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
3811 PECAN CIR LA PORTE 77571
Building Size
2,200 sqft
Total structure area from HCAD building records.
Elevation
18.96 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: 8.96 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 89% 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)
5.96 million lbs
Extremely High
914.2x more than typical Houston property
≈ 298 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)
5.95 million lbs
Extremely High
1233.4x 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)5,964,230 lbs5,947,894 lbs16,336 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)3,747,339 lbs470,456 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 89% 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, Methanol, Ethylene, Ammonia, Vinyl acetate

View the full list of 77 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (77 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,091,770 lbs0 lbs1,091,770 lbs
2Methanol67-56-1823,933 lbs0 lbs830,460 lbs
3Ethylene74-85-1797,190 lbs0 lbs797,190 lbs
4Ammonia7664-41-7756,594 lbs123 lbs756,737 lbs
5Vinyl acetate108-05-4538,659 lbs0 lbs538,659 lbs
6Toluene108-88-3430,898 lbs0 lbs430,898 lbs
7Nitric acid7697-37-2397,668 lbs55 lbs397,748 lbs
8Acrylic acid79-10-7103,139 lbs0 lbs103,139 lbs
9Propylene115-07-197,894 lbs0 lbs97,894 lbs
10Acetaldehyde75-07-093,683 lbs0 lbs93,683 lbs
11Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
12n-Butyl alcohol71-36-380,104 lbs0 lbs80,104 lbs
13Ethylene oxide75-21-858,825 lbs0 lbs58,825 lbs
14Hydroquinone123-31-944,758 lbs0 lbs44,758 lbs
15Molybdenum trioxide1313-27-537,655 lbs3,227 lbs40,897 lbs
16Butyl acrylate141-32-239,999 lbs0 lbs39,999 lbs
17Chlorodifluoromethane (HCFC-22)75-45-638,792 lbs0 lbs38,792 lbs
18Ethyl acrylate140-88-537,048 lbs0 lbs37,048 lbs
19Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
20Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
21Ethylene glycol107-21-132,115 lbs0 lbs32,115 lbs
22Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
23Cumene98-82-831,173 lbs0 lbs31,173 lbs
24Phenol108-95-230,497 lbs0 lbs30,497 lbs
25Methyl acrylate96-33-323,024 lbs0 lbs23,024 lbs
26Xylene (mixed isomers)1330-20-722,722 lbs0 lbs22,722 lbs
27Propylene oxide75-56-918,733 lbs0 lbs18,733 lbs
28Styrene100-42-513,938 lbs0 lbs13,938 lbs
29Nickel compoundsN49511,795 lbs1,905 lbs13,715 lbs
30Certain glycol ethersN23012,060 lbs0 lbs12,061 lbs
31Benzene71-43-210,536 lbs0 lbs10,536 lbs
32Chlorine7782-50-510,430 lbs0 lbs10,430 lbs
33Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
34tert-Butyl alcohol75-65-06,860 lbs0 lbs6,860 lbs
35Cobalt compoundsN0965,871 lbs886 lbs6,772 lbs
36Diphenylamine122-39-45,938 lbs0 lbs5,938 lbs
37Ethylbenzene100-41-45,307 lbs0 lbs5,307 lbs
38Methyl iodide74-88-45,089 lbs0 lbs5,089 lbs
39Nickel And Nickel CompoundsN4954,878 lbs62 lbs4,940 lbs
40Formaldehyde50-00-04,627 lbs102 lbs4,729 lbs
41Cobalt And Cobalt CompoundsN0964,551 lbs42 lbs4,593 lbs
42Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
43Dimethylamine124-40-33,754 lbs0 lbs3,754 lbs
44Allyl alcohol107-18-63,389 lbs0 lbs3,389 lbs
45Methyl methacrylate80-62-63,052 lbs0 lbs3,052 lbs
461,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
47Acrolein107-02-82,268 lbs0 lbs2,268 lbs
48Phosgene75-44-51,958 lbs0 lbs1,958 lbs
49Maleic anhydride108-31-61,577 lbs0 lbs1,577 lbs
50Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
51Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
52sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
53Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
541,2,4-Trimethylbenzene95-63-61,065 lbs0 lbs1,065 lbs
55NonylphenolN5301,013 lbs0 lbs1,013 lbs
56Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
57Cyclohexane110-82-7898 lbs0 lbs898 lbs
58Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
59Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
60Hydrazine302-01-2437 lbs0 lbs437 lbs
61Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
62Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
63Lead compoundsN420138 lbs4 lbs142 lbs
64Copper compoundsN100132 lbs6 lbs138 lbs
65Naphthalene91-20-396 lbs0 lbs96 lbs
66Cyanide compoundsN1065 lbs0 lbs58 lbs
67Chloromethane74-87-351 lbs0 lbs51 lbs
68Chromium7440-47-345 lbs0 lbs45 lbs
69N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
70Phthalic anhydride85-44-913 lbs0 lbs13 lbs
71Zinc compoundsN9825 lbs0 lbs5 lbs
72Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
73Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
74Cumene hydroperoxide80-15-92 lbs0 lbs2 lbs
75Nickel7440-02-02 lbs0 lbs2 lbs
76Formic acid64-18-61 lbs0 lbs1 lbs
77Boron trifluoride7637-07-21 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Ethyl acrylate, Acrylic acid, Ethylene glycol, Allyl alcohol

