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
10458 SHELL ROCK RD LA PORTE 77571
Building Size
2,266 sqft
Total structure area from HCAD building records.
Elevation
19.82 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: 9.82 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 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)
4.35 million lbs
Extremely High
666.3x more than typical Houston property
≈ 217 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)
4.33 million lbs
Extremely High
898.0x 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)
16 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)4,346,871 lbs4,330,535 lbs16,336 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,471,500 lbs372,975 lbs1,275 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):

n-Hexane, Ethylene, Ammonia, Toluene, Nitric acid

View the full list of 72 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (72 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,036,155 lbs0 lbs1,036,155 lbs
2Ethylene74-85-1746,027 lbs0 lbs746,027 lbs
3Ammonia7664-41-7505,248 lbs123 lbs505,391 lbs
4Toluene108-88-3437,798 lbs0 lbs437,798 lbs
5Nitric acid7697-37-2397,668 lbs55 lbs397,748 lbs
6Methanol67-56-1277,555 lbs0 lbs284,082 lbs
7Ethylene glycol107-21-1104,917 lbs0 lbs104,917 lbs
8Ethylene oxide75-21-8100,358 lbs0 lbs100,358 lbs
9Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
10n-Butyl alcohol71-36-368,309 lbs0 lbs68,309 lbs
11Certain glycol ethersN23046,549 lbs0 lbs46,550 lbs
12Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
13Molybdenum trioxide1313-27-537,655 lbs3,227 lbs40,897 lbs
14Acetaldehyde75-07-037,584 lbs0 lbs37,584 lbs
15Propylene115-07-136,801 lbs0 lbs36,801 lbs
16Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
17Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
18Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
19Cumene98-82-831,173 lbs0 lbs31,173 lbs
20Phenol108-95-230,497 lbs0 lbs30,497 lbs
21Xylene (mixed isomers)1330-20-722,722 lbs0 lbs22,722 lbs
22Vinyl acetate108-05-422,306 lbs0 lbs22,306 lbs
23Propylene oxide75-56-918,733 lbs0 lbs18,733 lbs
24Styrene100-42-513,938 lbs0 lbs13,938 lbs
25Nickel compoundsN49511,795 lbs1,905 lbs13,715 lbs
262-Methoxyethanol109-86-411,669 lbs0 lbs11,669 lbs
27Benzene71-43-210,536 lbs0 lbs10,536 lbs
28Chlorine7782-50-510,430 lbs0 lbs10,430 lbs
29Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
30Chloroethane75-00-39,070 lbs0 lbs9,070 lbs
31tert-Butyl alcohol75-65-06,860 lbs0 lbs6,860 lbs
32Cobalt compoundsN0965,871 lbs886 lbs6,772 lbs
332-Ethoxyethanol110-80-56,044 lbs0 lbs6,044 lbs
34Diphenylamine122-39-45,938 lbs0 lbs5,938 lbs
35Ethylbenzene100-41-45,307 lbs0 lbs5,307 lbs
36Nickel And Nickel CompoundsN4954,878 lbs62 lbs4,940 lbs
37Cobalt And Cobalt CompoundsN0964,551 lbs42 lbs4,593 lbs
38Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
39Dimethylamine124-40-33,754 lbs0 lbs3,754 lbs
40Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
41Allyl alcohol107-18-63,389 lbs0 lbs3,389 lbs
42Methyl methacrylate80-62-63,052 lbs0 lbs3,052 lbs
43Formaldehyde50-00-02,738 lbs102 lbs2,840 lbs
441,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
45Phosgene75-44-51,958 lbs0 lbs1,958 lbs
46Maleic anhydride108-31-61,577 lbs0 lbs1,577 lbs
47Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
48Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
49sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
50Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
511,2,4-Trimethylbenzene95-63-61,065 lbs0 lbs1,065 lbs
52NonylphenolN5301,013 lbs0 lbs1,013 lbs
53Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
54Cyclohexane110-82-7898 lbs0 lbs898 lbs
55Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
56Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
57Hydrazine302-01-2437 lbs0 lbs437 lbs
58Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
59Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
60Lead compoundsN420138 lbs4 lbs142 lbs
61Copper compoundsN100132 lbs6 lbs138 lbs
62Naphthalene91-20-396 lbs0 lbs96 lbs
63Cyanide compoundsN1065 lbs0 lbs58 lbs
64Chloromethane74-87-351 lbs0 lbs51 lbs
65N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
66Phthalic anhydride85-44-913 lbs0 lbs13 lbs
67Butyl acrylate141-32-25 lbs0 lbs5 lbs
68Zinc compoundsN9825 lbs0 lbs5 lbs
69Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
70Cumene hydroperoxide80-15-92 lbs0 lbs2 lbs
71Nickel7440-02-02 lbs0 lbs2 lbs
72Boron trifluoride7637-07-21 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Allyl alcohol, Ethylene glycol, n-Hexane, Toluene

