Complete Property Analysis

Environmental risk, tax analysis, and property details for 1003 Oak Leaf Ave, La Porte, TX 77571

HCAD #1000580000001

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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

1003 Oak Leaf Ave, La Porte, TX 77571

Building Size

3,766sqft

Total structure area from HCAD building records.

Elevation

4.32 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)

14.17 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)

Based on HCAD building value of $0.

Depth-Damage (Neighborhood)

$188,782

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 5.5ft of flooding - property owners should evaluate mitigation options

Mitigation measures may include: elevating structure, wet/dry floodproofing, or installing flood vents

Consult with licensed contractors about elevation above Base Flood Elevation (BFE)

Simulation depth of 5.5ft indicates potential for significant interior damage

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

11.4th percentile

Property Pollution Ranking

High

Higher pollution than 89% of Houston homes

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

Industrial Pollution Nearby (10 Years)

5.67 millionlbs

Extremely High

868.4x more than typical Houston property

≈ 283 dump trucks of chemicals within 2 miles

Air Pollution (10 Years)

5.66 millionlbs

Extremely High

1174.7x more than typical Houston property

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

Water Pollution (10 Years)

567lbs

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)	5,665,391 lbs	5,664,824 lbs	567 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	447,009 lbs	446,958 lbs	51 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 89% 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, Methanol, Toluene, Propylene, Ethylene
View the full list of 73 chemicals below.

Chemicals Released (2014-2024, 10-Year Total)(73 chemicals)

