Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 3203 Piney Brook Dr, La Porte, TX 77571

HCAD #0872750000001
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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
3203 Piney Brook Dr, La Porte, TX 77571
Building Size
2,962sqft
Total structure area from HCAD building records.
Elevation
18.58 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)
28.42 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
294.9 acres
100.0% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$145,902
Based on HCAD building value of $224,465.
Depth-Damage (Neighborhood)
$115,903
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
14.4th percentile
Property Pollution Ranking
High
Higher pollution than 86% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
2.73 millionlbs
Extremely High
417.7x more than typical Houston property
≈ 136 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
2.71 millionlbs
Extremely High
561.7x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
16 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
15
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)2,725,162 lbs2,708,826 lbs16,336 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)290,193 lbs288,918 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 chemicals released near this property (past 10 years):
n-Hexane, Ethylene, Ammonia, Nitric acid, Methanol
View the full list of 46 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(46 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1n-Hexane110-54-31,013,131 lbs0 lbs1,013,131 lbs
2Ethylene74-85-1420,145 lbs0 lbs420,145 lbs
3Ammonia7664-41-7413,789 lbs123 lbs413,932 lbs
4Nitric acid7697-37-2397,654 lbs55 lbs397,734 lbs
5Methanol67-56-1150,115 lbs0 lbs150,115 lbs
6Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
7Molybdenum trioxide1313-27-537,655 lbs3,227 lbs40,897 lbs
8Propylene115-07-136,801 lbs0 lbs36,801 lbs
9Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
10Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
11Cumene98-82-831,173 lbs0 lbs31,173 lbs
12Vinyl acetate108-05-422,306 lbs0 lbs22,306 lbs
13Nickel compoundsN49511,795 lbs1,904 lbs13,714 lbs
14Acetaldehyde75-07-012,256 lbs0 lbs12,256 lbs
15Benzene71-43-210,536 lbs0 lbs10,536 lbs
16Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
17Styrene100-42-57,344 lbs0 lbs7,344 lbs
18Cobalt compoundsN0965,871 lbs886 lbs6,772 lbs
19tert-Butyl alcohol75-65-05,583 lbs0 lbs5,583 lbs
20Nickel And Nickel CompoundsN4954,878 lbs62 lbs4,940 lbs
21Cobalt And Cobalt CompoundsN0964,551 lbs42 lbs4,593 lbs
22Toluene108-88-32,687 lbs0 lbs2,687 lbs
23Xylene (mixed isomers)1330-20-72,454 lbs0 lbs2,454 lbs
24Allyl alcohol107-18-61,569 lbs0 lbs1,569 lbs
25Certain glycol ethersN2301,449 lbs0 lbs1,450 lbs
26Diphenylamine122-39-4997 lbs0 lbs997 lbs
271,2,4-Trimethylbenzene95-63-6995 lbs0 lbs995 lbs
28Ethylene oxide75-21-8791 lbs0 lbs791 lbs
29Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
30Cyclohexane110-82-7377 lbs0 lbs377 lbs
31Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
32Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
33Formaldehyde50-00-046 lbs102 lbs148 lbs
34Lead compoundsN420138 lbs4 lbs142 lbs
35Copper compoundsN100132 lbs6 lbs138 lbs
36Ethylbenzene100-41-494 lbs0 lbs94 lbs
37Chloromethane74-87-351 lbs0 lbs51 lbs
38Chromium7440-47-345 lbs0 lbs45 lbs
39Naphthalene91-20-333 lbs0 lbs33 lbs
40Ethylene glycol107-21-123 lbs0 lbs23 lbs
41Propylene oxide75-56-914 lbs0 lbs14 lbs
42Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
43Cumene hydroperoxide80-15-92 lbs0 lbs2 lbs
44Methyl methacrylate80-62-62 lbs0 lbs2 lbs
45Maleic anhydride108-31-61 lbs0 lbs1 lbs
46n-Butyl alcohol71-36-31 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
n-Hexane, Ethylene, Ammonia, Methanol, Propylene
View the full list of 32 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(32 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1n-Hexane110-54-3116,540 lbs0 lbs116,540 lbs
2Ethylene74-85-172,000 lbs0 lbs72,000 lbs
3Ammonia7664-41-745,360 lbs5 lbs45,365 lbs
4Methanol67-56-111,059 lbs0 lbs11,059 lbs
5Propylene115-07-110,035 lbs0 lbs10,035 lbs
6Nitric acid7697-37-29,488 lbs5 lbs9,493 lbs
7Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
8Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
9Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
10Molybdenum trioxide1313-27-52,770 lbs482 lbs3,252 lbs
11Cumene98-82-82,616 lbs0 lbs2,616 lbs
12Vinyl acetate108-05-42,418 lbs0 lbs2,418 lbs
13Nickel compoundsN4951,017 lbs108 lbs1,125 lbs
14Benzene71-43-21,090 lbs0 lbs1,090 lbs
15Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs622 lbs
16Acetaldehyde75-07-0494 lbs0 lbs494 lbs
17Cobalt compoundsN096455 lbs36 lbs491 lbs
18tert-Butyl alcohol75-65-0467 lbs0 lbs467 lbs
19Styrene100-42-5116 lbs0 lbs116 lbs
20Diphenylamine122-39-4103 lbs0 lbs103 lbs
21Cobalt And Cobalt CompoundsN09682 lbs8 lbs90 lbs
22Nickel And Nickel CompoundsN49582 lbs8 lbs90 lbs
231,2,4-Trimethylbenzene95-63-674 lbs0 lbs74 lbs
24Ethylene oxide75-21-863 lbs0 lbs63 lbs
25Xylene (mixed isomers)1330-20-739 lbs0 lbs39 lbs
26Benzoyl chloride98-88-433 lbs0 lbs33 lbs
27Cyclohexane110-82-724 lbs0 lbs24 lbs
28Lead And Lead CompoundsN42016 lbs1 lbs17 lbs
29Toluene108-88-316 lbs0 lbs16 lbs
30Ethylbenzene100-41-44 lbs0 lbs4 lbs
31Formaldehyde50-00-03 lbs0 lbs3 lbs
32Propylene oxide75-56-91 lbs0 lbs1 lbs
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