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
4611 E O S T DR HOUSTON 77013
Building Size
1,240 sqft
Total structure area from HCAD building records.
Elevation
40.97 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: 30.97 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 73% 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)
329 thousand lbs
Very High
50.4x more than typical Houston property
≈ 16 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)
326 thousand lbs
Very High
67.6x 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)
3 thousand lbs
Very 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)328,760 lbs325,970 lbs2,790 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)917,307 lbs51,802 lbs994 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 73% 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):

Ammonia, Zinc compounds, Styrene, Xylene (mixed isomers), Methanol

View the full list of 22 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (22 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ammonia7664-41-7307,674 lbs0 lbs307,674 lbs
2Zinc compoundsN9823,941 lbs2,071 lbs6,012 lbs
3Styrene100-42-55,373 lbs0 lbs5,373 lbs
4Xylene (mixed isomers)1330-20-73,210 lbs0 lbs3,210 lbs
5Methanol67-56-12,781 lbs0 lbs2,781 lbs
6Phenol108-95-21,390 lbs0 lbs1,390 lbs
7Ethylbenzene100-41-4700 lbs0 lbs700 lbs
8Manganese7439-96-5166 lbs334 lbs501 lbs
9Naphthalene91-20-3229 lbs0 lbs229 lbs
10Manganese compoundsN45018 lbs208 lbs226 lbs
11Chromium compounds (except for chromite ore mined in the Transvaal Region)N090141 lbs15 lbs156 lbs
121,2,4-Trimethylbenzene95-63-6125 lbs0 lbs125 lbs
13DiisocyanatesN120101 lbs4 lbs105 lbs
14Aluminum oxide (fibrous forms)1344-28-11 lbs98 lbs99 lbs
15Nickel7440-02-03 lbs38 lbs41 lbs
16Lead compoundsN42040 lbs0 lbs40 lbs
17Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09032 lbs1 lbs33 lbs
18Lead7439-92-15 lbs21 lbs26 lbs
19Aluminum (fume or dust)7429-90-524 lbs0 lbs24 lbs
20Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51115 lbs0 lbs15 lbs
21Molybdenum trioxide1313-27-51 lbs0 lbs1 lbs
22Dioxin and dioxin-like compoundsN1501 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Zinc compounds, Ammonia, Manganese, Styrene, Nickel

View the full list of 8 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (8 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Zinc compoundsN982132 lbs762 lbs839,932 lbs
2Ammonia7664-41-749,429 lbs0 lbs52,907 lbs
3Manganese7439-96-50 lbs41 lbs19,987 lbs
4Styrene100-42-52,239 lbs0 lbs2,239 lbs
5Nickel7440-02-00 lbs31 lbs2,080 lbs
6Manganese compoundsN4502 lbs116 lbs118 lbs
7Aluminum oxide (fibrous forms)1344-28-10 lbs42 lbs42 lbs
8Lead7439-92-10 lbs3 lbs3 lbs

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