#	Chemical	CAS#	Air (lbs/10yr)	Water (lbs/10yr)	Total (lbs/10yr)
1	tert-Butyl alcohol	75-65-0	751,778 lbs	0 lbs	751,778 lbs
2	Methanol	67-56-1	737,196 lbs	55 lbs	737,251 lbs
3	Toluene	108-88-3	732,073 lbs	0 lbs	732,073 lbs
4	Propylene	115-07-1	577,750 lbs	0 lbs	577,750 lbs
5	Ethylene	74-85-1	525,283 lbs	0 lbs	525,283 lbs
6	Ammonia	7664-41-7	353,122 lbs	0 lbs	353,122 lbs
7	Propylene oxide	75-56-9	310,422 lbs	0 lbs	310,422 lbs
8	Acrylic acid	79-10-7	251,302 lbs	0 lbs	251,302 lbs
9	n-Hexane	110-54-3	205,902 lbs	0 lbs	205,902 lbs
10	Vinyl acetate	108-05-4	142,721 lbs	0 lbs	142,721 lbs
11	Benzene	71-43-2	129,270 lbs	0 lbs	129,270 lbs
12	Titanium tetrachloride	7550-45-0	108,195 lbs	0 lbs	108,195 lbs
13	1,3-Butadiene	106-99-0	105,073 lbs	0 lbs	105,073 lbs
14	Cyclohexane	110-82-7	102,641 lbs	0 lbs	102,641 lbs
15	Acrylonitrile	107-13-1	85,616 lbs	0 lbs	85,616 lbs
16	Ethylbenzene	100-41-4	71,965 lbs	0 lbs	71,965 lbs
17	Styrene	100-42-5	58,116 lbs	0 lbs	58,116 lbs
18	n-Butyl alcohol	71-36-3	54,543 lbs	0 lbs	54,543 lbs
19	Isoprene	78-79-5	47,793 lbs	0 lbs	47,793 lbs
20	Ethylene glycol	107-21-1	37,504 lbs	0 lbs	37,504 lbs
21	Xylene (mixed isomers)	1330-20-7	35,137 lbs	0 lbs	35,137 lbs
22	Certain glycol ethers	N230	34,372 lbs	0 lbs	34,372 lbs
23	Phenol	108-95-2	30,497 lbs	0 lbs	30,497 lbs
24	Molybdenum trioxide	1313-27-5	26,754 lbs	0 lbs	26,754 lbs
25	Dicyclopentadiene	77-73-6	21,187 lbs	0 lbs	21,187 lbs
26	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	17,903 lbs	0 lbs	17,903 lbs
27	Acetaldehyde	75-07-0	15,347 lbs	0 lbs	15,347 lbs
28	Formaldehyde	50-00-0	10,409 lbs	0 lbs	10,409 lbs
29	Epichlorohydrin	106-89-8	8,484 lbs	0 lbs	8,484 lbs
30	Dimethylamine	124-40-3	7,773 lbs	0 lbs	7,773 lbs
31	Maleic anhydride	108-31-6	6,232 lbs	0 lbs	6,232 lbs
32	Naphthalene	91-20-3	6,170 lbs	0 lbs	6,170 lbs
33	Trade Secret	TRD SECRT	5,905 lbs	88 lbs	5,993 lbs
34	Dibutyl phthalate	84-74-2	5,792 lbs	0 lbs	5,792 lbs
35	Diphenylamine	122-39-4	4,854 lbs	0 lbs	4,854 lbs
36	Formic acid	64-18-6	4,772 lbs	0 lbs	4,772 lbs
37	1,2,4-Trimethylbenzene	95-63-6	4,544 lbs	0 lbs	4,544 lbs
38	Butyl acrylate	141-32-2	4,456 lbs	0 lbs	4,456 lbs
39	Propyleneimine	75-55-8	3,701 lbs	0 lbs	3,701 lbs
40	Methyl methacrylate	80-62-6	3,050 lbs	0 lbs	3,050 lbs
41	1,4-Dioxane	123-91-1	2,644 lbs	0 lbs	2,644 lbs
42	1,2-Butylene oxide	106-88-7	2,348 lbs	0 lbs	2,348 lbs
43	Chlorine	7782-50-5	2,246 lbs	0 lbs	2,246 lbs
44	Nonylphenol	N530	1,974 lbs	0 lbs	1,974 lbs
45	Allyl alcohol	107-18-6	1,820 lbs	0 lbs	1,820 lbs
46	Ethylene oxide	75-21-8	1,600 lbs	0 lbs	1,600 lbs
47	Nitric acid	7697-37-2	1,419 lbs	0 lbs	1,419 lbs
48	o-Xylene	95-47-6	815 lbs	0 lbs	815 lbs
49	Nonylphenol Ethoxylates	N535	773 lbs	0 lbs	773 lbs
50	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
51	Chlorobenzene	108-90-7	559 lbs	0 lbs	559 lbs
52	Hydrazine	302-01-2	437 lbs	0 lbs	437 lbs
53	Acrolein	107-02-8	402 lbs	0 lbs	402 lbs
54	Cumene	98-82-8	384 lbs	0 lbs	384 lbs
55	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0 lbs	370 lbs	370 lbs
56	Hydroquinone	123-31-9	355 lbs	0 lbs	355 lbs
57	Benzyl chloride	100-44-7	228 lbs	0 lbs	228 lbs
58	Di(2-ethylhexyl) phthalate	117-81-7	222 lbs	0 lbs	222 lbs
59	Diethanolamine	111-42-2	106 lbs	0 lbs	106 lbs
60	Diethyl sulfate	64-67-5	85 lbs	0 lbs	85 lbs
61	Zinc compounds	N982	48 lbs	33 lbs	81 lbs
62	Phthalic anhydride	85-44-9	40 lbs	0 lbs	40 lbs
63	Antimony compounds	N010	20 lbs	15 lbs	35 lbs
64	Acetonitrile	75-05-8	33 lbs	0 lbs	33 lbs
65	Bis(2-chloroethyl) ether	111-44-4	26 lbs	0 lbs	26 lbs
66	2,4-Dimethylphenol	105-67-9	17 lbs	0 lbs	17 lbs
67	Triethylamine	121-44-8	10 lbs	0 lbs	15 lbs
68	Antimony And Antimony Compounds	N010	5 lbs	5 lbs	10 lbs
69	1,3-Phenylenediamine	108-45-2	2 lbs	0 lbs	2 lbs
70	Lead	7439-92-1	2 lbs	0 lbs	2 lbs
71	Biphenyl	92-52-4	2 lbs	0 lbs	2 lbs
72	Boron trifluoride	7637-07-2	1 lbs	0 lbs	1 lbs
73	Nickel compounds	N495	0 lbs	1 lbs	1 lbs

