Complete Property Analysis

Environmental risk, tax analysis, and property details for 5757 Underwood Rd, Pasadena, TX 77507

HCAD #0410030000150

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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

5757 Underwood Rd, Pasadena, TX 77507

Elevation

14.83 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)

24.67 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)

Vacant lot (no building data).

Depth-Damage (Neighborhood)

Vacant lot (no building data).

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

Property elevation currently above simulated flood level

Maintain flood insurance coverage as required in Special Flood Hazard 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

11.5th 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)

5.34 millionlbs

Extremely High

817.8x more than typical Houston property

≈ 267 dump trucks of chemicals within 2 miles

Air Pollution (10 Years)

5.3 millionlbs

Extremely High

1100.0x more than typical Houston property

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

Water Pollution (10 Years)

31 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)	5,335,304 lbs	5,304,456 lbs	30,848 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	390,013 lbs	386,674 lbs	3,339 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):
Ammonia, Ethylene, Methanol, Vinyl acetate, Nitric acid
View the full list of 86 chemicals below.

Chemicals Released (2014-2024, 10-Year Total)(86 chemicals)

#	Chemical	CAS#	Air (lbs/10yr)	Water (lbs/10yr)	Total (lbs/10yr)
1	Ammonia	7664-41-7	766,294 lbs	123 lbs	766,437 lbs
2	Ethylene	74-85-1	719,750 lbs	0 lbs	719,750 lbs
3	Methanol	67-56-1	606,060 lbs	0 lbs	612,587 lbs
4	Vinyl acetate	108-05-4	516,353 lbs	0 lbs	516,353 lbs
5	Nitric acid	7697-37-2	398,291 lbs	55 lbs	398,371 lbs
6	n-Hexane	110-54-3	390,514 lbs	0 lbs	390,514 lbs
7	Toluene	108-88-3	261,850 lbs	0 lbs	261,850 lbs
8	Ethylene glycol	107-21-1	180,662 lbs	0 lbs	180,662 lbs
9	Ethylene oxide	75-21-8	157,519 lbs	0 lbs	157,519 lbs
10	Methyl methacrylate	80-62-6	116,978 lbs	0 lbs	117,250 lbs
11	Butyl acrylate	141-32-2	112,617 lbs	0 lbs	112,617 lbs
12	Titanium tetrachloride	7550-45-0	108,195 lbs	0 lbs	108,195 lbs
13	Acetaldehyde	75-07-0	107,268 lbs	0 lbs	107,268 lbs
14	Acrylic acid	79-10-7	99,607 lbs	0 lbs	99,607 lbs
15	N,N-Dimethylformamide	68-12-2	86,962 lbs	0 lbs	86,962 lbs
16	Propylene	115-07-1	72,744 lbs	0 lbs	72,744 lbs
17	Styrene	100-42-5	72,162 lbs	0 lbs	72,293 lbs
18	Molybdenum trioxide	1313-27-5	61,969 lbs	3,227 lbs	65,211 lbs
19	1,3-Butadiene	106-99-0	59,009 lbs	0 lbs	59,009 lbs
20	n-Butyl alcohol	71-36-3	55,666 lbs	0 lbs	55,666 lbs
21	Certain glycol ethers	N230	49,151 lbs	0 lbs	49,152 lbs
22	Chlorodifluoromethane (HCFC-22)	75-45-6	38,792 lbs	0 lbs	38,792 lbs
23	Ethyl acrylate	140-88-5	37,097 lbs	0 lbs	37,097 lbs
24	Hydrogen sulfide	7783-06-4	31,678 lbs	0 lbs	31,678 lbs
25	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	75 lbs	24,032 lbs	24,122 lbs
26	Methyl acrylate	96-33-3	23,024 lbs	0 lbs	23,024 lbs
27	tert-Butyl alcohol	75-65-0	20,711 lbs	0 lbs	20,711 lbs
28	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	15,293 lbs	0 lbs	15,293 lbs
29	Chlorine	7782-50-5	15,132 lbs	0 lbs	15,132 lbs
30	Nickel compounds	N495	13,184 lbs	1,925 lbs	15,124 lbs
31	2-Methoxyethanol	109-86-4	11,669 lbs	0 lbs	11,669 lbs
32	Chloroethane	75-00-3	9,070 lbs	0 lbs	9,070 lbs
33	Epichlorohydrin	106-89-8	7,442 lbs	0 lbs	7,442 lbs
34	Nickel And Nickel Compounds	N495	7,116 lbs	137 lbs	7,253 lbs
35	Cobalt compounds	N096	6,325 lbs	886 lbs	7,226 lbs
36	2-Ethoxyethanol	110-80-5	6,044 lbs	0 lbs	6,044 lbs
37	Dibutyl phthalate	84-74-2	5,792 lbs	0 lbs	5,792 lbs
38	Maleic anhydride	108-31-6	5,651 lbs	0 lbs	5,651 lbs
39	Cobalt And Cobalt Compounds	N096	5,292 lbs	42 lbs	5,334 lbs
40	Methyl iodide	74-88-4	5,089 lbs	0 lbs	5,089 lbs
41	Cumene	98-82-8	5,060 lbs	0 lbs	5,060 lbs
42	Isoprene	78-79-5	4,016 lbs	0 lbs	4,016 lbs
43	Vanadium compounds	N770	3,122 lbs	0 lbs	3,137 lbs
44	Propylene oxide	75-56-9	2,606 lbs	0 lbs	2,606 lbs
45	Zinc compounds	N982	2,339 lbs	233 lbs	2,572 lbs
46	Xylene (mixed isomers)	1330-20-7	2,465 lbs	0 lbs	2,465 lbs
47	Acrolein	107-02-8	2,268 lbs	0 lbs	2,268 lbs
48	Hydroquinone	123-31-9	2,263 lbs	0 lbs	2,263 lbs
49	Formaldehyde	50-00-0	1,975 lbs	102 lbs	2,077 lbs
50	Dimethylamine	124-40-3	1,745 lbs	0 lbs	1,745 lbs
51	Vanadium (except when contained in an alloy)	7440-62-2	1,691 lbs	0 lbs	1,691 lbs
52	Allyl alcohol	107-18-6	1,569 lbs	0 lbs	1,569 lbs
53	Allyl chloride	107-05-1	1,277 lbs	0 lbs	1,277 lbs
54	1,2,4-Trimethylbenzene	95-63-6	1,255 lbs	0 lbs	1,255 lbs
55	Nonylphenol	N530	1,013 lbs	0 lbs	1,013 lbs
56	Nonylphenol Ethoxylates	N535	1,008 lbs	0 lbs	1,008 lbs
57	Cyclohexane	110-82-7	857 lbs	0 lbs	857 lbs
58	Acrylonitrile	107-13-1	775 lbs	0 lbs	775 lbs
59	Benzoyl chloride	98-88-4	469 lbs	0 lbs	469 lbs
60	Diethanolamine	111-42-2	308 lbs	0 lbs	308 lbs
61	Naphthalene	91-20-3	267 lbs	0 lbs	267 lbs
62	Phosphorus (yellow or white)	12185-10-3	250 lbs	0 lbs	250 lbs
63	Lead And Lead Compounds	N420	213 lbs	10 lbs	222 lbs
64	Di(2-ethylhexyl) phthalate	117-81-7	222 lbs	0 lbs	222 lbs
65	Barium compounds (except for barium sulfate (CAS No. 7727-43-7))	N040	145 lbs	30 lbs	175 lbs
66	Copper compounds	N100	132 lbs	24 lbs	156 lbs
67	Bifenthrin	82657-04-3	149 lbs	0 lbs	149 lbs
68	Lead compounds	N420	140 lbs	4 lbs	144 lbs
69	4,4'-Isopropylidenediphenol	80-05-7	141 lbs	0 lbs	141 lbs
70	Formic acid	64-18-6	138 lbs	0 lbs	138 lbs
71	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	101 lbs	14 lbs	115 lbs
72	Ethylbenzene	100-41-4	94 lbs	0 lbs	94 lbs
73	Diphenylamine	122-39-4	87 lbs	0 lbs	87 lbs
74	Cyanide compounds	N106	5 lbs	0 lbs	58 lbs
75	Chloromethane	74-87-3	51 lbs	0 lbs	51 lbs
76	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	29 lbs	4 lbs	33 lbs
77	Sodium nitrite	7632-00-0	33 lbs	0 lbs	33 lbs
78	Phthalic anhydride	85-44-9	27 lbs	0 lbs	27 lbs
79	Cumene hydroperoxide	80-15-9	26 lbs	0 lbs	26 lbs
80	Oxyfluorfen	42874-03-3	10 lbs	0 lbs	10 lbs
81	4,4'-Diaminodiphenyl ether	101-80-4	6 lbs	0 lbs	6 lbs
82	Benzene	71-43-2	5 lbs	0 lbs	5 lbs
83	Bis(2-chloroethyl) ether	111-44-4	3 lbs	0 lbs	3 lbs
84	Manganese And Manganese Compounds	N450	3 lbs	0 lbs	3 lbs
85	Nickel	7440-02-0	2 lbs	0 lbs	2 lbs
86	N-Methyl-2-pyrrolidone	872-50-4	1 lbs	0 lbs	1 lbs

