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
502 W SOUTHMORE AVE PASADENA 77502
Elevation
24.32 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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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: 14.32 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 85% 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)
2.58 million lbs
Extremely High
394.7x more than typical Houston property
≈ 129 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)
2.57 million lbs
Extremely High
533.6x 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)
2 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)2,575,305 lbs2,573,124 lbs2,181 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)314,510 lbs218,416 lbs38 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 85% 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):

Hydrogen cyanide, n-Hexane, Xylene (mixed isomers), Hydrogen sulfide, Propylene

View the full list of 30 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (30 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Hydrogen cyanide74-90-8818,552 lbs0 lbs818,552 lbs
2n-Hexane110-54-3382,903 lbs0 lbs382,910 lbs
3Xylene (mixed isomers)1330-20-7228,979 lbs627 lbs229,636 lbs
4Hydrogen sulfide7783-06-4206,443 lbs0 lbs206,443 lbs
5Propylene115-07-1193,971 lbs0 lbs193,971 lbs
6Benzene71-43-2188,730 lbs94 lbs188,835 lbs
7Toluene108-88-3168,438 lbs175 lbs168,637 lbs
8Ethylene74-85-1127,617 lbs0 lbs127,617 lbs
9Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
10Cyclohexane110-82-752,501 lbs0 lbs52,510 lbs
11Ammonia7664-41-735,600 lbs0 lbs35,600 lbs
12Ethylbenzene100-41-427,944 lbs4 lbs27,956 lbs
131,3-Butadiene106-99-016,921 lbs0 lbs16,921 lbs
14Ethylene glycol107-21-15,255 lbs0 lbs5,264 lbs
15Naphthalene91-20-34,616 lbs3 lbs4,627 lbs
161,2,4-Trimethylbenzene95-63-63,713 lbs0 lbs3,727 lbs
17Polycyclic aromatic compoundsN5902,862 lbs115 lbs3,179 lbs
18Methanol67-56-12,293 lbs0 lbs2,293 lbs
19Cumene98-82-81,656 lbs0 lbs1,658 lbs
20Styrene100-42-51,198 lbs0 lbs1,198 lbs
21Phenol108-95-20 lbs1,155 lbs1,155 lbs
22Biphenyl92-52-4345 lbs0 lbs364 lbs
23Nickel7440-02-0120 lbs0 lbs120 lbs
24Certain glycol ethersN23080 lbs0 lbs80 lbs
25Mercury7439-97-677 lbs0 lbs77 lbs
26Manganese7439-96-570 lbs0 lbs70 lbs
27C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
28Chromium7440-47-340 lbs0 lbs40 lbs
29Benzo[g,h,i]perylene191-24-20 lbs7 lbs7 lbs
30Lead compoundsN4201 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Diethanolamine, Hydrogen cyanide, n-Hexane, Xylene (mixed isomers), Toluene

View the full list of 30 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (30 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Diethanolamine111-42-210,092 lbs0 lbs85,621 lbs
2Hydrogen cyanide74-90-873,728 lbs0 lbs73,728 lbs
3n-Hexane110-54-334,482 lbs0 lbs34,482 lbs
4Xylene (mixed isomers)1330-20-726,770 lbs10 lbs26,786 lbs
5Toluene108-88-315,998 lbs0 lbs16,019 lbs
6Benzene71-43-214,621 lbs0 lbs14,640 lbs
7Hydrogen sulfide7783-06-413,422 lbs0 lbs13,422 lbs
8Ammonia7664-41-71,783 lbs0 lbs10,057 lbs
9Propylene115-07-19,425 lbs0 lbs9,425 lbs
10Ethylene74-85-18,875 lbs0 lbs8,875 lbs
11Ethylene glycol107-21-1500 lbs0 lbs7,519 lbs
12Cyclohexane110-82-74,048 lbs0 lbs4,048 lbs
13Phenol108-95-20 lbs8 lbs2,825 lbs
14Ethylbenzene100-41-42,721 lbs0 lbs2,722 lbs
15Certain glycol ethersN23010 lbs0 lbs1,121 lbs
16Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
17Naphthalene91-20-3761 lbs0 lbs822 lbs
18Polycyclic aromatic compoundsN590353 lbs15 lbs368 lbs
191,2,4-Trimethylbenzene95-63-6305 lbs0 lbs308 lbs
20Cumene98-82-8293 lbs0 lbs293 lbs
21Lead compoundsN4200 lbs0 lbs269 lbs
22Styrene100-42-5110 lbs0 lbs110 lbs
23Biphenyl92-52-433 lbs0 lbs33 lbs
24Manganese7439-96-530 lbs0 lbs30 lbs
25Chromium7440-47-325 lbs0 lbs25 lbs
26Nickel7440-02-024 lbs0 lbs24 lbs
27Lead7439-92-10 lbs0 lbs8 lbs
28Mercury7439-97-67 lbs0 lbs7 lbs
29Benzo[g,h,i]perylene191-24-20 lbs5 lbs5 lbs
30Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs

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