Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 511 Fairway Dr, La Porte, TX 77571

HCAD #1305780020079
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🌍Environmental Assessment

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.

🌊Flood Risk Analysis
FEMA Zone AE
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
511 Fairway Dr, La Porte, TX 77571
Building Size
3,727sqft
Total structure area from HCAD building records.
Elevation
12.81 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Very High
Property flooded at 9.84ft depth.
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 High
Flood Depth
9.84 ft±0.5 ft
Depth of water above ground level.
Water Surface Elevation (WSE)
22.66 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
294.2 acres
99.8% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$194,360
Based on HCAD building value of $299,016.
Depth-Damage (Neighborhood)
$197,171
Based on neighborhood replacement cost.
Analysis Method
COG Combined 5000 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 Flooded
Flood Depth: 9.84 feet
Severity
Severe
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.

#1
Special Flood Hazard Area (SFHA): Flood insurance required for federally backed mortgages
#2
Obtain an Elevation Certificate to determine accurate flood insurance premiums
#3
Property elevation currently above simulated flood level
#4
Maintain flood insurance coverage as required in Special Flood Hazard Areas
#5
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#6
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
14.8th percentile
Property Pollution Ranking
High
Higher pollution than 85% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
2.47 millionlbs
Extremely High
378.8x more than typical Houston property
≈ 124 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
2.47 millionlbs
Extremely High
512.3x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
479lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
18
Industrial facilities within 2 miles
💡
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)2,471,096 lbs2,470,617 lbs479 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)172,108 lbs172,103 lbs5 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 85% 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 chemicals released near this property (past 10 years):
Methanol, Toluene, Ethylene, Ammonia, Vinyl acetate
View the full list of 68 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(68 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-1441,330 lbs55 lbs441,385 lbs
2Toluene108-88-3428,410 lbs0 lbs428,410 lbs
3Ethylene74-85-1346,604 lbs0 lbs346,604 lbs
4Ammonia7664-41-7335,424 lbs0 lbs335,424 lbs
5Vinyl acetate108-05-4142,721 lbs0 lbs142,721 lbs
6Cyclohexane110-82-7102,641 lbs0 lbs102,641 lbs
7Propylene oxide75-56-995,696 lbs0 lbs95,696 lbs
8Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
9n-Butyl alcohol71-36-355,708 lbs0 lbs55,708 lbs
10Hydroquinone123-31-942,495 lbs0 lbs42,495 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)7647-01-035,668 lbs0 lbs35,668 lbs
14Certain glycol ethersN23034,372 lbs0 lbs34,372 lbs
15Cumene98-82-831,111 lbs0 lbs31,111 lbs
16Phenol108-95-230,497 lbs0 lbs30,497 lbs
17Xylene (mixed isomers)1330-20-722,865 lbs0 lbs22,865 lbs
18Styrene100-42-517,954 lbs0 lbs17,954 lbs
19n-Hexane110-54-317,593 lbs0 lbs17,593 lbs
20Isoprene78-79-515,828 lbs0 lbs15,828 lbs
21Acetaldehyde75-07-014,843 lbs0 lbs14,843 lbs
22Chlorine7782-50-512,676 lbs0 lbs12,676 lbs
231,3-Butadiene106-99-012,674 lbs0 lbs12,674 lbs
24Benzene71-43-210,536 lbs0 lbs10,536 lbs
25Formaldehyde50-00-07,835 lbs0 lbs7,835 lbs
26Ethylbenzene100-41-45,941 lbs0 lbs5,941 lbs
27Diphenylamine122-39-45,851 lbs0 lbs5,851 lbs
281,2,4-Trimethylbenzene95-63-64,544 lbs0 lbs4,544 lbs
29Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
30Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
31Methyl methacrylate80-62-63,050 lbs0 lbs3,050 lbs
321,4-Dioxane123-91-12,644 lbs0 lbs2,644 lbs
33Butyl acrylate141-32-22,517 lbs0 lbs2,517 lbs
341,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
