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
1809 CHAZEN DR HOUSTON 77029
Building Size
2,586 sqft
Total structure area from HCAD building records.
Elevation
26.02 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: 16.02 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 80% 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)
861 thousand lbs
Extremely High
132.0x more than typical Houston property
≈ 43 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)
861 thousand lbs
Extremely High
178.5x 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)
146 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)861,155 lbs861,010 lbs146 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)90,576 lbs70,623 lbs37 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 80% 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):

1,3-Butadiene, Ethylene, n-Butyl alcohol, n-Hexane, Ammonia

View the full list of 29 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (29 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
11,3-Butadiene106-99-0203,018 lbs0 lbs203,018 lbs
2Ethylene74-85-1165,454 lbs0 lbs165,454 lbs
3n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
4n-Hexane110-54-3114,506 lbs9 lbs114,586 lbs
5Ammonia7664-41-764,815 lbs0 lbs64,815 lbs
6Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
7Xylene (mixed isomers)1330-20-722,730 lbs18 lbs22,819 lbs
8Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
9Toluene108-88-320,683 lbs17 lbs20,787 lbs
10Benzene71-43-218,905 lbs9 lbs18,932 lbs
11Cyclohexane110-82-714,660 lbs0 lbs14,660 lbs
12Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
13Isoprene78-79-513,272 lbs0 lbs13,272 lbs
14Methanol67-56-15,617 lbs0 lbs5,617 lbs
15Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
16Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-03,066 lbs0 lbs3,066 lbs
171,2,4-Trimethylbenzene95-63-62,808 lbs0 lbs3,023 lbs
18Ethylbenzene100-41-41,283 lbs16 lbs1,336 lbs
19Nickel7440-02-0376 lbs1 lbs376 lbs
20Lead7439-92-1229 lbs1 lbs230 lbs
21Cumene98-82-8169 lbs0 lbs174 lbs
22Naphthalene91-20-3134 lbs0 lbs139 lbs
23Propylene115-07-1126 lbs0 lbs126 lbs
24Zinc compoundsN9820 lbs65 lbs65 lbs
25Anthracene120-12-731 lbs0 lbs31 lbs
26Polycyclic aromatic compoundsN59023 lbs0 lbs23 lbs
27Mercury7439-97-612 lbs0 lbs12 lbs
28Lead compoundsN4202 lbs5 lbs7 lbs
29Lead And Lead CompoundsN4200 lbs5 lbs5 lbs

Top chemicals released near this property (2024 only):

1,3-Butadiene, Zinc compounds, Ethylene, Ammonia, n-Hexane

View the full list of 18 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (18 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
11,3-Butadiene106-99-032,375 lbs0 lbs32,375 lbs
2Zinc compoundsN9820 lbs5 lbs18,755 lbs
3Ethylene74-85-114,466 lbs0 lbs14,466 lbs
4Ammonia7664-41-76,881 lbs0 lbs6,881 lbs
5n-Hexane110-54-36,435 lbs0 lbs6,506 lbs
6Xylene (mixed isomers)1330-20-73,231 lbs8 lbs3,311 lbs
7Toluene108-88-32,355 lbs8 lbs2,451 lbs
8Isoprene78-79-52,371 lbs0 lbs2,371 lbs
9Benzene71-43-21,538 lbs2 lbs1,561 lbs
10Lead And Lead CompoundsN4200 lbs5 lbs788 lbs
11Cyclohexane110-82-7294 lbs0 lbs294 lbs
12Lead7439-92-1228 lbs1 lbs234 lbs
131,2,4-Trimethylbenzene95-63-6114 lbs0 lbs185 lbs
14Ethylbenzene100-41-4125 lbs8 lbs170 lbs
15Nickel7440-02-090 lbs0 lbs98 lbs
16Propylene115-07-183 lbs0 lbs83 lbs
17Cumene98-82-825 lbs0 lbs30 lbs
18Naphthalene91-20-311 lbs0 lbs17 lbs

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