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
10307 SHELL ROCK RD LA PORTE 77571
Building Size
4,133 sqft
Total structure area from HCAD building records.
Elevation
18.34 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: 8.34 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)
4.22 million lbs
Extremely High
646.8x more than typical Houston property
≈ 211 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)
4.2 million lbs
Extremely High
871.7x 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)
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)4,220,134 lbs4,203,798 lbs16,336 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,045,023 lbs362,527 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 58 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (58 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,020,298 lbs0 lbs1,020,298 lbs
2Ethylene74-85-1746,027 lbs0 lbs746,027 lbs
3Ammonia7664-41-7501,457 lbs123 lbs501,600 lbs
4Toluene108-88-3434,759 lbs0 lbs434,759 lbs
5Nitric acid7697-37-2397,668 lbs55 lbs397,748 lbs
6Methanol67-56-1259,579 lbs0 lbs266,106 lbs
7Ethylene glycol107-21-1104,877 lbs0 lbs104,877 lbs
8Ethylene oxide75-21-8100,358 lbs0 lbs100,358 lbs
9Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
10n-Butyl alcohol71-36-367,098 lbs0 lbs67,098 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
17Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
18Cumene98-82-831,173 lbs0 lbs31,173 lbs
19Phenol108-95-230,497 lbs0 lbs30,497 lbs
20Vinyl acetate108-05-422,306 lbs0 lbs22,306 lbs
21Xylene (mixed isomers)1330-20-717,096 lbs0 lbs17,096 lbs
22Nickel compoundsN49511,795 lbs1,904 lbs13,714 lbs
23Styrene100-42-512,385 lbs0 lbs12,385 lbs
242-Methoxyethanol109-86-411,669 lbs0 lbs11,669 lbs
25Benzene71-43-210,536 lbs0 lbs10,536 lbs
26Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
27Chloroethane75-00-39,070 lbs0 lbs9,070 lbs
28Cobalt compoundsN0965,871 lbs886 lbs6,772 lbs
292-Ethoxyethanol110-80-56,044 lbs0 lbs6,044 lbs
30Diphenylamine122-39-45,938 lbs0 lbs5,938 lbs
31tert-Butyl alcohol75-65-05,606 lbs0 lbs5,606 lbs
32Ethylbenzene100-41-45,307 lbs0 lbs5,307 lbs
33Nickel And Nickel CompoundsN4954,878 lbs62 lbs4,940 lbs
34Cobalt And Cobalt CompoundsN0964,551 lbs42 lbs4,593 lbs
35Dimethylamine124-40-33,754 lbs0 lbs3,754 lbs
36Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
37Methyl methacrylate80-62-63,052 lbs0 lbs3,052 lbs
38Formaldehyde50-00-02,738 lbs102 lbs2,840 lbs
39Propylene oxide75-56-92,352 lbs0 lbs2,352 lbs
40Maleic anhydride108-31-61,577 lbs0 lbs1,577 lbs
41Allyl alcohol107-18-61,569 lbs0 lbs1,569 lbs
421,2,4-Trimethylbenzene95-63-61,065 lbs0 lbs1,065 lbs
43NonylphenolN5301,013 lbs0 lbs1,013 lbs
44Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
45Cyclohexane110-82-7857 lbs0 lbs857 lbs
46Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
47Hydrazine302-01-2437 lbs0 lbs437 lbs
48Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
49Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
50Lead compoundsN420138 lbs4 lbs142 lbs
51Copper compoundsN100132 lbs6 lbs138 lbs
52Naphthalene91-20-396 lbs0 lbs96 lbs
53Cyanide compoundsN1065 lbs0 lbs58 lbs
54Chloromethane74-87-351 lbs0 lbs51 lbs
55Butyl acrylate141-32-25 lbs0 lbs5 lbs
56Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
57Cumene hydroperoxide80-15-92 lbs0 lbs2 lbs
58Boron trifluoride7637-07-21 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Ethylene glycol, n-Hexane, tert-Butyl alcohol, Nonylphenol Ethoxylates

View the full list of 53 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (53 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-116,274 lbs0 lbs953,041 lbs
2Ethylene glycol107-21-13,270 lbs0 lbs147,096 lbs
3n-Hexane110-54-3117,147 lbs0 lbs117,671 lbs
4tert-Butyl alcohol75-65-0467 lbs0 lbs93,900 lbs
5Nonylphenol EthoxylatesN535131 lbs0 lbs93,342 lbs
6Dimethylamine124-40-3341 lbs0 lbs92,098 lbs
7Ethylene74-85-190,976 lbs0 lbs90,976 lbs
8Molybdenum trioxide1313-27-52,770 lbs482 lbs79,984 lbs
9Ammonia7664-41-753,155 lbs5 lbs54,981 lbs
10Diphenylamine122-39-4105 lbs0 lbs48,731 lbs
111,2,4-Trimethylbenzene95-63-699 lbs0 lbs44,035 lbs
12Toluene108-88-314,342 lbs0 lbs42,732 lbs
13Copper7440-50-80 lbs0 lbs27,230 lbs
14Ethylene oxide75-21-88,025 lbs0 lbs16,573 lbs
15Xylene (mixed isomers)1330-20-7635 lbs0 lbs13,936 lbs
16Certain glycol ethersN2303,460 lbs0 lbs13,228 lbs
17Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
18Propylene115-07-110,035 lbs0 lbs10,035 lbs
19Chloroethane75-00-33,424 lbs0 lbs9,649 lbs
20Nitric acid7697-37-29,490 lbs5 lbs9,500 lbs
21Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
22Vinyl acetate108-05-42,418 lbs0 lbs7,117 lbs
23Phenol108-95-21,875 lbs0 lbs6,506 lbs
24n-Butyl alcohol71-36-32,203 lbs0 lbs5,477 lbs
25Cumene98-82-82,616 lbs0 lbs5,324 lbs
26Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
27Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
28Naphthalene91-20-312 lbs0 lbs4,436 lbs
29Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
30Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
31Ethylbenzene100-41-4275 lbs0 lbs2,926 lbs
32Cobalt compoundsN096455 lbs36 lbs2,816 lbs
33Acetaldehyde75-07-0869 lbs0 lbs2,167 lbs
34Styrene100-42-5374 lbs0 lbs2,108 lbs
35Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
36Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
37Benzene71-43-21,090 lbs0 lbs1,090 lbs
382-Methoxyethanol109-86-41,027 lbs0 lbs1,045 lbs
39Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
40Formaldehyde50-00-0154 lbs0 lbs667 lbs
41Maleic anhydride108-31-6186 lbs0 lbs592 lbs
422-Ethoxyethanol110-80-5407 lbs0 lbs429 lbs
43Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
44Methyl methacrylate80-62-6387 lbs0 lbs391 lbs
45Cyclohexane110-82-724 lbs0 lbs315 lbs
46Propylene oxide75-56-999 lbs0 lbs263 lbs
47NonylphenolN5301 lbs0 lbs224 lbs
48Acrylic acid79-10-7186 lbs0 lbs192 lbs
49Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
50Hydrazine302-01-239 lbs0 lbs39 lbs
51Benzoyl chloride98-88-433 lbs0 lbs33 lbs
52Acrylonitrile107-13-10 lbs0 lbs4 lbs
53Aniline62-53-30 lbs0 lbs2 lbs

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