📋

Top chemicals released near this property (2024 only):
tert-Butyl alcohol, Toluene, Ethylene, Propylene, Methanol
View the full list of 54 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only)(54 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	tert-Butyl alcohol	75-65-0	101,697 lbs	0 lbs	101,697 lbs
2	Toluene	108-88-3	41,162 lbs	0 lbs	41,162 lbs
3	Ethylene	74-85-1	41,003 lbs	0 lbs	41,003 lbs
4	Propylene	115-07-1	40,450 lbs	0 lbs	40,450 lbs
5	Methanol	67-56-1	36,168 lbs	5 lbs	36,173 lbs
6	Ammonia	7664-41-7	30,863 lbs	0 lbs	30,863 lbs
7	Propylene oxide	75-56-9	23,121 lbs	0 lbs	23,121 lbs
8	Acrylic acid	79-10-7	21,027 lbs	0 lbs	21,027 lbs
9	n-Hexane	110-54-3	19,447 lbs	0 lbs	19,447 lbs
10	Vinyl acetate	108-05-4	14,116 lbs	0 lbs	14,116 lbs
11	Isoprene	78-79-5	12,309 lbs	0 lbs	12,309 lbs
12	Titanium tetrachloride	7550-45-0	10,755 lbs	0 lbs	10,755 lbs
13	Benzene	71-43-2	9,442 lbs	0 lbs	9,442 lbs
14	Cyclohexane	110-82-7	8,101 lbs	0 lbs	8,101 lbs
15	1,3-Butadiene	106-99-0	4,450 lbs	0 lbs	4,450 lbs
16	Ethylbenzene	100-41-4	4,313 lbs	0 lbs	4,313 lbs
17	Styrene	100-42-5	4,012 lbs	0 lbs	4,012 lbs
18	Ethylene glycol	107-21-1	3,258 lbs	0 lbs	3,258 lbs
19	Molybdenum trioxide	1313-27-5	3,114 lbs	0 lbs	3,114 lbs
20	Dicyclopentadiene	77-73-6	2,465 lbs	0 lbs	2,465 lbs
21	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	1,959 lbs	0 lbs	1,959 lbs
22	Phenol	108-95-2	1,875 lbs	0 lbs	1,875 lbs
23	Maleic anhydride	108-31-6	1,351 lbs	0 lbs	1,351 lbs
24	Xylene (mixed isomers)	1330-20-7	1,270 lbs	0 lbs	1,270 lbs
25	n-Butyl alcohol	71-36-3	942 lbs	0 lbs	942 lbs
26	Acrylonitrile	107-13-1	879 lbs	0 lbs	879 lbs
27	Butyl acrylate	141-32-2	848 lbs	0 lbs	848 lbs
28	Epichlorohydrin	106-89-8	643 lbs	0 lbs	643 lbs
29	1,2,4-Trimethylbenzene	95-63-6	624 lbs	0 lbs	624 lbs
30	Nonylphenol	N530	551 lbs	0 lbs	551 lbs
31	Naphthalene	91-20-3	538 lbs	0 lbs	538 lbs
32	Acetaldehyde	75-07-0	496 lbs	0 lbs	496 lbs
33	Dibutyl phthalate	84-74-2	496 lbs	0 lbs	496 lbs
34	Ethylene oxide	75-21-8	462 lbs	0 lbs	462 lbs
35	Formaldehyde	50-00-0	447 lbs	0 lbs	447 lbs
36	Certain glycol ethers	N230	421 lbs	0 lbs	421 lbs
37	Methyl methacrylate	80-62-6	387 lbs	0 lbs	387 lbs
38	Dimethylamine	124-40-3	228 lbs	0 lbs	228 lbs
39	Di(2-ethylhexyl) phthalate	117-81-7	222 lbs	0 lbs	222 lbs
40	Nitric acid	7697-37-2	219 lbs	0 lbs	219 lbs
41	Formic acid	64-18-6	175 lbs	0 lbs	175 lbs
42	1,4-Dioxane	123-91-1	126 lbs	0 lbs	126 lbs
43	Benzyl chloride	100-44-7	119 lbs	0 lbs	119 lbs
44	Chlorobenzene	108-90-7	100 lbs	0 lbs	100 lbs
45	Allyl alcohol	107-18-6	96 lbs	0 lbs	96 lbs
46	1,2-Butylene oxide	106-88-7	52 lbs	0 lbs	52 lbs
47	Trade Secret	TRD SECRT	0 lbs	46 lbs	46 lbs
48	Hydrazine	302-01-2	39 lbs	0 lbs	39 lbs
49	Propyleneimine	75-55-8	32 lbs	0 lbs	32 lbs
50	Acrolein	107-02-8	28 lbs	0 lbs	28 lbs
51	Acetonitrile	75-05-8	24 lbs	0 lbs	24 lbs
52	Hydroquinone	123-31-9	23 lbs	0 lbs	23 lbs
53	Phthalic anhydride	85-44-9	14 lbs	0 lbs	14 lbs
54	Diphenylamine	122-39-4	2 lbs	0 lbs	2 lbs