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
3701 DARLING AVE PASADENA 77503
Building Size
1,514 sqft
Total structure area from HCAD building records.
Elevation
26.39 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: 16.39 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 87% 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)
3.48 million lbs
Extremely High
533.6x more than typical Houston property
≈ 174 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)
2.42 million lbs
Extremely High
502.7x 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)
1.06 million 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)3,481,359 lbs2,424,221 lbs1,057,138 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)371,448 lbs254,250 lbs73,522 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 87% 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):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Cumene, Methanol, Propylene, Acetophenone

View the full list of 52 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (52 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
2Cumene98-82-8518,059 lbs11 lbs518,071 lbs
3Methanol67-56-1447,598 lbs7,563 lbs455,161 lbs
4Propylene115-07-1288,871 lbs0 lbs288,871 lbs
5Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
6Benzene71-43-2171,685 lbs27 lbs171,714 lbs
7Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
8Ammonia7664-41-7113,823 lbs2,681 lbs116,504 lbs
9Acetaldehyde75-07-098,856 lbs3,956 lbs102,812 lbs
10Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
11Xylene (mixed isomers)1330-20-748,626 lbs33 lbs48,668 lbs
12Ethylene74-85-140,872 lbs0 lbs40,872 lbs
131,2,4-Trimethylbenzene95-63-640,441 lbs105 lbs40,549 lbs
14Toluene108-88-332,691 lbs27 lbs32,727 lbs
15n-Hexane110-54-330,503 lbs170 lbs30,674 lbs
16Isobutyraldehyde78-84-228,404 lbs0 lbs28,404 lbs
17Butyraldehyde123-72-823,130 lbs0 lbs23,130 lbs
18Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
19Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-013,680 lbs0 lbs13,680 lbs
20Phenol108-95-213,534 lbs4 lbs13,538 lbs
21Ethylbenzene100-41-46,973 lbs22 lbs6,997 lbs
22Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
23Chlorine7782-50-56,477 lbs0 lbs6,477 lbs
24Zinc compoundsN9825,277 lbs0 lbs5,277 lbs
25n-Butyl alcohol71-36-34,032 lbs0 lbs4,032 lbs
26Phthalic anhydride85-44-93,545 lbs0 lbs3,545 lbs
27Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
28Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
29Ethylene glycol107-21-12,118 lbs0 lbs2,118 lbs
30o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
31Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
32Maleic anhydride108-31-61,686 lbs0 lbs1,686 lbs
33Formic acid64-18-61,406 lbs0 lbs1,406 lbs
34o-Xylene95-47-61,330 lbs0 lbs1,330 lbs
35Cyclohexane110-82-71,073 lbs0 lbs1,073 lbs
36Manganese compoundsN4501,064 lbs0 lbs1,064 lbs
37Naphthalene91-20-31,012 lbs21 lbs1,034 lbs
381,3-Butadiene106-99-0938 lbs0 lbs938 lbs
39Lead compoundsN420288 lbs22 lbs309 lbs
40Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
411,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
421,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
43Diphenylamine122-39-4126 lbs0 lbs126 lbs
44Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
45Lead And Lead CompoundsN42055 lbs22 lbs78 lbs
46Chromium7440-47-30 lbs33 lbs33 lbs
47Nickel7440-02-00 lbs31 lbs31 lbs
48Certain glycol ethersN23012 lbs0 lbs12 lbs
49Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
50Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
51Piperonyl butoxide51-03-64 lbs0 lbs4 lbs
52Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, Methanol, Cumene, Ethylene

View the full list of 43 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (43 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
2Propylene115-07-157,757 lbs0 lbs57,757 lbs
3Methanol67-56-119,060 lbs336 lbs46,187 lbs
4Cumene98-82-835,001 lbs0 lbs35,140 lbs
5Ethylene74-85-131,339 lbs0 lbs31,339 lbs
6Ammonia7664-41-712,947 lbs0 lbs21,415 lbs
7Benzene71-43-219,530 lbs2 lbs19,533 lbs
8Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
9Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
10Acetaldehyde75-07-08,345 lbs380 lbs8,725 lbs
11Phenol108-95-24,579 lbs0 lbs5,952 lbs
12Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
131,2,4-Trimethylbenzene95-63-64,078 lbs0 lbs4,777 lbs
14Isobutyraldehyde78-84-24,431 lbs0 lbs4,431 lbs
15n-Hexane110-54-34,280 lbs0 lbs4,280 lbs
16Xylene (mixed isomers)1330-20-73,736 lbs5 lbs3,880 lbs
17Formaldehyde50-00-0354 lbs0 lbs3,326 lbs
18Toluene108-88-32,900 lbs3 lbs2,903 lbs
19Butyraldehyde123-72-82,507 lbs0 lbs2,507 lbs
20Formic acid64-18-6189 lbs0 lbs1,968 lbs
21Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
22o-Cresol95-48-788 lbs0 lbs1,122 lbs
23Dimethylamine124-40-3864 lbs0 lbs884 lbs
24n-Butyl alcohol71-36-3638 lbs0 lbs638 lbs
25Ethylene glycol107-21-1588 lbs0 lbs608 lbs
26Chlorine7782-50-5487 lbs0 lbs487 lbs
27Ethylbenzene100-41-4427 lbs3 lbs430 lbs
28Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0395 lbs0 lbs395 lbs
29Zinc compoundsN982323 lbs0 lbs323 lbs
301,3-Butadiene106-99-0295 lbs0 lbs295 lbs
31Acrylonitrile107-13-1278 lbs0 lbs294 lbs
32Maleic anhydride108-31-6132 lbs0 lbs281 lbs
33Propylene oxide75-56-9255 lbs0 lbs255 lbs
34Cyclohexane110-82-7232 lbs0 lbs232 lbs
35Naphthalene91-20-3132 lbs1 lbs133 lbs
36Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
37Lead And Lead CompoundsN4208 lbs1 lbs70 lbs
38Diphenylamine122-39-423 lbs0 lbs23 lbs
39Chromium7440-47-30 lbs2 lbs8 lbs
40Nickel7440-02-00 lbs2 lbs6 lbs
411,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
42Certain glycol ethersN2301 lbs0 lbs1 lbs
43Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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