View the full list of 63 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (63 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-116,283 lbs0 lbs954,899 lbs
2Allyl alcohol107-18-696 lbs0 lbs233,588 lbs
3Ethylene glycol107-21-13,270 lbs0 lbs147,096 lbs
4n-Hexane110-54-3117,508 lbs0 lbs133,445 lbs
5Toluene108-88-314,538 lbs0 lbs118,527 lbs
6tert-Butyl alcohol75-65-0493 lbs0 lbs109,357 lbs
7Nonylphenol EthoxylatesN535131 lbs0 lbs93,342 lbs
8Dimethylamine124-40-3341 lbs0 lbs92,098 lbs
9Ethylene74-85-190,976 lbs0 lbs90,976 lbs
10Molybdenum trioxide1313-27-52,770 lbs482 lbs79,984 lbs
11Ammonia7664-41-754,081 lbs5 lbs55,906 lbs
12Diphenylamine122-39-4105 lbs0 lbs48,731 lbs
131,2,4-Trimethylbenzene95-63-699 lbs0 lbs44,035 lbs
14Xylene (mixed isomers)1330-20-7723 lbs0 lbs39,275 lbs
15Copper7440-50-80 lbs0 lbs27,230 lbs
16Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
17Styrene100-42-5530 lbs0 lbs17,694 lbs
18Ethylene oxide75-21-88,025 lbs0 lbs16,573 lbs
19Certain glycol ethersN2303,460 lbs0 lbs13,228 lbs
20Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
21Propylene115-07-110,035 lbs0 lbs10,035 lbs
22Chloroethane75-00-33,424 lbs0 lbs9,649 lbs
23Nitric acid7697-37-29,490 lbs5 lbs9,500 lbs
24n-Butyl alcohol71-36-32,288 lbs0 lbs8,102 lbs
25Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
26Dicyclopentadiene77-73-697 lbs0 lbs7,551 lbs
27Vinyl acetate108-05-42,418 lbs0 lbs7,117 lbs
28Phenol108-95-21,875 lbs0 lbs6,506 lbs
29Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
30Cumene98-82-82,616 lbs0 lbs5,324 lbs
31Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
32Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
33Naphthalene91-20-312 lbs0 lbs4,436 lbs
34Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
35Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
36sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
37Ethylbenzene100-41-4275 lbs0 lbs2,926 lbs
38Cobalt compoundsN096455 lbs36 lbs2,816 lbs
39Acetaldehyde75-07-0869 lbs0 lbs2,167 lbs
40Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
41Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
42Benzene71-43-21,090 lbs0 lbs1,090 lbs
432-Methoxyethanol109-86-41,027 lbs0 lbs1,045 lbs
44Chlorine7782-50-5961 lbs0 lbs961 lbs
45Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
46Formaldehyde50-00-0154 lbs0 lbs667 lbs
47Propylene oxide75-56-9469 lbs0 lbs633 lbs
48Maleic anhydride108-31-6186 lbs0 lbs592 lbs
492-Ethoxyethanol110-80-5407 lbs0 lbs429 lbs
50Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
51Methyl methacrylate80-62-6387 lbs0 lbs391 lbs
52Cyclohexane110-82-765 lbs0 lbs356 lbs
53NonylphenolN5301 lbs0 lbs224 lbs
54Acrylic acid79-10-7186 lbs0 lbs192 lbs
55Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
56Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
571,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
58Hydrazine302-01-239 lbs0 lbs39 lbs
59Benzoyl chloride98-88-433 lbs0 lbs33 lbs
60Phosgene75-44-527 lbs0 lbs27 lbs
61Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
62Acrylonitrile107-13-10 lbs0 lbs4 lbs
63Aniline62-53-30 lbs0 lbs2 lbs

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