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
10103 SHELL ROCK RD LA PORTE 77571
Building Size
1,989 sqft
Total structure area from HCAD building records.
Elevation
20.49 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: 10.49 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 86% 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)
3.27 million lbs
Extremely High
500.6x more than typical Houston property
≈ 163 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)
3.25 million lbs
Extremely High
673.9x 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)
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)3,266,235 lbs3,249,899 lbs16,336 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,475,197 lbs297,782 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 86% 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, Toluene, Ammonia, Nitric acid, Ethylene

View the full list of 51 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (51 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,020,298 lbs0 lbs1,020,298 lbs
2Toluene108-88-3427,859 lbs0 lbs427,859 lbs
3Ammonia7664-41-7413,789 lbs123 lbs413,932 lbs
4Nitric acid7697-37-2397,668 lbs55 lbs397,748 lbs
5Ethylene74-85-1397,288 lbs0 lbs397,288 lbs
6Methanol67-56-195,429 lbs0 lbs101,956 lbs
7Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
8n-Butyl alcohol71-36-354,430 lbs0 lbs54,430 lbs
9Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
10Molybdenum trioxide1313-27-537,655 lbs3,227 lbs40,897 lbs
11Propylene115-07-136,801 lbs0 lbs36,801 lbs
12Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
13Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
14Cumene98-82-831,173 lbs0 lbs31,173 lbs
15Phenol108-95-230,497 lbs0 lbs30,497 lbs
16Xylene (mixed isomers)1330-20-717,096 lbs0 lbs17,096 lbs
17Nickel compoundsN49511,795 lbs1,904 lbs13,714 lbs
18Styrene100-42-512,385 lbs0 lbs12,385 lbs
19Benzene71-43-210,536 lbs0 lbs10,536 lbs
20Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
21Certain glycol ethersN2309,458 lbs0 lbs9,459 lbs
22Cobalt compoundsN0965,871 lbs886 lbs6,772 lbs
23Diphenylamine122-39-45,938 lbs0 lbs5,938 lbs
24tert-Butyl alcohol75-65-05,606 lbs0 lbs5,606 lbs
25Ethylbenzene100-41-45,307 lbs0 lbs5,307 lbs
26Nickel And Nickel CompoundsN4954,878 lbs62 lbs4,940 lbs
27Cobalt And Cobalt CompoundsN0964,551 lbs42 lbs4,593 lbs
28Dimethylamine124-40-33,754 lbs0 lbs3,754 lbs
29Formaldehyde50-00-02,738 lbs102 lbs2,840 lbs
30Ethylene oxide75-21-82,160 lbs0 lbs2,160 lbs
31Propylene oxide75-56-91,981 lbs0 lbs1,981 lbs
32Maleic anhydride108-31-61,577 lbs0 lbs1,577 lbs
33Allyl alcohol107-18-61,569 lbs0 lbs1,569 lbs
341,2,4-Trimethylbenzene95-63-61,065 lbs0 lbs1,065 lbs
35NonylphenolN5301,013 lbs0 lbs1,013 lbs
36Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
37Cyclohexane110-82-7857 lbs0 lbs857 lbs
38Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
39Hydrazine302-01-2437 lbs0 lbs437 lbs
40Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
41Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
42Lead compoundsN420138 lbs4 lbs142 lbs
43Copper compoundsN100132 lbs6 lbs138 lbs
44Naphthalene91-20-396 lbs0 lbs96 lbs
45Cyanide compoundsN1065 lbs0 lbs58 lbs
46Chloromethane74-87-351 lbs0 lbs51 lbs
47Ethylene glycol107-21-123 lbs0 lbs23 lbs
48Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
49Cumene hydroperoxide80-15-92 lbs0 lbs2 lbs
50Methyl methacrylate80-62-62 lbs0 lbs2 lbs
51Boron trifluoride7637-07-21 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, n-Hexane, tert-Butyl alcohol, Nonylphenol Ethoxylates, Dimethylamine

View the full list of 46 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (46 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-13,031 lbs0 lbs614,175 lbs
2n-Hexane110-54-3117,147 lbs0 lbs117,671 lbs
3tert-Butyl alcohol75-65-0467 lbs0 lbs93,900 lbs
4Nonylphenol EthoxylatesN535131 lbs0 lbs93,342 lbs
5Dimethylamine124-40-3341 lbs0 lbs92,098 lbs
6Molybdenum trioxide1313-27-52,770 lbs482 lbs79,984 lbs
7Ethylene74-85-171,321 lbs0 lbs71,321 lbs
8Diphenylamine122-39-4105 lbs0 lbs48,731 lbs
9Ammonia7664-41-745,360 lbs5 lbs46,960 lbs
101,2,4-Trimethylbenzene95-63-699 lbs0 lbs44,035 lbs
11Toluene108-88-314,063 lbs0 lbs40,881 lbs
12Copper7440-50-80 lbs0 lbs27,230 lbs
13Xylene (mixed isomers)1330-20-7635 lbs0 lbs13,936 lbs
14Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
15Propylene115-07-110,035 lbs0 lbs10,035 lbs
16Nitric acid7697-37-29,490 lbs5 lbs9,500 lbs
17Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
18Phenol108-95-21,875 lbs0 lbs6,506 lbs
19Cumene98-82-82,616 lbs0 lbs5,324 lbs
20Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
21Naphthalene91-20-312 lbs0 lbs4,436 lbs
22Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
23Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
24Ethylbenzene100-41-4275 lbs0 lbs2,926 lbs
25Cobalt compoundsN096455 lbs36 lbs2,816 lbs
26Ethylene oxide75-21-870 lbs0 lbs2,770 lbs
27Styrene100-42-5374 lbs0 lbs2,108 lbs
28n-Butyl alcohol71-36-3932 lbs0 lbs2,009 lbs
29Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
30Ethylene glycol107-21-10 lbs0 lbs1,138 lbs
31Certain glycol ethersN230961 lbs0 lbs1,125 lbs
32Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
33Benzene71-43-21,090 lbs0 lbs1,090 lbs
34Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
35Formaldehyde50-00-0154 lbs0 lbs667 lbs
36Maleic anhydride108-31-6186 lbs0 lbs592 lbs
37Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
38Cyclohexane110-82-724 lbs0 lbs315 lbs
39NonylphenolN5301 lbs0 lbs224 lbs
40Propylene oxide75-56-939 lbs0 lbs203 lbs
41Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
42Hydrazine302-01-239 lbs0 lbs39 lbs
43Benzoyl chloride98-88-433 lbs0 lbs33 lbs
44Methyl methacrylate80-62-60 lbs0 lbs4 lbs
45Acrylonitrile107-13-10 lbs0 lbs4 lbs
46Aniline62-53-30 lbs0 lbs2 lbs

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