View the full list of 66 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (66 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-139,405 lbs0 lbs1,010,083 lbs
2Ethyl acrylate140-88-53,477 lbs0 lbs391,250 lbs
3Acrylic acid79-10-711,887 lbs0 lbs339,440 lbs
4Ethylene glycol107-21-15,674 lbs0 lbs293,884 lbs
5Allyl alcohol107-18-696 lbs0 lbs233,588 lbs
6n-Hexane110-54-3118,064 lbs0 lbs134,001 lbs
7Vinyl acetate108-05-421,425 lbs0 lbs133,219 lbs
8Toluene108-88-314,259 lbs0 lbs116,676 lbs
9tert-Butyl alcohol75-65-0493 lbs0 lbs109,357 lbs
10Ethylene74-85-193,866 lbs0 lbs93,866 lbs
11Nonylphenol EthoxylatesN535131 lbs0 lbs93,342 lbs
12Dimethylamine124-40-3341 lbs0 lbs92,098 lbs
13Ammonia7664-41-787,209 lbs5 lbs89,034 lbs
14Molybdenum trioxide1313-27-52,770 lbs482 lbs79,984 lbs
15n-Butyl alcohol71-36-31,639 lbs0 lbs79,534 lbs
16Acetaldehyde75-07-04,028 lbs0 lbs77,712 lbs
17Diphenylamine122-39-4105 lbs0 lbs48,731 lbs
181,2,4-Trimethylbenzene95-63-699 lbs0 lbs44,035 lbs
19Butyl acrylate141-32-22,678 lbs0 lbs43,665 lbs
20Xylene (mixed isomers)1330-20-7723 lbs0 lbs39,275 lbs
21Copper7440-50-80 lbs0 lbs27,230 lbs
22Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
23Styrene100-42-5530 lbs0 lbs17,694 lbs
24Methyl acrylate96-33-32,867 lbs0 lbs17,363 lbs
25Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
26Propylene115-07-112,098 lbs0 lbs12,098 lbs
27Nitric acid7697-37-29,490 lbs5 lbs9,500 lbs
28Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
29Dicyclopentadiene77-73-697 lbs0 lbs7,551 lbs
30Ethylene oxide75-21-81,963 lbs0 lbs6,938 lbs
31Hydroquinone123-31-96,585 lbs0 lbs6,585 lbs
32Phenol108-95-21,875 lbs0 lbs6,506 lbs
33Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
34Cumene98-82-82,616 lbs0 lbs5,324 lbs
35Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
36Naphthalene91-20-312 lbs0 lbs4,436 lbs
37Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
38Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
39sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
40Ethylbenzene100-41-4275 lbs0 lbs2,926 lbs
41Cobalt compoundsN096455 lbs36 lbs2,816 lbs
42Acrolein107-02-81,224 lbs0 lbs1,784 lbs
43Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
44Formaldehyde50-00-0951 lbs0 lbs1,464 lbs
45Certain glycol ethersN2301,033 lbs0 lbs1,196 lbs
46Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
47Benzene71-43-21,090 lbs0 lbs1,090 lbs
48Chlorine7782-50-5961 lbs0 lbs961 lbs
49Methyl iodide74-88-4958 lbs0 lbs958 lbs
50Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
51Propylene oxide75-56-9469 lbs0 lbs633 lbs
52Maleic anhydride108-31-6186 lbs0 lbs592 lbs
53Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
54Methyl methacrylate80-62-6387 lbs0 lbs391 lbs
55Cyclohexane110-82-765 lbs0 lbs356 lbs
56NonylphenolN5301 lbs0 lbs224 lbs
57Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
58Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
591,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
60Hydrazine302-01-239 lbs0 lbs39 lbs
61Benzoyl chloride98-88-433 lbs0 lbs33 lbs
62Phosgene75-44-527 lbs0 lbs27 lbs
63Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
64Acrylonitrile107-13-10 lbs0 lbs4 lbs
65Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
66Aniline62-53-30 lbs0 lbs2 lbs

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