Complete Property Analysis

Environmental risk, tax analysis, and property details for 10422 Shell Rock Rd, La Porte, Tx 77571

HCAD #0951470000006

🧭Jump to Section

🌍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 X

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

10422 Shell Rock Rd, La Porte, Tx 77571

Building Size

2,495sqft

Total structure area from HCAD building records.

Elevation

20.18 ft

Height above sea level from USGS data.

FEMA Flood Zone

Moderate to Low Risk - Outside 500-year floodplain

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)

30.02 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)

$107,117

Based on HCAD building value of $164,796.

Depth-Damage (Neighborhood)

$115,046

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.

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.

Minimal flood hazard area - property outside mapped high-risk zones

Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas

Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries

Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information

🏭Industrial Pollution Exposure

12.2th percentile

Property Pollution Ranking

High

Higher pollution than 88% of Houston homes

Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.

Industrial Pollution Nearby (10 Years)

4.29 millionlbs

Extremely High

657.7x more than typical Houston property

≈ 215 dump trucks of chemicals within 2 miles

Air Pollution (10 Years)

4.27 millionlbs

Extremely High

886.4x 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

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.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	4,290,802 lbs	4,274,466 lbs	16,336 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	366,220 lbs	364,945 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 88% 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, Toluene, Nitric acid
View the full list of 64 chemicals below.

Chemicals Released (2014-2024, 10-Year Total)(64 chemicals)

