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
12637 POWELL LN HOUSTON 77015
Building Size
2,489 sqft
Total structure area from HCAD building records.
Elevation
24.61 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: 14.61 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 83% 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)
1.59 million lbs
Extremely High
243.8x more than typical Houston property
≈ 80 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)
1.55 million lbs
Extremely High
322.2x 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)
37 thousand lbs
Extremely 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)1,590,385 lbs1,553,770 lbs36,615 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)185,615 lbs149,882 lbs443 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 83% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile (top 15% most polluted).

Top chemicals released near this property (past 10 years):

Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), 1,3-Butadiene, Ethylene, n-Hexane

View the full list of 39 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (39 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ammonia7664-41-7650,803 lbs33,581 lbs684,384 lbs
2Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9278,278 lbs0 lbs278,278 lbs
31,3-Butadiene106-99-0203,018 lbs0 lbs203,018 lbs
4Ethylene74-85-1165,454 lbs0 lbs165,454 lbs
5n-Hexane110-54-364,257 lbs9 lbs64,337 lbs
6Styrene100-42-559,223 lbs0 lbs59,223 lbs
7Xylene (mixed isomers)1330-20-728,097 lbs18 lbs28,186 lbs
8Toluene108-88-322,615 lbs17 lbs23,295 lbs
9Cyclohexane110-82-716,388 lbs0 lbs16,388 lbs
10Isoprene78-79-513,272 lbs0 lbs13,272 lbs
11Methanol67-56-112,158 lbs0 lbs12,158 lbs
12Ethylbenzene100-41-411,814 lbs16 lbs11,867 lbs
13Benzene71-43-210,336 lbs9 lbs10,363 lbs
141,2,4-Trimethylbenzene95-63-63,593 lbs0 lbs3,664 lbs
15Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-03,066 lbs0 lbs3,066 lbs
16Manganese7439-96-51,668 lbs543 lbs2,211 lbs
17Chromium7440-47-31,182 lbs925 lbs2,106 lbs
18Nickel7440-02-01,350 lbs544 lbs1,894 lbs
19Chlorine7782-50-51,417 lbs0 lbs1,417 lbs
20Manganese compoundsN450990 lbs262 lbs1,252 lbs
21Formic acid64-18-61,012 lbs0 lbs1,012 lbs
22Certain glycol ethersN230903 lbs0 lbs903 lbs
23Chromium compounds (except for chromite ore mined in the Transvaal Region)N090410 lbs417 lbs828 lbs
24Nickel compoundsN495443 lbs250 lbs694 lbs
25Ethylene glycol107-21-1398 lbs0 lbs398 lbs
26Aluminum (fume or dust)7429-90-5250 lbs0 lbs250 lbs
27Copper7440-50-8250 lbs0 lbs250 lbs
28Cobalt7440-48-4250 lbs0 lbs250 lbs
29Phthalic anhydride85-44-9184 lbs0 lbs184 lbs
30Cumene98-82-8169 lbs0 lbs174 lbs
31Naphthalene91-20-3163 lbs0 lbs168 lbs
32Maleic anhydride108-31-6139 lbs0 lbs139 lbs
33Propylene115-07-1126 lbs0 lbs126 lbs
34Anthracene120-12-731 lbs0 lbs31 lbs
35Nitric acid7697-37-228 lbs0 lbs28 lbs
36Polycyclic aromatic compoundsN59023 lbs0 lbs23 lbs
37Lead compoundsN4202 lbs11 lbs14 lbs
38Lead And Lead CompoundsN4200 lbs12 lbs12 lbs
39Nonylphenol EthoxylatesN53510 lbs0 lbs10 lbs

Top chemicals released near this property (2024 only):

Ammonia, 1,3-Butadiene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ethylene, Vanadium compounds

View the full list of 25 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (25 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-774,863 lbs93 lbs101,614 lbs
21,3-Butadiene106-99-032,375 lbs0 lbs32,375 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,245 lbs0 lbs17,245 lbs
4Ethylene74-85-114,466 lbs0 lbs14,466 lbs
5Vanadium compoundsN7700 lbs0 lbs6,689 lbs
6n-Hexane110-54-33,420 lbs0 lbs3,491 lbs
7Isoprene78-79-52,371 lbs0 lbs2,371 lbs
8Toluene108-88-3834 lbs8 lbs1,505 lbs
9Methanol67-56-11,343 lbs0 lbs1,343 lbs
10Cyclohexane110-82-71,053 lbs0 lbs1,053 lbs
11Lead And Lead CompoundsN4200 lbs5 lbs788 lbs
12Benzene71-43-2545 lbs2 lbs568 lbs
13Xylene (mixed isomers)1330-20-7280 lbs8 lbs360 lbs
14Manganese7439-96-5162 lbs86 lbs248 lbs
15Chromium7440-47-371 lbs144 lbs215 lbs
16Certain glycol ethersN230214 lbs0 lbs214 lbs
17Nickel7440-02-0108 lbs86 lbs202 lbs
181,2,4-Trimethylbenzene95-63-6114 lbs0 lbs185 lbs
19Formic acid64-18-6173 lbs0 lbs173 lbs
20Ethylbenzene100-41-4125 lbs8 lbs170 lbs
21Lead compoundsN4200 lbs3 lbs164 lbs
22Propylene115-07-183 lbs0 lbs83 lbs
23Mercury compoundsN4580 lbs0 lbs46 lbs
24Cumene98-82-825 lbs0 lbs30 lbs
25Naphthalene91-20-311 lbs0 lbs17 lbs

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