Home > Analysis: 3203 W Piney Brook Dr, La Porte, TX 77571 08/29/2025

📊 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

3203 PINEY BROOK DR LA PORTE 77571

Building Size

2,962 sqft

Total structure area from HCAD building records.

Elevation

18.58 ft

Height above sea level from USGS data.

FEMA Flood Zone

High Risk - 1% annual chance with established base flood elevation

Overall Risk

Moderate

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

Moderate

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)

Property not flooded at current water level. No damage to calculate.

Depth-Damage Estimate (Neighborhood Comparison)

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: 8.58 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.

This property is in a high-risk flood zone. Flood insurance is required for mortgages.
Consider flood mitigation measures like elevated utilities and flood vents.
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)

2.73 million lbs

Extremely High

417.7x more than typical Houston property
≈ 136 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)

2.71 million lbs

Extremely High

561.7x 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

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.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	2,725,268 lbs	2,708,826 lbs	16,336 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	1,037,490 lbs	288,919 lbs	1,275 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

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, Ethylene, Ammonia, Nitric acid, Methanol

View the full list of 46 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (46 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	n-Hexane	110-54-3	1,013,131	0	1,013,131
2	Ethylene	74-85-1	420,145	0	420,145
3	Ammonia	7664-41-7	413,789	123	413,932
4	Nitric acid	7697-37-2	397,654	55	397,734
5	Methanol	67-56-1	150,115	0	150,115
6	Hydroquinone	123-31-9	42,495	0	42,495
7	Molybdenum trioxide	1313-27-5	37,655	3,227	40,897
8	Propylene	115-07-1	36,801	0	36,801
9	Methyl isobutyl ketone	108-10-1	36,313	0	36,313
10	Hydrogen sulfide	7783-06-4	31,678	0	31,678
11	Cumene	98-82-8	31,173	0	31,173
12	Vinyl acetate	108-05-4	22,306	0	22,306
13	Nickel compounds	N495	11,795	1,904	13,714
14	Acetaldehyde	75-07-0	12,256	0	12,256
15	Benzene	71-43-2	10,536	0	10,536
16	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	30	9,885	9,930
17	Styrene	100-42-5	7,344	0	7,344
18	Cobalt compounds	N096	5,871	886	6,772
19	tert-Butyl alcohol	75-65-0	5,583	0	5,583
20	Nickel And Nickel Compounds	N495	4,878	62	4,940
21	Cobalt And Cobalt Compounds	N096	4,551	42	4,593
22	Toluene	108-88-3	2,687	0	2,687
23	Xylene (mixed isomers)	1330-20-7	2,454	0	2,454
24	Allyl alcohol	107-18-6	1,569	0	1,569
25	Certain glycol ethers	N230	1,449	0	1,450
26	Diphenylamine	122-39-4	997	0	997
27	1,2,4-Trimethylbenzene	95-63-6	995	0	995
28	Ethylene oxide	75-21-8	791	0	791
29	Benzoyl chloride	98-88-4	469	0	469
30	Cyclohexane	110-82-7	377	0	377
31	Lead And Lead Compounds	N420	211	10	221
32	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	N040	145	30	175
33	Formaldehyde	50-00-0	46	102	148
34	Lead compounds	N420	138	4	142
35	Copper compounds	N100	132	6	138
36	Ethylbenzene	100-41-4	94	0	94
37	Chloromethane	74-87-3	51	0	51
38	Chromium	7440-47-3	45	0	45
39	Naphthalene	91-20-3	33	0	33
40	Ethylene glycol	107-21-1	23	0	23
41	Propylene oxide	75-56-9	14	0	14
42	Bis(2-chloroethyl) ether	111-44-4	3	0	3
43	Cumene hydroperoxide	80-15-9	2	0	2
44	Methyl methacrylate	80-62-6	2	0	2
45	Maleic anhydride	108-31-6	1	0	1
46	n-Butyl alcohol	71-36-3	1	0	1

Top chemicals released near this property (2024 only):

Methanol, n-Hexane, tert-Butyl alcohol, Molybdenum trioxide, Ethylene

View the full list of 42 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (42 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Methanol	67-56-1	11,059	0	429,347
2	n-Hexane	110-54-3	116,540	0	117,040
3	tert-Butyl alcohol	75-65-0	467	0	93,900
4	Molybdenum trioxide	1313-27-5	2,770	482	79,984
5	Ethylene	74-85-1	72,000	0	72,000
6	Ammonia	7664-41-7	45,360	5	46,960
7	1,2,4-Trimethylbenzene	95-63-6	74	0	44,010
8	Copper	7440-50-8	0	0	27,230
9	Toluene	108-88-3	16	0	14,037
10	Xylene (mixed isomers)	1330-20-7	39	0	13,258
11	Nickel And Nickel Compounds	N495	82	8	12,690
12	Nonylphenol Ethoxylates	N535	0	0	11,809
13	Propylene	115-07-1	10,035	0	10,035
14	Nitric acid	7697-37-2	9,488	5	9,498
15	Nickel compounds	N495	1,017	108	7,851
16	Vinyl acetate	108-05-4	2,418	0	7,117
17	Cumene	98-82-8	2,616	0	5,324
18	Hydroquinone	123-31-9	4,862	0	4,862
19	Naphthalene	91-20-3	0	0	4,065
20	Methyl isobutyl ketone	108-10-1	3,997	0	3,997
21	Hydrogen sulfide	7783-06-4	3,596	0	3,596
22	Cobalt compounds	N096	455	36	2,816
23	Ethylene oxide	75-21-8	63	0	2,763
24	Ethylbenzene	100-41-4	4	0	2,643
25	Styrene	100-42-5	116	0	1,850
26	Cumene hydroperoxide	80-15-9	0	0	1,560
27	Ethylene glycol	107-21-1	0	0	1,138
28	Acetaldehyde	75-07-0	494	0	1,132
29	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	622	1,122
30	Benzene	71-43-2	1,090	0	1,090
31	Cobalt And Cobalt Compounds	N096	82	8	917
32	Formaldehyde	50-00-0	3	0	513
33	Dimethyl phthalate	131-11-3	0	0	406
34	Maleic anhydride	108-31-6	0	0	400
35	Cyclohexane	110-82-7	24	0	315
36	Diphenylamine	122-39-4	103	0	103
37	Lead And Lead Compounds	N420	16	1	68
38	Benzoyl chloride	98-88-4	33	0	33
39	Acrylonitrile	107-13-1	0	0	4
40	Methyl methacrylate	80-62-6	0	0	4
41	Aniline	62-53-3	0	0	2
42	Propylene oxide	75-56-9	1	0	1