35Dimethylamine124-40-32,009 lbs0 lbs2,009 lbs
36NonylphenolN5301,974 lbs0 lbs1,974 lbs
37Phosgene75-44-51,958 lbs0 lbs1,958 lbs
38Allyl alcohol107-18-61,820 lbs0 lbs1,820 lbs
39Naphthalene91-20-31,635 lbs0 lbs1,635 lbs
40Ethylene oxide75-21-81,600 lbs0 lbs1,600 lbs
41Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
42Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
43sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
44Nitric acid7697-37-21,419 lbs0 lbs1,419 lbs
45tert-Butyl alcohol75-65-01,254 lbs0 lbs1,254 lbs
46Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
47Ethylene glycol107-21-11,132 lbs0 lbs1,132 lbs
48Maleic anhydride108-31-6965 lbs0 lbs965 lbs
49Nonylphenol EthoxylatesN535773 lbs0 lbs773 lbs
50Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
51Hydrazine302-01-2437 lbs0 lbs437 lbs
52Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs370 lbs370 lbs
53Benzyl chloride100-44-7228 lbs0 lbs228 lbs
54Diethanolamine111-42-2106 lbs0 lbs106 lbs
55Diethyl sulfate64-67-585 lbs0 lbs85 lbs
56Zinc compoundsN98248 lbs33 lbs81 lbs
57Epichlorohydrin106-89-842 lbs0 lbs42 lbs
58Antimony compoundsN01020 lbs15 lbs35 lbs
59N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
60Acetonitrile75-05-833 lbs0 lbs33 lbs
61Bis(2-chloroethyl) ether111-44-426 lbs0 lbs26 lbs
62Formic acid64-18-621 lbs0 lbs21 lbs
632,4-Dimethylphenol105-67-917 lbs0 lbs17 lbs
64Phthalic anhydride85-44-913 lbs0 lbs13 lbs
65Antimony And Antimony CompoundsN0105 lbs5 lbs10 lbs
661,3-Phenylenediamine108-45-22 lbs0 lbs2 lbs
67Boron trifluoride7637-07-21 lbs0 lbs1 lbs
68Nickel compoundsN4950 lbs1 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, Methanol, Ethylene, Toluene, Vinyl acetate
View the full list of 49 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(49 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-730,863 lbs0 lbs30,863 lbs
2Methanol67-56-127,365 lbs5 lbs27,370 lbs
3Ethylene74-85-124,713 lbs0 lbs24,713 lbs
4Toluene108-88-314,305 lbs0 lbs14,305 lbs
5Vinyl acetate108-05-414,116 lbs0 lbs14,116 lbs
6Propylene115-07-110,035 lbs0 lbs10,035 lbs
7Cyclohexane110-82-78,101 lbs0 lbs8,101 lbs
8Propylene oxide75-56-97,974 lbs0 lbs7,974 lbs
9Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,374 lbs0 lbs6,374 lbs
10Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
11Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
12Cumene98-82-82,611 lbs0 lbs2,611 lbs
13Isoprene78-79-52,125 lbs0 lbs2,125 lbs
14Phenol108-95-21,875 lbs0 lbs1,875 lbs
151,3-Butadiene106-99-01,187 lbs0 lbs1,187 lbs
16Benzene71-43-21,090 lbs0 lbs1,090 lbs
17Xylene (mixed isomers)1330-20-71,047 lbs0 lbs1,047 lbs
18n-Butyl alcohol71-36-31,017 lbs0 lbs1,017 lbs
19Chlorine7782-50-5961 lbs0 lbs961 lbs
20Styrene100-42-5798 lbs0 lbs798 lbs
211,2,4-Trimethylbenzene95-63-6624 lbs0 lbs624 lbs
22NonylphenolN530551 lbs0 lbs551 lbs
23n-Hexane110-54-3521 lbs0 lbs521 lbs
24Acetaldehyde75-07-0496 lbs0 lbs496 lbs
25Chloroacetic acid79-11-8476 lbs0 lbs476 lbs
26Ethylene oxide75-21-8462 lbs0 lbs462 lbs
27Certain glycol ethersN230421 lbs0 lbs421 lbs
28Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
29Ethylbenzene100-41-4365 lbs0 lbs365 lbs
30Formaldehyde50-00-0296 lbs0 lbs296 lbs
31Naphthalene91-20-3235 lbs0 lbs235 lbs
32Dimethylamine124-40-3228 lbs0 lbs228 lbs
33Nitric acid7697-37-2219 lbs0 lbs219 lbs
34Acrylic acid79-10-7186 lbs0 lbs186 lbs
35Maleic anhydride108-31-6178 lbs0 lbs178 lbs
361,4-Dioxane123-91-1126 lbs0 lbs126 lbs
37Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
38Benzyl chloride100-44-7119 lbs0 lbs119 lbs
39Ethylene glycol107-21-1106 lbs0 lbs106 lbs
40Diphenylamine122-39-4105 lbs0 lbs105 lbs
41Dicyclopentadiene77-73-697 lbs0 lbs97 lbs
42Allyl alcohol107-18-696 lbs0 lbs96 lbs
43sec-Butyl alcohol78-92-293 lbs0 lbs93 lbs
441,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
45Hydrazine302-01-239 lbs0 lbs39 lbs
46Phosgene75-44-527 lbs0 lbs27 lbs
47tert-Butyl alcohol75-65-026 lbs0 lbs26 lbs
48Acetonitrile75-05-824 lbs0 lbs24 lbs
49Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
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