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
3861 PECAN CIR LA PORTE 77571
Building Size
2,134 sqft
Total structure area from HCAD building records.
Elevation
20.22 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: 10.22 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 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)
3.69 million lbs
Extremely High
566.1x more than typical Houston property
≈ 185 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)
3.68 million lbs
Extremely High
762.5x 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)3,693,489 lbs3,677,153 lbs16,336 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,258,401 lbs331,616 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 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):

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

View the full list of 69 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (69 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,036,155 lbs0 lbs1,036,155 lbs
2Ammonia7664-41-7505,248 lbs123 lbs505,391 lbs
3Toluene108-88-3430,898 lbs0 lbs430,898 lbs
4Ethylene74-85-1420,145 lbs0 lbs420,145 lbs
5Nitric acid7697-37-2397,668 lbs55 lbs397,748 lbs
6Methanol67-56-1260,432 lbs0 lbs266,959 lbs
7Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
8n-Butyl alcohol71-36-355,641 lbs0 lbs55,641 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
13Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
14Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
15Cumene98-82-831,173 lbs0 lbs31,173 lbs
16Phenol108-95-230,497 lbs0 lbs30,497 lbs
17Xylene (mixed isomers)1330-20-722,722 lbs0 lbs22,722 lbs
18Vinyl acetate108-05-422,306 lbs0 lbs22,306 lbs
19Propylene oxide75-56-918,733 lbs0 lbs18,733 lbs
20Styrene100-42-513,938 lbs0 lbs13,938 lbs
21Nickel compoundsN49511,795 lbs1,905 lbs13,715 lbs
22Acetaldehyde75-07-012,256 lbs0 lbs12,256 lbs
23Benzene71-43-210,536 lbs0 lbs10,536 lbs
24Chlorine7782-50-510,430 lbs0 lbs10,430 lbs
25Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
26Certain glycol ethersN2309,458 lbs0 lbs9,459 lbs
27tert-Butyl alcohol75-65-06,860 lbs0 lbs6,860 lbs
28Cobalt compoundsN0965,871 lbs886 lbs6,772 lbs
29Diphenylamine122-39-45,938 lbs0 lbs5,938 lbs
30Ethylbenzene100-41-45,307 lbs0 lbs5,307 lbs
31Nickel And Nickel CompoundsN4954,878 lbs62 lbs4,940 lbs
32Cobalt And Cobalt CompoundsN0964,551 lbs42 lbs4,593 lbs
33Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
34Dimethylamine124-40-33,754 lbs0 lbs3,754 lbs
35Ethylene oxide75-21-83,591 lbs0 lbs3,591 lbs
36Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
37Allyl alcohol107-18-63,389 lbs0 lbs3,389 lbs
38Methyl methacrylate80-62-63,052 lbs0 lbs3,052 lbs
39Formaldehyde50-00-02,738 lbs102 lbs2,840 lbs
401,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
41Phosgene75-44-51,958 lbs0 lbs1,958 lbs
42Maleic anhydride108-31-61,577 lbs0 lbs1,577 lbs
43Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
44Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
45sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
46Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
471,2,4-Trimethylbenzene95-63-61,065 lbs0 lbs1,065 lbs
48NonylphenolN5301,013 lbs0 lbs1,013 lbs
49Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
50Cyclohexane110-82-7898 lbs0 lbs898 lbs
51Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
52Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
53Hydrazine302-01-2437 lbs0 lbs437 lbs
54Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
55Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
56Lead compoundsN420138 lbs4 lbs142 lbs
57Copper compoundsN100132 lbs6 lbs138 lbs
58Naphthalene91-20-396 lbs0 lbs96 lbs
59Ethylene glycol107-21-177 lbs0 lbs77 lbs
60Cyanide compoundsN1065 lbs0 lbs58 lbs
61Chloromethane74-87-351 lbs0 lbs51 lbs
62N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
63Phthalic anhydride85-44-913 lbs0 lbs13 lbs
64Butyl acrylate141-32-25 lbs0 lbs5 lbs
65Zinc compoundsN9825 lbs0 lbs5 lbs
66Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
67Cumene hydroperoxide80-15-92 lbs0 lbs2 lbs
68Nickel7440-02-02 lbs0 lbs2 lbs
69Boron trifluoride7637-07-21 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Allyl alcohol, n-Hexane, Toluene, tert-Butyl alcohol

