Home > Analysis: 830 S 6th St, La Porte, TX 77571

📊 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

830 S 6TH ST LA PORTE 77571

Building Size

1,924 sqft

Total structure area from HCAD building records.

Elevation

15.4 ft

Height above sea level from USGS data.

FEMA Flood Zone

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)

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: 5.4 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 82% 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)

1.36 million lbs

Extremely High

208.2x more than typical Houston property
≈ 68 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)

1.36 million lbs

Extremely High

281.6x 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)

54 lbs

Above Typical

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)	1,358,078 lbs	1,358,024 lbs	54 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	1,087,670 lbs	76,278 lbs	0 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 82% 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):

Toluene, Methanol, Ammonia, Acrylonitrile, n-Butyl alcohol

View the full list of 59 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (59 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Toluene	108-88-3	429,470	0	429,470
2	Methanol	67-56-1	265,251	0	265,251
3	Ammonia	7664-41-7	105,663	0	105,663
4	Acrylonitrile	107-13-1	83,639	0	83,639
5	n-Butyl alcohol	71-36-3	55,640	0	55,640
6	Hydroquinone	123-31-9	42,495	0	42,495
7	Propylene	115-07-1	36,801	0	36,801
8	Methyl isobutyl ketone	108-10-1	36,313	0	36,313
9	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	33,058	0	33,058
10	Cumene	98-82-8	31,096	0	31,096
11	Xylene (mixed isomers)	1330-20-7	30,648	0	30,648
12	Phenol	108-95-2	30,497	0	30,497
13	Ethylene	74-85-1	22,857	0	22,857
14	Vinyl acetate	108-05-4	22,306	0	22,306
15	Propylene oxide	75-56-9	16,752	0	16,752
16	n-Hexane	110-54-3	15,857	0	15,857
17	Styrene	100-42-5	13,938	0	13,938
18	Acetaldehyde	75-07-0	12,256	0	12,256
19	Benzene	71-43-2	10,536	0	10,536
20	Chlorine	7782-50-5	10,430	0	10,430
21	Diphenylamine	122-39-4	5,851	0	5,851
22	Ethylbenzene	100-41-4	5,213	0	5,213
23	Chloroacetic acid	79-11-8	4,175	0	4,175
24	Acrylic acid	79-10-7	3,532	0	3,532
25	Chlorobenzene	108-90-7	3,127	0	3,127
26	Methyl methacrylate	80-62-6	3,050	0	3,050
27	Formaldehyde	50-00-0	2,692	0	2,692
28	1,2-Butylene oxide	106-88-7	2,348	0	2,348
29	Dimethylamine	124-40-3	2,009	0	2,009
30	Phosgene	75-44-5	1,958	0	1,958
31	Allyl alcohol	107-18-6	1,820	0	1,820
32	Acetonitrile	75-05-8	1,765	0	1,765
33	Methyl tert-butyl ether	1634-04-4	1,591	0	1,591
34	Triethylamine	121-44-8	1,515	0	1,515
35	Ethyl chloroformate	541-41-3	1,467	0	1,467
36	Methyl chlorocarbonate	79-22-1	1,449	0	1,449
37	sec-Butyl alcohol	78-92-2	1,434	0	1,434
38	Ethylene oxide	75-21-8	1,431	0	1,431
39	tert-Butyl alcohol	75-65-0	1,254	0	1,254
40	Dicyclopentadiene	77-73-6	1,178	0	1,178
41	Maleic anhydride	108-31-6	965	0	965
42	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	597	0	597
43	N,N-Dimethylformamide	68-12-2	535	0	535
44	Manganese	7439-96-5	511	0	511
45	Hydrazine	302-01-2	437	0	437
46	Dichloromethane	75-09-2	251	0	251
47	1,2,4-Trimethylbenzene	95-63-6	70	0	70
48	Zinc compounds	N982	35	33	68
49	Naphthalene	91-20-3	63	0	63
50	Ethylene glycol	107-21-1	54	0	54
51	Chromium	7440-47-3	45	0	45
52	Cyclohexane	110-82-7	41	0	41
53	Antimony compounds	N010	20	15	35
54	Nitric acid	7697-37-2	14	0	14
55	Phthalic anhydride	85-44-9	13	0	13
56	Antimony And Antimony Compounds	N010	5	5	10
57	Butyl acrylate	141-32-2	5	0	5
58	Boron trifluoride	7637-07-2	1	0	1
59	Nickel compounds	N495	0	1	1

Top chemicals released near this property (2024 only):

Methanol, Allyl alcohol, Toluene, Dimethylamine, Diphenylamine

View the full list of 43 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (43 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Total (lbs/yr)
1	Methanol	67-56-1	11,998	439,237
2	Allyl alcohol	107-18-6	96	233,588
3	Toluene	108-88-3	14,243	102,639
4	Dimethylamine	124-40-3	228	91,985
5	Diphenylamine	122-39-4	105	48,731
6	Xylene (mixed isomers)	1330-20-7	684	26,017
7	Chloroacetic acid	79-11-8	476	20,694
8	Styrene	100-42-5	530	15,960
9	n-Hexane	110-54-3	361	15,774
10	tert-Butyl alcohol	75-65-0	26	15,456
11	Propylene	115-07-1	10,035	10,035
12	Ammonia	7664-41-7	8,690	8,916
13	Dicyclopentadiene	77-73-6	97	7,551
14	Vinyl acetate	108-05-4	2,418	7,117
15	Phenol	108-95-2	1,875	6,506
16	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	6,255	6,255
17	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	0	5,055
18	Hydroquinone	123-31-9	4,862	4,862
19	n-Butyl alcohol	71-36-3	1,017	4,633
20	Methyl isobutyl ketone	108-10-1	3,997	3,997
21	sec-Butyl alcohol	78-92-2	93	3,447
22	Cumene	98-82-8	2,611	2,611
23	Acetaldehyde	75-07-0	494	1,132
24	Benzene	71-43-2	1,090	1,090
25	Chlorine	7782-50-5	961	961
26	Ethylene	74-85-1	679	679
27	Propylene oxide	75-56-9	430	430
28	Ethylene oxide	75-21-8	420	420
29	Methyl methacrylate	80-62-6	387	387
30	Naphthalene	91-20-3	12	371
31	Ethylbenzene	100-41-4	271	283
32	Acrylic acid	79-10-7	186	192
33	Maleic anhydride	108-31-6	178	178
34	Formaldehyde	50-00-0	151	154
35	Ethyl chloroformate	541-41-3	120	120
36	1,2-Butylene oxide	106-88-7	52	52
37	Cyclohexane	110-82-7	41	41
38	Hydrazine	302-01-2	39	39
39	Phosgene	75-44-5	27	27
40	1,2,4-Trimethylbenzene	95-63-6	25	25
41	Methyl chlorocarbonate	79-22-1	13	13
42	Ethylene glycol	107-21-1	3	9
43	Nitric acid	7697-37-2	2	2