#	Chemical	CAS#	Air (lbs/10yr)	Water (lbs/10yr)	Total (lbs/10yr)
1	n-Hexane	110-54-3	1,036,155 lbs	0 lbs	1,036,155 lbs
2	Ethylene	74-85-1	746,027 lbs	0 lbs	746,027 lbs
3	Ammonia	7664-41-7	505,248 lbs	123 lbs	505,391 lbs
4	Toluene	108-88-3	437,798 lbs	0 lbs	437,798 lbs
5	Nitric acid	7697-37-2	397,668 lbs	55 lbs	397,748 lbs
6	Methanol	67-56-1	276,657 lbs	0 lbs	283,184 lbs
7	Ethylene glycol	107-21-1	104,917 lbs	0 lbs	104,917 lbs
8	Ethylene oxide	75-21-8	100,358 lbs	0 lbs	100,358 lbs
9	Acrylonitrile	107-13-1	83,639 lbs	0 lbs	83,639 lbs
10	n-Butyl alcohol	71-36-3	67,144 lbs	0 lbs	67,144 lbs
11	Certain glycol ethers	N230	46,549 lbs	0 lbs	46,550 lbs
12	Hydroquinone	123-31-9	42,495 lbs	0 lbs	42,495 lbs
13	Molybdenum trioxide	1313-27-5	37,655 lbs	3,227 lbs	40,897 lbs
14	Acetaldehyde	75-07-0	37,584 lbs	0 lbs	37,584 lbs
15	Propylene	115-07-1	36,801 lbs	0 lbs	36,801 lbs
16	Methyl isobutyl ketone	108-10-1	36,313 lbs	0 lbs	36,313 lbs
17	Hydrogen sulfide	7783-06-4	31,678 lbs	0 lbs	31,678 lbs
18	Cumene	98-82-8	31,173 lbs	0 lbs	31,173 lbs
19	Phenol	108-95-2	30,497 lbs	0 lbs	30,497 lbs
20	Xylene (mixed isomers)	1330-20-7	22,722 lbs	0 lbs	22,722 lbs
21	Vinyl acetate	108-05-4	22,306 lbs	0 lbs	22,306 lbs
22	Propylene oxide	75-56-9	18,733 lbs	0 lbs	18,733 lbs
23	Styrene	100-42-5	13,938 lbs	0 lbs	13,938 lbs
24	Nickel compounds	N495	11,795 lbs	1,905 lbs	13,715 lbs
25	2-Methoxyethanol	109-86-4	11,669 lbs	0 lbs	11,669 lbs
26	Benzene	71-43-2	10,536 lbs	0 lbs	10,536 lbs
27	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	30 lbs	9,885 lbs	9,930 lbs
28	Chloroethane	75-00-3	9,070 lbs	0 lbs	9,070 lbs
29	tert-Butyl alcohol	75-65-0	6,860 lbs	0 lbs	6,860 lbs
30	Cobalt compounds	N096	5,871 lbs	886 lbs	6,772 lbs
31	2-Ethoxyethanol	110-80-5	6,044 lbs	0 lbs	6,044 lbs
32	Diphenylamine	122-39-4	5,938 lbs	0 lbs	5,938 lbs
33	Ethylbenzene	100-41-4	5,307 lbs	0 lbs	5,307 lbs
34	Nickel And Nickel Compounds	N495	4,878 lbs	62 lbs	4,940 lbs
35	Cobalt And Cobalt Compounds	N096	4,551 lbs	42 lbs	4,593 lbs
36	Dimethylamine	124-40-3	3,754 lbs	0 lbs	3,754 lbs
37	Acrylic acid	79-10-7	3,532 lbs	0 lbs	3,532 lbs
38	Allyl alcohol	107-18-6	3,389 lbs	0 lbs	3,389 lbs
39	Methyl methacrylate	80-62-6	3,052 lbs	0 lbs	3,052 lbs
40	Formaldehyde	50-00-0	2,738 lbs	102 lbs	2,840 lbs
41	1,2-Butylene oxide	106-88-7	2,348 lbs	0 lbs	2,348 lbs
42	Maleic anhydride	108-31-6	1,577 lbs	0 lbs	1,577 lbs
43	Dicyclopentadiene	77-73-6	1,178 lbs	0 lbs	1,178 lbs
44	1,2,4-Trimethylbenzene	95-63-6	1,065 lbs	0 lbs	1,065 lbs
45	Nonylphenol	N530	1,013 lbs	0 lbs	1,013 lbs
46	Nonylphenol Ethoxylates	N535	1,008 lbs	0 lbs	1,008 lbs
47	Cyclohexane	110-82-7	898 lbs	0 lbs	898 lbs
48	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	597 lbs	0 lbs	597 lbs
49	Benzoyl chloride	98-88-4	469 lbs	0 lbs	469 lbs
50	Hydrazine	302-01-2	437 lbs	0 lbs	437 lbs
51	Lead And Lead Compounds	N420	211 lbs	10 lbs	221 lbs
52	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	N040	145 lbs	30 lbs	175 lbs
53	Lead compounds	N420	138 lbs	4 lbs	142 lbs
54	Copper compounds	N100	132 lbs	6 lbs	138 lbs
55	Naphthalene	91-20-3	96 lbs	0 lbs	96 lbs
56	Cyanide compounds	N106	5 lbs	0 lbs	58 lbs
57	Chloromethane	74-87-3	51 lbs	0 lbs	51 lbs
58	Phthalic anhydride	85-44-9	13 lbs	0 lbs	13 lbs
59	Butyl acrylate	141-32-2	5 lbs	0 lbs	5 lbs
60	Zinc compounds	N982	5 lbs	0 lbs	5 lbs
61	Bis(2-chloroethyl) ether	111-44-4	3 lbs	0 lbs	3 lbs
62	Cumene hydroperoxide	80-15-9	2 lbs	0 lbs	2 lbs
63	Nickel	7440-02-0	2 lbs	0 lbs	2 lbs
64	Boron trifluoride	7637-07-2	1 lbs	0 lbs	1 lbs

