Complete Property Analysis

Environmental risk, tax analysis, and property details for 4461 Shady Lake Dr, Seabrook, TX 77586

HCAD #0835860000009

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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

4461 Shady Lake Dr, Seabrook, TX 77586

Building Size

4,536sqft

Total structure area from HCAD building records.

Elevation

9.75 ft

Height above sea level from USGS data.

FEMA Flood Zone

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)

19.59 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)

$160,794

Based on HCAD building value of $247,376.

Depth-Damage (Neighborhood)

$283,134

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.

Special Flood Hazard Area (SFHA): Flood insurance required for federally backed mortgages

Obtain an Elevation Certificate to determine accurate flood insurance premiums

Simulation shows 0.1ft of flooding - mitigation measures recommended

Consider elevating utilities, HVAC systems, and electrical panels above anticipated flood levels

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

14.1th 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)

3.05 millionlbs

Extremely High

467.2x more than typical Houston property

≈ 152 dump trucks of chemicals within 2 miles

Air Pollution (10 Years)

3.03 millionlbs

Extremely High

629.0x more than typical Houston property

Includes fugitive emissions (leaks) and stack emissions (smokestacks).

Water Pollution (10 Years)

15 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)	3,048,195 lbs	3,033,372 lbs	14,823 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	267,050 lbs	264,909 lbs	2,140 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 chemicals released near this property (past 10 years):
tert-Butyl alcohol, Propylene, Methanol, Acrylic acid, Propylene oxide
View the full list of 76 chemicals below.

Chemicals Released (2014-2024, 10-Year Total)(76 chemicals)

