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
11806 PORT RD SEABROOK 77586
Elevation
8.22 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
High
Property flooded at 1.8ft depth. Risk based on flood depth at structure.

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
High
Flood Depth
1.78 ft ±0.5 ft
Depth of water above ground 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 Flooded
Flood Depth: 1.78 feet
Severity: Minor

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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • 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.
  • Simulation shows flooding at current water level - review property drainage and consider mitigation.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 88% 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)
4.59 million lbs
Extremely High
703.5x more than typical Houston property
≈ 229 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)
4.59 million lbs
Extremely High
951.6x 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)
788 lbs
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)4,589,878 lbs4,589,089 lbs788 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,166,753 lbs402,024 lbs81 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 88% 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):

tert-Butyl alcohol, Propylene, Ethylene, Methanol, Toluene

View the full list of 76 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (76 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1tert-Butyl alcohol75-65-0750,524 lbs0 lbs750,524 lbs
2Propylene115-07-1577,750 lbs0 lbs577,750 lbs
3Ethylene74-85-1502,426 lbs0 lbs502,426 lbs
4Methanol67-56-1489,309 lbs55 lbs489,364 lbs
5Toluene108-88-3303,864 lbs0 lbs303,864 lbs
6Propylene oxide75-56-9293,670 lbs0 lbs293,670 lbs
7Ammonia7664-41-7265,454 lbs0 lbs265,454 lbs
8Acrylic acid79-10-7248,318 lbs0 lbs248,318 lbs
9n-Hexane110-54-3190,045 lbs0 lbs190,045 lbs
10Benzene71-43-2129,270 lbs0 lbs129,270 lbs
11Vinyl acetate108-05-4120,415 lbs0 lbs120,415 lbs
12Titanium tetrachloride7550-45-0108,195 lbs0 lbs108,195 lbs
131,3-Butadiene106-99-0105,073 lbs0 lbs105,073 lbs
14Cyclohexane110-82-7102,600 lbs0 lbs102,600 lbs
15Ethylbenzene100-41-466,752 lbs0 lbs66,752 lbs
16Styrene100-42-551,523 lbs0 lbs51,523 lbs
17Isoprene78-79-547,793 lbs0 lbs47,793 lbs
18Ethylene glycol107-21-138,362 lbs0 lbs38,362 lbs
19Certain glycol ethersN23034,372 lbs0 lbs34,372 lbs
20Molybdenum trioxide1313-27-526,754 lbs0 lbs26,754 lbs
21Dicyclopentadiene77-73-620,009 lbs0 lbs20,009 lbs
22Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-015,293 lbs0 lbs15,293 lbs
23Xylene (mixed isomers)1330-20-714,870 lbs0 lbs14,870 lbs
24Epichlorohydrin106-89-88,484 lbs0 lbs8,484 lbs
25Formaldehyde50-00-07,717 lbs0 lbs7,717 lbs
26Naphthalene91-20-36,108 lbs0 lbs6,108 lbs
27Trade SecretTRD SECRT5,905 lbs88 lbs5,993 lbs
28Dibutyl phthalate84-74-25,792 lbs0 lbs5,792 lbs
29Dimethylamine124-40-35,764 lbs0 lbs5,764 lbs
30Maleic anhydride108-31-65,267 lbs0 lbs5,267 lbs
31Formic acid64-18-64,772 lbs0 lbs4,772 lbs
321,2,4-Trimethylbenzene95-63-64,492 lbs0 lbs4,492 lbs
33Butyl acrylate141-32-24,451 lbs0 lbs4,451 lbs
34Propyleneimine75-55-83,701 lbs0 lbs3,701 lbs
35Acetaldehyde75-07-03,091 lbs0 lbs3,091 lbs
36Acetonitrile75-05-82,760 lbs0 lbs2,760 lbs
371,4-Dioxane123-91-12,644 lbs0 lbs2,644 lbs
38Chlorine7782-50-52,246 lbs0 lbs2,246 lbs
39Acrylonitrile107-13-12,062 lbs0 lbs2,062 lbs
40NonylphenolN5301,974 lbs0 lbs1,974 lbs
41Ethylene oxide75-21-81,467 lbs0 lbs1,467 lbs
42Nitric acid7697-37-21,405 lbs0 lbs1,405 lbs
43n-Butyl alcohol71-36-31,298 lbs0 lbs1,298 lbs
44o-Xylene95-47-6815 lbs0 lbs815 lbs
45Nonylphenol EthoxylatesN535773 lbs0 lbs773 lbs
46Chlorobenzene108-90-7583 lbs0 lbs583 lbs
47Diethanolamine111-42-2414 lbs0 lbs414 lbs
48Acrolein107-02-8402 lbs0 lbs402 lbs
49Cumene98-82-8384 lbs0 lbs384 lbs
50Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs370 lbs370 lbs
51Hydroquinone123-31-9355 lbs0 lbs355 lbs
52Zinc compoundsN982103 lbs146 lbs249 lbs
53Benzyl chloride100-44-7228 lbs0 lbs228 lbs
54Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
55Butyraldehyde123-72-8186 lbs0 lbs186 lbs
56Antimony And Antimony CompoundsN01090 lbs82 lbs171 lbs
574,4'-Isopropylidenediphenol80-05-7141 lbs0 lbs141 lbs
58Antimony compoundsN01064 lbs40 lbs104 lbs
59Diethyl sulfate64-67-585 lbs0 lbs85 lbs
60Lead And Lead CompoundsN42032 lbs3 lbs36 lbs
61Phthalic anhydride85-44-927 lbs0 lbs27 lbs
62Bis(2-chloroethyl) ether111-44-426 lbs0 lbs26 lbs
63Zinc (fume or dust)7440-66-626 lbs0 lbs26 lbs
642,4-Dimethylphenol105-67-917 lbs0 lbs17 lbs
65Lead compoundsN42015 lbs1 lbs16 lbs
66Triethylamine121-44-810 lbs0 lbs15 lbs
67Cadmium compoundsN07811 lbs0 lbs11 lbs
68Allyl alcohol107-18-610 lbs0 lbs10 lbs
69Pyridine110-86-110 lbs0 lbs10 lbs
70Chromium7440-47-37 lbs2 lbs9 lbs
71Methyl acrylate96-33-36 lbs0 lbs6 lbs
721,3-Phenylenediamine108-45-22 lbs0 lbs2 lbs
73Lead7439-92-12 lbs0 lbs2 lbs
74Biphenyl92-52-42 lbs0 lbs2 lbs
75Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs2 lbs
76Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, tert-Butyl alcohol, Acrylic acid, Vinyl acetate, Nickel compounds

