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
4120 BOARDWALK BLVD SEABROOK 77586
Building Size
2,960 sqft
Total structure area from HCAD building records.
Elevation
11.86 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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: 1.86 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.

  • 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.

🏭 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)
3.79 million lbs
Extremely High
581.0x more than typical Houston property
≈ 190 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)
3.78 million lbs
Extremely High
782.9x 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)
15 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)3,790,471 lbs3,775,648 lbs14,823 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,801,556 lbs338,949 lbs2,140 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):

tert-Butyl alcohol, Propylene, Methanol, Toluene, Acrylic acid

View the full list of 83 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (83 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
3Methanol67-56-1319,711 lbs0 lbs319,711 lbs
4Toluene108-88-3303,864 lbs0 lbs303,864 lbs
5Acrylic acid79-10-7248,318 lbs0 lbs248,318 lbs
6Propylene oxide75-56-9214,778 lbs0 lbs214,778 lbs
7n-Hexane110-54-3188,310 lbs0 lbs188,310 lbs
8Ethylene74-85-1178,679 lbs0 lbs178,679 lbs
9Ammonia7664-41-7176,119 lbs0 lbs176,119 lbs
10Benzene71-43-2129,275 lbs0 lbs129,275 lbs
11Titanium tetrachloride7550-45-0108,195 lbs0 lbs108,195 lbs
121,3-Butadiene106-99-092,399 lbs0 lbs92,399 lbs
13Ethylbenzene100-41-466,752 lbs0 lbs66,752 lbs
14Methyl methacrylate80-62-659,716 lbs0 lbs59,988 lbs
15Molybdenum trioxide1313-27-551,068 lbs0 lbs51,068 lbs
16Styrene100-42-549,839 lbs0 lbs49,970 lbs
17Ethylene glycol107-21-138,774 lbs0 lbs38,774 lbs
18Certain glycol ethersN23034,364 lbs0 lbs34,364 lbs
19Isoprene78-79-531,965 lbs0 lbs31,965 lbs
20Dicyclopentadiene77-73-620,009 lbs0 lbs20,009 lbs
21Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-015,293 lbs0 lbs15,293 lbs
22Xylene (mixed isomers)1330-20-714,870 lbs0 lbs14,870 lbs
23Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51145 lbs14,147 lbs14,192 lbs
24n-Butyl alcohol71-36-312,460 lbs0 lbs12,460 lbs
25Epichlorohydrin106-89-88,484 lbs0 lbs8,484 lbs
26Formaldehyde50-00-07,734 lbs0 lbs7,734 lbs
27Naphthalene91-20-36,231 lbs0 lbs6,231 lbs
28Trade SecretTRD SECRT5,905 lbs88 lbs5,993 lbs
29Dibutyl phthalate84-74-25,792 lbs0 lbs5,792 lbs
30Dimethylamine124-40-35,764 lbs0 lbs5,764 lbs
31Maleic anhydride108-31-65,267 lbs0 lbs5,267 lbs
32Formic acid64-18-64,909 lbs0 lbs4,909 lbs
331,2,4-Trimethylbenzene95-63-64,492 lbs0 lbs4,492 lbs
34Butyl acrylate141-32-24,451 lbs0 lbs4,451 lbs
35Propyleneimine75-55-83,701 lbs0 lbs3,701 lbs
36Vinyl acetate108-05-43,230 lbs0 lbs3,230 lbs
37Vanadium compoundsN7703,122 lbs0 lbs3,137 lbs
38Acetonitrile75-05-82,760 lbs0 lbs2,760 lbs
39Zinc compoundsN9822,402 lbs346 lbs2,749 lbs
40Nickel And Nickel CompoundsN4952,238 lbs75 lbs2,313 lbs
41Acrylonitrile107-13-12,062 lbs0 lbs2,062 lbs
42NonylphenolN5301,974 lbs0 lbs1,974 lbs
43Vanadium (except when contained in an alloy)7440-62-21,691 lbs0 lbs1,691 lbs
44Nickel compoundsN4951,389 lbs21 lbs1,410 lbs
45Ethylene oxide75-21-81,303 lbs0 lbs1,303 lbs
46o-Xylene95-47-6815 lbs0 lbs815 lbs
47Nonylphenol EthoxylatesN535773 lbs0 lbs773 lbs
48Cobalt And Cobalt CompoundsN096741 lbs0 lbs741 lbs
49Nitric acid7697-37-2637 lbs0 lbs637 lbs
50Chlorobenzene108-90-7583 lbs0 lbs583 lbs
51Acetaldehyde75-07-0504 lbs0 lbs504 lbs
52Cobalt compoundsN096454 lbs0 lbs454 lbs
53Diethanolamine111-42-2414 lbs0 lbs414 lbs
54Acrolein107-02-8402 lbs0 lbs402 lbs
55Cumene98-82-8384 lbs0 lbs384 lbs
56Hydroquinone123-31-9355 lbs0 lbs355 lbs
57Phosphorus (yellow or white)12185-10-3250 lbs0 lbs250 lbs
58Benzyl chloride100-44-7228 lbs0 lbs228 lbs
59Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
60Butyraldehyde123-72-8186 lbs0 lbs186 lbs
61Antimony And Antimony CompoundsN01085 lbs77 lbs161 lbs
624,4'-Isopropylidenediphenol80-05-7141 lbs0 lbs141 lbs
63Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N090102 lbs14 lbs116 lbs
64Diethyl sulfate64-67-585 lbs0 lbs85 lbs
65Antimony compoundsN01044 lbs25 lbs69 lbs
66Lead And Lead CompoundsN42033 lbs3 lbs37 lbs
67Chromium compounds (except for chromite ore mined in the Transvaal Region)N09030 lbs4 lbs34 lbs
68Sodium nitrite7632-00-033 lbs0 lbs33 lbs
69Phthalic anhydride85-44-927 lbs0 lbs27 lbs
70Bis(2-chloroethyl) ether111-44-426 lbs0 lbs26 lbs
71Zinc (fume or dust)7440-66-626 lbs0 lbs26 lbs
72Lead compoundsN42017 lbs1 lbs18 lbs
73Copper compoundsN1000 lbs18 lbs18 lbs
742,4-Dimethylphenol105-67-917 lbs0 lbs17 lbs
75Triethylamine121-44-810 lbs0 lbs15 lbs
76Cadmium compoundsN07811 lbs0 lbs11 lbs
77Allyl alcohol107-18-610 lbs0 lbs10 lbs
78Pyridine110-86-110 lbs0 lbs10 lbs
79Chromium7440-47-37 lbs2 lbs9 lbs
80Methyl acrylate96-33-36 lbs0 lbs6 lbs
81Lead7439-92-12 lbs0 lbs2 lbs
82Biphenyl92-52-42 lbs0 lbs2 lbs
83N-Methyl-2-pyrrolidone872-50-41 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