#	Chemical	CAS#	Air (lbs/10yr)	Water (lbs/10yr)	Total (lbs/10yr)
1	tert-Butyl alcohol	75-65-0	750,524 lbs	0 lbs	750,524 lbs
2	Propylene	115-07-1	566,101 lbs	0 lbs	566,101 lbs
3	Methanol	67-56-1	319,711 lbs	0 lbs	319,711 lbs
4	Acrylic acid	79-10-7	248,318 lbs	0 lbs	248,318 lbs
5	Propylene oxide	75-56-9	214,778 lbs	0 lbs	214,778 lbs
6	Ethylene	74-85-1	178,679 lbs	0 lbs	178,679 lbs
7	Benzene	71-43-2	129,275 lbs	0 lbs	129,275 lbs
8	Ammonia	7664-41-7	127,548 lbs	0 lbs	127,548 lbs
9	1,3-Butadiene	106-99-0	92,399 lbs	0 lbs	92,399 lbs
10	Ethylbenzene	100-41-4	66,752 lbs	0 lbs	66,752 lbs
11	Toluene	108-88-3	51,603 lbs	0 lbs	51,603 lbs
12	Molybdenum trioxide	1313-27-5	51,068 lbs	0 lbs	51,068 lbs
13	Styrene	100-42-5	47,507 lbs	0 lbs	47,507 lbs
14	Certain glycol ethers	N230	34,364 lbs	0 lbs	34,364 lbs
15	Isoprene	78-79-5	31,965 lbs	0 lbs	31,965 lbs
16	Dicyclopentadiene	77-73-6	20,009 lbs	0 lbs	20,009 lbs
17	Xylene (mixed isomers)	1330-20-7	14,870 lbs	0 lbs	14,870 lbs
18	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	45 lbs	14,147 lbs	14,192 lbs
19	Formaldehyde	50-00-0	7,734 lbs	0 lbs	7,734 lbs
20	n-Butyl alcohol	71-36-3	6,371 lbs	0 lbs	6,371 lbs
21	Naphthalene	91-20-3	6,227 lbs	0 lbs	6,227 lbs
22	Trade Secret	TRD SECRT	5,905 lbs	88 lbs	5,993 lbs
23	Dimethylamine	124-40-3	5,764 lbs	0 lbs	5,764 lbs
24	Maleic anhydride	108-31-6	5,267 lbs	0 lbs	5,267 lbs
25	Formic acid	64-18-6	4,909 lbs	0 lbs	4,909 lbs
26	1,2,4-Trimethylbenzene	95-63-6	4,492 lbs	0 lbs	4,492 lbs
27	Butyl acrylate	141-32-2	4,451 lbs	0 lbs	4,451 lbs
28	Propyleneimine	75-55-8	3,701 lbs	0 lbs	3,701 lbs
29	Vinyl acetate	108-05-4	3,230 lbs	0 lbs	3,230 lbs
30	Vanadium compounds	N770	3,122 lbs	0 lbs	3,137 lbs
31	Acetonitrile	75-05-8	2,760 lbs	0 lbs	2,760 lbs
32	Zinc compounds	N982	2,402 lbs	346 lbs	2,749 lbs
33	Ethylene glycol	107-21-1	2,402 lbs	0 lbs	2,402 lbs
34	Nickel And Nickel Compounds	N495	2,238 lbs	75 lbs	2,313 lbs
35	Acrylonitrile	107-13-1	2,062 lbs	0 lbs	2,062 lbs
36	Nonylphenol	N530	1,974 lbs	0 lbs	1,974 lbs
37	Vanadium (except when contained in an alloy)	7440-62-2	1,691 lbs	0 lbs	1,691 lbs
38	Nickel compounds	N495	1,389 lbs	21 lbs	1,410 lbs
39	Ethylene oxide	75-21-8	1,303 lbs	0 lbs	1,303 lbs
40	Epichlorohydrin	106-89-8	1,042 lbs	0 lbs	1,042 lbs
41	o-Xylene	95-47-6	815 lbs	0 lbs	815 lbs
42	Nonylphenol Ethoxylates	N535	773 lbs	0 lbs	773 lbs
43	Cobalt And Cobalt Compounds	N096	741 lbs	0 lbs	741 lbs
44	Nitric acid	7697-37-2	637 lbs	0 lbs	637 lbs
45	Chlorobenzene	108-90-7	583 lbs	0 lbs	583 lbs
46	Acetaldehyde	75-07-0	504 lbs	0 lbs	504 lbs
47	Cobalt compounds	N096	454 lbs	0 lbs	454 lbs
48	Diethanolamine	111-42-2	414 lbs	0 lbs	414 lbs
49	Acrolein	107-02-8	402 lbs	0 lbs	402 lbs
50	Cumene	98-82-8	384 lbs	0 lbs	384 lbs
51	Hydroquinone	123-31-9	355 lbs	0 lbs	355 lbs
52	Phosphorus (yellow or white)	12185-10-3	250 lbs	0 lbs	250 lbs
53	Benzyl chloride	100-44-7	228 lbs	0 lbs	228 lbs
54	Butyraldehyde	123-72-8	186 lbs	0 lbs	186 lbs
55	Antimony And Antimony Compounds	N010	85 lbs	77 lbs	161 lbs
56	4,4'-Isopropylidenediphenol	80-05-7	141 lbs	0 lbs	141 lbs
57	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	102 lbs	14 lbs	116 lbs
58	Diethyl sulfate	64-67-5	85 lbs	0 lbs	85 lbs
59	Antimony compounds	N010	44 lbs	25 lbs	69 lbs
60	Lead And Lead Compounds	N420	33 lbs	3 lbs	37 lbs
61	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	30 lbs	4 lbs	34 lbs
62	Sodium nitrite	7632-00-0	33 lbs	0 lbs	33 lbs
63	Bis(2-chloroethyl) ether	111-44-4	26 lbs	0 lbs	26 lbs
64	Zinc (fume or dust)	7440-66-6	26 lbs	0 lbs	26 lbs
65	Lead compounds	N420	17 lbs	1 lbs	18 lbs
66	Copper compounds	N100	0 lbs	18 lbs	18 lbs
67	2,4-Dimethylphenol	105-67-9	17 lbs	0 lbs	17 lbs
68	Triethylamine	121-44-8	10 lbs	0 lbs	15 lbs
69	Cadmium compounds	N078	11 lbs	0 lbs	11 lbs
70	Pyridine	110-86-1	10 lbs	0 lbs	10 lbs
71	Allyl alcohol	107-18-6	10 lbs	0 lbs	10 lbs
72	Chromium	7440-47-3	7 lbs	2 lbs	9 lbs
73	Methyl acrylate	96-33-3	6 lbs	0 lbs	6 lbs
74	Lead	7439-92-1	2 lbs	0 lbs	2 lbs
75	Biphenyl	92-52-4	2 lbs	0 lbs	2 lbs
76	N-Methyl-2-pyrrolidone	872-50-4	1 lbs	0 lbs	1 lbs