View the full list of 56 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (56 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-123,639 lbs5 lbs697,028 lbs
2tert-Butyl alcohol75-65-0101,671 lbs0 lbs635,087 lbs
3Acrylic acid79-10-720,902 lbs0 lbs124,130 lbs
4Vinyl acetate108-05-411,698 lbs0 lbs121,509 lbs
5Nickel compoundsN4950 lbs0 lbs74,741 lbs
6Toluene108-88-326,919 lbs0 lbs71,751 lbs
7Ethylene glycol107-21-13,253 lbs0 lbs64,143 lbs
8Propylene115-07-140,450 lbs0 lbs40,825 lbs
9Propylene oxide75-56-922,691 lbs0 lbs40,716 lbs
10Xylene (mixed isomers)1330-20-7586 lbs0 lbs40,489 lbs
11Ethylene74-85-140,324 lbs0 lbs40,324 lbs
12Cyclohexane110-82-78,060 lbs0 lbs29,370 lbs
13Ammonia7664-41-723,068 lbs0 lbs23,164 lbs
14Acetaldehyde75-07-02 lbs0 lbs21,995 lbs
15n-Hexane110-54-319,086 lbs0 lbs20,921 lbs
16Styrene100-42-53,598 lbs0 lbs17,737 lbs
17Ethylbenzene100-41-44,042 lbs0 lbs15,706 lbs
18Dicyclopentadiene77-73-62,368 lbs0 lbs14,402 lbs
19Isoprene78-79-512,309 lbs0 lbs12,309 lbs
20Titanium tetrachloride7550-45-010,755 lbs0 lbs10,755 lbs
21Benzene71-43-29,442 lbs0 lbs9,998 lbs
22Vanadium compoundsN7700 lbs0 lbs5,540 lbs
231,3-Butadiene106-99-04,450 lbs0 lbs4,450 lbs
24Acetonitrile75-05-824 lbs0 lbs4,091 lbs
25Naphthalene91-20-3526 lbs0 lbs4,066 lbs
26Molybdenum trioxide1313-27-53,114 lbs0 lbs3,114 lbs
27NonylphenolN530551 lbs0 lbs2,678 lbs
28Certain glycol ethersN230421 lbs0 lbs2,084 lbs
291,2,4-Trimethylbenzene95-63-6599 lbs0 lbs1,996 lbs
30Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,840 lbs0 lbs1,840 lbs
31Formic acid64-18-6175 lbs0 lbs1,197 lbs
32Maleic anhydride108-31-61,173 lbs0 lbs1,173 lbs
33Dibutyl phthalate84-74-2496 lbs0 lbs1,073 lbs
34Acrylonitrile107-13-1883 lbs0 lbs1,033 lbs
35Formaldehyde50-00-0296 lbs0 lbs936 lbs
36Butyl acrylate141-32-2848 lbs0 lbs848 lbs
37Epichlorohydrin106-89-8643 lbs0 lbs643 lbs
38Trade SecretTRD SECRT0 lbs46 lbs581 lbs
39Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs551 lbs
40Benzyl chloride100-44-7119 lbs0 lbs379 lbs
41Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
42Nitric acid7697-37-2217 lbs0 lbs217 lbs
43Ethylene oxide75-21-8187 lbs0 lbs188 lbs
44Hydroquinone123-31-923 lbs0 lbs185 lbs
454,4'-Isopropylidenediphenol80-05-71 lbs0 lbs146 lbs
461,4-Dioxane123-91-1126 lbs0 lbs126 lbs
47Chlorobenzene108-90-7100 lbs0 lbs100 lbs
48Antimony And Antimony CompoundsN01026 lbs19 lbs62 lbs
49Acrolein107-02-828 lbs0 lbs38 lbs
50Zinc compoundsN98213 lbs10 lbs33 lbs
51Propyleneimine75-55-832 lbs0 lbs32 lbs
52Phthalic anhydride85-44-914 lbs0 lbs14 lbs
53Zinc (fume or dust)7440-66-69 lbs0 lbs9 lbs
54Chromium7440-47-34 lbs1 lbs5 lbs
55Lead And Lead CompoundsN4202 lbs1 lbs3 lbs
56Methyl acrylate96-33-32 lbs0 lbs2 lbs

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