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
622 SHAWNEE ST HOUSTON 77034
Building Size
1,705 sqft
Total structure area from HCAD building records.
Elevation
31.3 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: 21.3 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 68% 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)
177 thousand lbs
High
27.1x more than typical Houston property
≈ 9 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)
177 thousand lbs
High
36.6x 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)
343 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)176,971 lbs176,628 lbs343 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)67,655 lbs6,111 lbs5 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 68% 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):

Toluene, n-Hexane, Xylene (mixed isomers), N-Methyl-2-pyrrolidone, Cyclohexane

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)
1Toluene108-88-379,067 lbs0 lbs79,067 lbs
2n-Hexane110-54-322,091 lbs0 lbs22,091 lbs
3Xylene (mixed isomers)1330-20-718,800 lbs0 lbs18,806 lbs
4N-Methyl-2-pyrrolidone872-50-417,750 lbs0 lbs17,750 lbs
5Cyclohexane110-82-714,355 lbs0 lbs14,355 lbs
6Methanol67-56-14,436 lbs0 lbs4,436 lbs
7Nitric acid7697-37-24,015 lbs0 lbs4,015 lbs
8Copper7440-50-82,452 lbs0 lbs2,452 lbs
9Nickel7440-02-02,057 lbs0 lbs2,057 lbs
10Certain glycol ethersN2301,924 lbs0 lbs1,924 lbs
11Nickel compoundsN4951,754 lbs156 lbs1,910 lbs
12Chromium7440-47-31,793 lbs0 lbs1,793 lbs
13Nickel And Nickel CompoundsN4951,505 lbs13 lbs1,518 lbs
14Ethylbenzene100-41-41,396 lbs0 lbs1,396 lbs
15n-Butyl alcohol71-36-31,280 lbs0 lbs1,280 lbs
16Methyl isobutyl ketone108-10-11,015 lbs0 lbs1,015 lbs
171,2,4-Trimethylbenzene95-63-6521 lbs0 lbs521 lbs
18Ethylene glycol107-21-1209 lbs0 lbs209 lbs
19Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs173 lbs173 lbs
20Polycyclic aromatic compoundsN59084 lbs0 lbs162 lbs
21Manganese7439-96-562 lbs0 lbs62 lbs
22Styrene100-42-537 lbs0 lbs37 lbs
23NonylphenolN53015 lbs0 lbs15 lbs
24Lead7439-92-16 lbs0 lbs6 lbs
25Nonylphenol EthoxylatesN5353 lbs0 lbs3 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 19 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (19 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Certain glycol ethersN230163 lbs0 lbs13,196 lbs
2Toluene108-88-31,901 lbs0 lbs10,503 lbs
3Xylene (mixed isomers)1330-20-7594 lbs0 lbs9,275 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
9Nickel And Nickel CompoundsN495500 lbs5 lbs2,858 lbs
10Styrene100-42-515 lbs0 lbs1,825 lbs
111,2,4-Trimethylbenzene95-63-613 lbs0 lbs1,738 lbs
12Nitric acid7697-37-2500 lbs0 lbs1,183 lbs
13Nickel7440-02-022 lbs0 lbs788 lbs
14Chromium7440-47-314 lbs0 lbs432 lbs
15Manganese7439-96-57 lbs0 lbs97 lbs
16Lead7439-92-11 lbs0 lbs23 lbs
17Polycyclic aromatic compoundsN5906 lbs0 lbs18 lbs
18Nonylphenol EthoxylatesN5350 lbs0 lbs5 lbs
19Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1 lbs1 lbs

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