📋

Top chemicals released near this property (2024 only):
tert-Butyl alcohol, Propylene, Acrylic acid, Ethylene, Propylene oxide
View the full list of 47 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only)(47 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	tert-Butyl alcohol	75-65-0	101,671 lbs	0 lbs	101,671 lbs
2	Propylene	115-07-1	39,502 lbs	0 lbs	39,502 lbs
3	Acrylic acid	79-10-7	20,902 lbs	0 lbs	20,902 lbs
4	Ethylene	74-85-1	16,290 lbs	0 lbs	16,290 lbs
5	Propylene oxide	75-56-9	15,148 lbs	0 lbs	15,148 lbs
6	Ammonia	7664-41-7	12,667 lbs	0 lbs	12,667 lbs
7	Methanol	67-56-1	10,387 lbs	0 lbs	10,387 lbs
8	Isoprene	78-79-5	10,184 lbs	0 lbs	10,184 lbs
9	Benzene	71-43-2	9,442 lbs	0 lbs	9,442 lbs
10	Molybdenum trioxide	1313-27-5	4,957 lbs	0 lbs	4,957 lbs
11	Ethylbenzene	100-41-4	4,042 lbs	0 lbs	4,042 lbs
12	Styrene	100-42-5	3,330 lbs	0 lbs	3,330 lbs
13	1,3-Butadiene	106-99-0	3,263 lbs	0 lbs	3,263 lbs
14	Toluene	108-88-3	2,767 lbs	0 lbs	2,767 lbs
15	Dicyclopentadiene	77-73-6	2,368 lbs	0 lbs	2,368 lbs
16	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0 lbs	2,038 lbs	2,038 lbs
17	Maleic anhydride	108-31-6	1,173 lbs	0 lbs	1,173 lbs
18	Acrylonitrile	107-13-1	883 lbs	0 lbs	883 lbs
19	Butyl acrylate	141-32-2	848 lbs	0 lbs	848 lbs
20	Nitric acid	7697-37-2	633 lbs	0 lbs	633 lbs
21	1,2,4-Trimethylbenzene	95-63-6	599 lbs	0 lbs	599 lbs
22	Xylene (mixed isomers)	1330-20-7	586 lbs	0 lbs	586 lbs
23	Nonylphenol	N530	551 lbs	0 lbs	551 lbs
24	Naphthalene	91-20-3	526 lbs	0 lbs	526 lbs
25	Certain glycol ethers	N230	421 lbs	0 lbs	421 lbs
26	Nickel And Nickel Compounds	N495	341 lbs	26 lbs	367 lbs
27	Formaldehyde	50-00-0	296 lbs	0 lbs	296 lbs
28	Formic acid	64-18-6	175 lbs	0 lbs	175 lbs
29	Vanadium (except when contained in an alloy)	7440-62-2	170 lbs	0 lbs	170 lbs
30	Ethylene oxide	75-21-8	146 lbs	0 lbs	146 lbs
31	Benzyl chloride	100-44-7	119 lbs	0 lbs	119 lbs
32	Chlorobenzene	108-90-7	100 lbs	0 lbs	100 lbs
33	Cobalt And Cobalt Compounds	N096	100 lbs	0 lbs	100 lbs
34	Ethylene glycol	107-21-1	94 lbs	0 lbs	94 lbs
35	Vanadium compounds	N770	67 lbs	0 lbs	67 lbs
36	Trade Secret	TRD SECRT	0 lbs	46 lbs	46 lbs
37	Antimony And Antimony Compounds	N010	26 lbs	19 lbs	45 lbs
38	Propyleneimine	75-55-8	32 lbs	0 lbs	32 lbs
39	Acrolein	107-02-8	28 lbs	0 lbs	28 lbs
40	Acetonitrile	75-05-8	24 lbs	0 lbs	24 lbs
41	Hydroquinone	123-31-9	23 lbs	0 lbs	23 lbs
42	Zinc compounds	N982	13 lbs	10 lbs	22 lbs
43	Zinc (fume or dust)	7440-66-6	9 lbs	0 lbs	9 lbs
44	Chromium	7440-47-3	4 lbs	1 lbs	4 lbs
45	Lead And Lead Compounds	N420	2 lbs	1 lbs	3 lbs
46	Methyl acrylate	96-33-3	2 lbs	0 lbs	2 lbs
47	4,4'-Isopropylidenediphenol	80-05-7	1 lbs	0 lbs	1 lbs