📋

Top chemicals released near this property (2024 only):
n-Hexane, Ethylene, Ammonia, Methanol, Toluene
View the full list of 50 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only)(50 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	n-Hexane	110-54-3	117,508 lbs	0 lbs	117,508 lbs
2	Ethylene	74-85-1	90,976 lbs	0 lbs	90,976 lbs
3	Ammonia	7664-41-7	54,081 lbs	5 lbs	54,086 lbs
4	Methanol	67-56-1	16,274 lbs	0 lbs	16,274 lbs
5	Toluene	108-88-3	14,538 lbs	0 lbs	14,538 lbs
6	Propylene	115-07-1	10,035 lbs	0 lbs	10,035 lbs
7	Nitric acid	7697-37-2	9,490 lbs	5 lbs	9,495 lbs
8	Ethylene oxide	75-21-8	8,025 lbs	0 lbs	8,025 lbs
9	Hydroquinone	123-31-9	4,862 lbs	0 lbs	4,862 lbs
10	Methyl isobutyl ketone	108-10-1	3,997 lbs	0 lbs	3,997 lbs
11	Hydrogen sulfide	7783-06-4	3,596 lbs	0 lbs	3,596 lbs
12	Certain glycol ethers	N230	3,460 lbs	0 lbs	3,460 lbs
13	Chloroethane	75-00-3	3,424 lbs	0 lbs	3,424 lbs
14	Ethylene glycol	107-21-1	3,270 lbs	0 lbs	3,270 lbs
15	Molybdenum trioxide	1313-27-5	2,770 lbs	482 lbs	3,252 lbs
16	Cumene	98-82-8	2,616 lbs	0 lbs	2,616 lbs
17	Vinyl acetate	108-05-4	2,418 lbs	0 lbs	2,418 lbs
18	n-Butyl alcohol	71-36-3	2,213 lbs	0 lbs	2,213 lbs
19	Phenol	108-95-2	1,875 lbs	0 lbs	1,875 lbs
20	Nickel compounds	N495	1,017 lbs	108 lbs	1,125 lbs
21	Benzene	71-43-2	1,090 lbs	0 lbs	1,090 lbs
22	2-Methoxyethanol	109-86-4	1,027 lbs	0 lbs	1,027 lbs
23	Acetaldehyde	75-07-0	869 lbs	0 lbs	869 lbs
24	Xylene (mixed isomers)	1330-20-7	723 lbs	0 lbs	723 lbs
25	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0 lbs	622 lbs	622 lbs
26	Styrene	100-42-5	530 lbs	0 lbs	530 lbs
27	tert-Butyl alcohol	75-65-0	493 lbs	0 lbs	493 lbs
28	Cobalt compounds	N096	455 lbs	36 lbs	491 lbs
29	Propylene oxide	75-56-9	469 lbs	0 lbs	469 lbs
30	2-Ethoxyethanol	110-80-5	407 lbs	0 lbs	407 lbs
31	Methyl methacrylate	80-62-6	387 lbs	0 lbs	387 lbs
32	Dimethylamine	124-40-3	341 lbs	0 lbs	341 lbs
33	Ethylbenzene	100-41-4	275 lbs	0 lbs	275 lbs
34	Maleic anhydride	108-31-6	186 lbs	0 lbs	186 lbs
35	Acrylic acid	79-10-7	186 lbs	0 lbs	186 lbs
36	Formaldehyde	50-00-0	154 lbs	0 lbs	154 lbs
37	Nonylphenol Ethoxylates	N535	131 lbs	0 lbs	131 lbs
38	Diphenylamine	122-39-4	105 lbs	0 lbs	105 lbs
39	1,2,4-Trimethylbenzene	95-63-6	99 lbs	0 lbs	99 lbs
40	Dicyclopentadiene	77-73-6	97 lbs	0 lbs	97 lbs
41	Allyl alcohol	107-18-6	96 lbs	0 lbs	96 lbs
42	Cobalt And Cobalt Compounds	N096	82 lbs	8 lbs	90 lbs
43	Nickel And Nickel Compounds	N495	82 lbs	8 lbs	90 lbs
44	Cyclohexane	110-82-7	65 lbs	0 lbs	65 lbs
45	1,2-Butylene oxide	106-88-7	52 lbs	0 lbs	52 lbs
46	Hydrazine	302-01-2	39 lbs	0 lbs	39 lbs
47	Benzoyl chloride	98-88-4	33 lbs	0 lbs	33 lbs
48	Lead And Lead Compounds	N420	16 lbs	1 lbs	17 lbs
49	Naphthalene	91-20-3	12 lbs	0 lbs	12 lbs
50	Nonylphenol	N530	1 lbs	0 lbs	1 lbs