View the full list of 60 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (60 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-113,984 lbs0 lbs949,687 lbs
2Allyl alcohol107-18-696 lbs0 lbs233,588 lbs
3n-Hexane110-54-3117,508 lbs0 lbs133,445 lbs
4Toluene108-88-314,259 lbs0 lbs116,676 lbs
5tert-Butyl alcohol75-65-0493 lbs0 lbs109,357 lbs
6Nonylphenol EthoxylatesN535131 lbs0 lbs93,342 lbs
7Dimethylamine124-40-3341 lbs0 lbs92,098 lbs
8Molybdenum trioxide1313-27-52,770 lbs482 lbs79,984 lbs
9Ethylene74-85-172,000 lbs0 lbs72,000 lbs
10Ammonia7664-41-754,081 lbs5 lbs55,906 lbs
11Diphenylamine122-39-4105 lbs0 lbs48,731 lbs
121,2,4-Trimethylbenzene95-63-699 lbs0 lbs44,035 lbs
13Xylene (mixed isomers)1330-20-7723 lbs0 lbs39,275 lbs
14Copper7440-50-80 lbs0 lbs27,230 lbs
15Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
16Styrene100-42-5530 lbs0 lbs17,694 lbs
17Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
18Propylene115-07-110,035 lbs0 lbs10,035 lbs
19Nitric acid7697-37-29,490 lbs5 lbs9,500 lbs
20Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
21Dicyclopentadiene77-73-697 lbs0 lbs7,551 lbs
22Vinyl acetate108-05-42,418 lbs0 lbs7,117 lbs
23Phenol108-95-21,875 lbs0 lbs6,506 lbs
24Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 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
28n-Butyl alcohol71-36-31,017 lbs0 lbs4,633 lbs
29Naphthalene91-20-312 lbs0 lbs4,436 lbs
30Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
31Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
32sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
33Ethylene oxide75-21-8490 lbs0 lbs3,190 lbs
34Ethylbenzene100-41-4275 lbs0 lbs2,926 lbs
35Cobalt compoundsN096455 lbs36 lbs2,816 lbs
36Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
37Ethylene glycol107-21-13 lbs0 lbs1,147 lbs
38Acetaldehyde75-07-0494 lbs0 lbs1,132 lbs
39Certain glycol ethersN230961 lbs0 lbs1,125 lbs
40Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
41Benzene71-43-21,090 lbs0 lbs1,090 lbs
42Chlorine7782-50-5961 lbs0 lbs961 lbs
43Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
44Formaldehyde50-00-0154 lbs0 lbs667 lbs
45Propylene oxide75-56-9469 lbs0 lbs633 lbs
46Maleic anhydride108-31-6186 lbs0 lbs592 lbs
47Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
48Methyl methacrylate80-62-6387 lbs0 lbs391 lbs
49Cyclohexane110-82-765 lbs0 lbs356 lbs
50NonylphenolN5301 lbs0 lbs224 lbs
51Acrylic acid79-10-7186 lbs0 lbs192 lbs
52Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
53Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
541,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
55Hydrazine302-01-239 lbs0 lbs39 lbs
56Benzoyl chloride98-88-433 lbs0 lbs33 lbs
57Phosgene75-44-527 lbs0 lbs27 lbs
58Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
59Acrylonitrile107-13-10 lbs0 lbs4 lbs
60Aniline62-53-30 lbs0 lbs2 lbs

Explore More Properties