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
3449 LA PORTE FWY PASADENA 77503
Elevation
33.17 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: 23.17 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 89% 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)
5.87 million lbs
Extremely High
899.5x more than typical Houston property
≈ 293 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)
4.8 million lbs
Extremely High
996.2x 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)
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)5,868,715 lbs4,803,820 lbs1,064,895 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)632,696 lbs520,133 lbs74,028 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 89% 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):

Ethylene, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Cumene, n-Hexane, Ethylene glycol

View the full list of 56 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (56 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,557,991 lbs0 lbs1,557,991 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
3Cumene98-82-8518,059 lbs11 lbs518,071 lbs
4n-Hexane110-54-3513,257 lbs221 lbs513,519 lbs
5Ethylene glycol107-21-1344,305 lbs0 lbs344,305 lbs
6Propylene115-07-1289,050 lbs0 lbs289,050 lbs
7Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
8Methanol67-56-1180,974 lbs7,563 lbs188,537 lbs
9Benzene71-43-2172,558 lbs27 lbs172,587 lbs
10Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
11Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0156,836 lbs0 lbs156,836 lbs
12Aluminum (fume or dust)7429-90-5132,790 lbs0 lbs132,800 lbs
13Acetaldehyde75-07-092,740 lbs3,956 lbs96,696 lbs
14Toluene108-88-393,731 lbs557 lbs94,333 lbs
15Xylene (mixed isomers)1330-20-749,965 lbs33 lbs50,007 lbs
161,2,4-Trimethylbenzene95-63-640,441 lbs105 lbs40,549 lbs
17Certain glycol ethersN23037,104 lbs0 lbs37,104 lbs
18o-Toluidine95-53-429,521 lbs51 lbs30,113 lbs
19Isobutyraldehyde78-84-228,404 lbs0 lbs28,404 lbs
20Cyclohexane110-82-723,184 lbs51 lbs23,285 lbs
21Butyraldehyde123-72-823,130 lbs0 lbs23,130 lbs
22Ammonia7664-41-720,274 lbs2,681 lbs22,956 lbs
23Zinc compoundsN98210,410 lbs6,866 lbs17,290 lbs
24Chloromethane74-87-315,422 lbs31 lbs15,478 lbs
25Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
26Chloroethane75-00-314,708 lbs41 lbs14,784 lbs
27Diaminotoluene (mixed isomers)25376-45-812,695 lbs51 lbs12,797 lbs
28Phenol108-95-212,719 lbs4 lbs12,723 lbs
29Chlorine7782-50-510,133 lbs0 lbs10,138 lbs
30Ethylbenzene100-41-47,232 lbs22 lbs7,256 lbs
31Aniline62-53-36,824 lbs25 lbs7,119 lbs
32n-Butyl alcohol71-36-34,032 lbs0 lbs4,032 lbs
33Phthalic anhydride85-44-93,545 lbs0 lbs3,545 lbs
34Biphenyl92-52-43,115 lbs15 lbs3,145 lbs
35o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
36Maleic anhydride108-31-61,686 lbs0 lbs1,686 lbs
37o-Xylene95-47-61,330 lbs0 lbs1,330 lbs
381,3-Butadiene106-99-01,064 lbs0 lbs1,064 lbs
39Manganese compoundsN4501,064 lbs0 lbs1,064 lbs
40Formaldehyde50-00-01,061 lbs0 lbs1,061 lbs
41Naphthalene91-20-31,013 lbs21 lbs1,035 lbs
42Lead compoundsN420291 lbs38 lbs330 lbs
43Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
441,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
451,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
46Diphenylamine122-39-4126 lbs0 lbs126 lbs
47Lead And Lead CompoundsN42056 lbs39 lbs96 lbs
48Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
49Chromium7440-47-30 lbs33 lbs33 lbs
50Nickel7440-02-00 lbs31 lbs31 lbs
51Lead7439-92-11 lbs13 lbs14 lbs
52Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
53Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
54Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
55Hydrogen sulfide7783-06-41 lbs0 lbs1 lbs
56Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 45 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (45 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1159,132 lbs0 lbs159,132 lbs
2Ethylene glycol107-21-1111,462 lbs0 lbs111,462 lbs
3Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
4Propylene115-07-157,757 lbs0 lbs57,757 lbs
5Cumene98-82-835,001 lbs0 lbs35,140 lbs
6Methanol67-56-13,330 lbs336 lbs25,653 lbs
7n-Hexane110-54-320,460 lbs5 lbs20,476 lbs
8Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-020,007 lbs0 lbs20,007 lbs
9Benzene71-43-219,530 lbs2 lbs19,533 lbs
10Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
11Aluminum (fume or dust)7429-90-513,724 lbs0 lbs13,724 lbs
12Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
13Zinc compoundsN982678 lbs476 lbs9,871 lbs
14Acetaldehyde75-07-08,300 lbs380 lbs8,680 lbs
15Phenol108-95-24,324 lbs0 lbs5,676 lbs
16Toluene108-88-33,102 lbs3 lbs4,948 lbs
171,2,4-Trimethylbenzene95-63-64,078 lbs0 lbs4,777 lbs
18Isobutyraldehyde78-84-24,431 lbs0 lbs4,431 lbs
19o-Toluidine95-53-44,008 lbs5 lbs4,018 lbs
20Xylene (mixed isomers)1330-20-73,767 lbs5 lbs3,912 lbs
21Butyraldehyde123-72-82,507 lbs0 lbs2,507 lbs
22Cyclohexane110-82-72,312 lbs5 lbs2,322 lbs
23Chloroethane75-00-32,102 lbs5 lbs2,107 lbs
24Chloromethane74-87-31,938 lbs5 lbs1,943 lbs
25Diaminotoluene (mixed isomers)25376-45-81,821 lbs5 lbs1,831 lbs
26Ammonia7664-41-71,819 lbs0 lbs1,819 lbs
27Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
28o-Cresol95-48-788 lbs0 lbs1,122 lbs
29Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
30Formaldehyde50-00-099 lbs0 lbs978 lbs
31n-Butyl alcohol71-36-3638 lbs0 lbs638 lbs
32Chlorine7782-50-5497 lbs0 lbs497 lbs
33Ethylbenzene100-41-4427 lbs3 lbs430 lbs
34Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
351,3-Butadiene106-99-0295 lbs0 lbs295 lbs
36Maleic anhydride108-31-6132 lbs0 lbs281 lbs
37Naphthalene91-20-3132 lbs1 lbs133 lbs
38Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
39Lead And Lead CompoundsN4208 lbs1 lbs70 lbs
40Diphenylamine122-39-423 lbs0 lbs23 lbs
41Chromium7440-47-30 lbs2 lbs8 lbs
42Nickel7440-02-00 lbs2 lbs6 lbs
431,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
44Certain glycol ethersN2301 lbs0 lbs1 lbs
45Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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