomers)1330-20-72,115 lbs0 lbs2,115 lbs
4Ethylbenzene100-41-4386 lbs0 lbs386 lbs
5n-Butyl alcohol71-36-3385 lbs0 lbs385 lbs
6Certain glycol ethersN230178 lbs0 lbs178 lbs
7Nickel7440-02-083 lbs12 lbs100 lbs
8Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0406 lbs6 lbs72 lbs
9Manganese7439-96-560 lbs10 lbs69 lbs
10Methanol67-56-166 lbs0 lbs66 lbs
11Chromium7440-47-320 lbs18 lbs43 lbs
12Methyl isobutyl ketone108-10-125 lbs0 lbs25 lbs
131,2,4-Trimethylbenzene95-63-614 lbs0 lbs14 lbs
14Lead compoundsN4204 lbs0 lbs8 lbs
15Copper7440-50-82 lbs0 lbs2 lbs
16Lead7439-92-10 lbs1 lbs1 lbs

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