tert-Butyl alcohol, Molybdenum trioxide, Methanol, Acrylic acid, Vanadium (except when contained in an alloy)

View the full list of 55 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (55 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1tert-Butyl alcohol75-65-0101,671 lbs0 lbs635,087 lbs
2Molybdenum trioxide1313-27-54,957 lbs0 lbs227,922 lbs
3Methanol67-56-110,387 lbs0 lbs211,232 lbs
4Acrylic acid79-10-720,902 lbs0 lbs124,130 lbs
5Vanadium (except when contained in an alloy)7440-62-2170 lbs0 lbs86,403 lbs
6Toluene108-88-326,919 lbs0 lbs71,751 lbs
7Ethylene glycol107-21-13,246 lbs0 lbs64,136 lbs
8Propylene115-07-140,450 lbs0 lbs40,825 lbs
9Xylene (mixed isomers)1330-20-7586 lbs0 lbs40,489 lbs
10Vanadium compoundsN77067 lbs0 lbs39,269 lbs
11Cobalt And Cobalt CompoundsN096100 lbs0 lbs37,290 lbs
12Propylene oxide75-56-915,148 lbs0 lbs33,170 lbs
13Nickel And Nickel CompoundsN495341 lbs26 lbs32,206 lbs
14n-Hexane110-54-318,926 lbs0 lbs18,926 lbs
15Ethylene74-85-116,290 lbs0 lbs16,290 lbs
16Ethylbenzene100-41-44,042 lbs0 lbs15,706 lbs
17Dicyclopentadiene77-73-62,368 lbs0 lbs14,402 lbs
18Ammonia7664-41-712,667 lbs0 lbs12,769 lbs
19Methyl methacrylate80-62-612,306 lbs0 lbs12,306 lbs
20Titanium tetrachloride7550-45-010,755 lbs0 lbs10,755 lbs
21Isoprene78-79-510,184 lbs0 lbs10,184 lbs
22Benzene71-43-29,442 lbs0 lbs9,998 lbs
23Styrene100-42-53,915 lbs0 lbs4,577 lbs
24Acetonitrile75-05-824 lbs0 lbs4,091 lbs
25Naphthalene91-20-3526 lbs0 lbs4,066 lbs
261,3-Butadiene106-99-03,263 lbs0 lbs3,263 lbs
27NonylphenolN530551 lbs0 lbs2,678 lbs
28Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,038 lbs2,230 lbs
29Certain glycol ethersN230421 lbs0 lbs2,084 lbs
301,2,4-Trimethylbenzene95-63-6599 lbs0 lbs1,996 lbs
31Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,840 lbs0 lbs1,840 lbs
32Formic acid64-18-6175 lbs0 lbs1,197 lbs
33Maleic anhydride108-31-61,173 lbs0 lbs1,173 lbs
34Dibutyl phthalate84-74-2496 lbs0 lbs1,073 lbs
35Acrylonitrile107-13-1883 lbs0 lbs1,033 lbs
36Formaldehyde50-00-0296 lbs0 lbs925 lbs
37Butyl acrylate141-32-2848 lbs0 lbs848 lbs
38Epichlorohydrin106-89-8643 lbs0 lbs643 lbs
39Nitric acid7697-37-2633 lbs0 lbs633 lbs
40Trade SecretTRD SECRT0 lbs46 lbs581 lbs
41Benzyl chloride100-44-7119 lbs0 lbs379 lbs
42Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
43Hydroquinone123-31-923 lbs0 lbs185 lbs
44Ethylene oxide75-21-8146 lbs0 lbs147 lbs
454,4'-Isopropylidenediphenol80-05-71 lbs0 lbs146 lbs
46Chlorobenzene108-90-7100 lbs0 lbs100 lbs
47Antimony And Antimony CompoundsN01026 lbs19 lbs62 lbs
48Acrolein107-02-828 lbs0 lbs38 lbs
49Zinc compoundsN98213 lbs10 lbs33 lbs
50Propyleneimine75-55-832 lbs0 lbs32 lbs
51Phthalic anhydride85-44-914 lbs0 lbs14 lbs
52Zinc (fume or dust)7440-66-69 lbs0 lbs9 lbs
53Chromium7440-47-34 lbs1 lbs5 lbs
54Lead And Lead CompoundsN4202 lbs1 lbs3 lbs
55Methyl acrylate96-33-32 lbs0 lbs2 lbs

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