Home > Analysis: 425 N Shady Ln, La Porte, TX 77571 12/06/2024

📊 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

425 N SHADY LN LA PORTE 77571

Building Size

3,224 sqft

Total structure area from HCAD building records.

Elevation

9.05 ft

Height above sea level from USGS data.

FEMA Flood Zone

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

Overall Risk

High

Property flooded at 0.9ft depth. Risk based on flood depth at structure.

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

High

Flood Depth

0.95 ft ±0.5 ft

Depth of water above ground 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)

Based on HCAD building value of $232,849 (3,224 sqft). Using U.S. Army Corps of Engineers depth-damage curves.

Depth-Damage Estimate (Neighborhood Comparison)

No neighborhood valuation estimate available. Building exists (3,224 sqft) but no comparable neighborhood data found.

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 Flooded

Flood Depth: 0.95 feet
Severity: Minor

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.
Simulation shows flooding at current water level - review property drainage and consider mitigation.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking

High

Higher pollution than 81% 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)

1.19 million lbs

Extremely High

181.8x more than typical Houston property
≈ 59 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)

1.19 million lbs

Extremely High

246.0x 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)

141 lbs

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)	1,186,408 lbs	1,186,267 lbs	141 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	422,055 lbs	88,407 lbs	46 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 81% 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):

Ammonia, Acrylic acid, Benzene, Methanol, Cyclohexane

View the full list of 45 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (45 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Ammonia	7664-41-7	265,454	0	265,454
2	Acrylic acid	79-10-7	247,770	0	247,770
3	Benzene	71-43-2	115,467	0	115,467
4	Methanol	67-56-1	109,770	0	109,770
5	Cyclohexane	110-82-7	102,600	0	102,600
6	Propylene oxide	75-56-9	78,945	0	78,945
7	Ethylbenzene	100-41-4	66,674	0	66,674
8	Styrene	100-42-5	51,437	0	51,437
9	Certain glycol ethers	N230	34,372	0	34,372
10	Isoprene	78-79-5	15,828	0	15,828
11	Propylene	115-07-1	15,687	0	15,687
12	Ethylene	74-85-1	15,437	0	15,437
13	1,3-Butadiene	106-99-0	14,544	0	14,544
14	Toluene	108-88-3	8,514	0	8,514
15	Formaldehyde	50-00-0	7,593	0	7,593
16	Trade Secret	TRD SECRT	5,905	88	5,993
17	1,2,4-Trimethylbenzene	95-63-6	4,474	0	4,474
18	Butyl acrylate	141-32-2	4,451	0	4,451
19	Vinyl acetate	108-05-4	3,230	0	3,230
20	Xylene (mixed isomers)	1330-20-7	2,663	0	2,663
21	1,4-Dioxane	123-91-1	2,644	0	2,644
22	Formic acid	64-18-6	2,017	0	2,017
23	Acrylonitrile	107-13-1	1,977	0	1,977
24	Nonylphenol	N530	1,974	0	1,974
25	n-Hexane	110-54-3	1,735	0	1,735
26	Naphthalene	91-20-3	1,572	0	1,572
27	Nonylphenol Ethoxylates	N535	773	0	773
28	Ethylene glycol	107-21-1	605	0	605
29	Maleic anhydride	108-31-6	534	0	534
30	Acrolein	107-02-8	402	0	402
31	Hydroquinone	123-31-9	355	0	355
32	Benzyl chloride	100-44-7	228	0	228
33	Ethylene oxide	75-21-8	169	0	169
34	Diethanolamine	111-42-2	106	0	106
35	Diethyl sulfate	64-67-5	85	0	85
36	Zinc compounds	N982	48	33	81
37	n-Butyl alcohol	71-36-3	68	0	68
38	Epichlorohydrin	106-89-8	42	0	42
39	Antimony compounds	N010	20	15	35
40	Acetonitrile	75-05-8	33	0	33
41	Bis(2-chloroethyl) ether	111-44-4	26	0	26
42	2,4-Dimethylphenol	105-67-9	17	0	17
43	Cumene	98-82-8	15	0	15
44	Antimony And Antimony Compounds	N010	5	5	10
45	1,3-Phenylenediamine	108-45-2	2	0	2

Top chemicals released near this property (2024 only):

Acrylic acid, Nickel compounds, Methanol, Xylene (mixed isomers), Cyclohexane

View the full list of 33 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (33 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Acrylic acid	79-10-7	20,841	0	124,064
2	Nickel compounds	N495	0	0	74,741
3	Methanol	67-56-1	1,225	0	46,469
4	Xylene (mixed isomers)	1330-20-7	363	0	39,094
5	Cyclohexane	110-82-7	8,060	0	29,370
6	Ammonia	7664-41-7	23,068	0	23,164
7	Styrene	100-42-5	3,598	0	17,737
8	Ethylbenzene	100-41-4	4,042	0	15,706
9	Benzene	71-43-2	8,393	0	8,949
10	Propylene oxide	75-56-9	7,544	0	7,547
11	Toluene	108-88-3	587	0	4,245
12	Acetonitrile	75-05-8	24	0	4,091
13	Naphthalene	91-20-3	223	0	3,764
14	Ethylene glycol	107-21-1	91	0	2,920
15	Nonylphenol	N530	551	0	2,678
16	Isoprene	78-79-5	2,125	0	2,125
17	Certain glycol ethers	N230	421	0	2,084
18	Propylene	115-07-1	2,003	0	2,003
19	1,2,4-Trimethylbenzene	95-63-6	599	0	1,996
20	n-Hexane	110-54-3	160	0	1,995
21	Formic acid	64-18-6	175	0	1,197
22	1,3-Butadiene	106-99-0	1,187	0	1,187
23	Acrylonitrile	107-13-1	879	0	1,029
24	Formaldehyde	50-00-0	296	0	936
25	Butyl acrylate	141-32-2	848	0	848
26	Ethylene	74-85-1	741	0	741
27	Trade Secret	TRD SECRT	0	46	581
28	Benzyl chloride	100-44-7	119	0	379
29	Hydroquinone	123-31-9	23	0	185
30	1,4-Dioxane	123-91-1	126	0	126
31	Ethylene oxide	75-21-8	42	0	42
32	Acrolein	107-02-8	28	0	38
33	Maleic anhydride	108-31-6	26	0	26