📋

Top chemicals released near this property (2024 only):
Ammonia, Ethylene, Methanol, n-Hexane, Toluene
View the full list of 60 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only)(60 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Ammonia	7664-41-7	84,685 lbs	5 lbs	84,690 lbs
2	Ethylene	74-85-1	57,665 lbs	0 lbs	57,665 lbs
3	Methanol	67-56-1	31,109 lbs	0 lbs	31,109 lbs
4	n-Hexane	110-54-3	26,437 lbs	0 lbs	26,437 lbs
5	Toluene	108-88-3	24,447 lbs	0 lbs	24,447 lbs
6	Vinyl acetate	108-05-4	19,007 lbs	0 lbs	19,007 lbs
7	Methyl methacrylate	80-62-6	18,415 lbs	0 lbs	18,415 lbs
8	Ethylene glycol	107-21-1	17,583 lbs	0 lbs	17,583 lbs
9	Acrylic acid	79-10-7	11,701 lbs	0 lbs	11,701 lbs
10	Ethylene oxide	75-21-8	11,282 lbs	0 lbs	11,282 lbs
11	Titanium tetrachloride	7550-45-0	10,755 lbs	0 lbs	10,755 lbs
12	Nitric acid	7697-37-2	10,121 lbs	5 lbs	10,126 lbs
13	N,N-Dimethylformamide	68-12-2	7,802 lbs	0 lbs	7,802 lbs
14	Butyl acrylate	141-32-2	6,270 lbs	0 lbs	6,270 lbs
15	Molybdenum trioxide	1313-27-5	4,613 lbs	482 lbs	5,095 lbs
16	Acetaldehyde	75-07-0	4,422 lbs	0 lbs	4,422 lbs
17	Hydrogen sulfide	7783-06-4	3,596 lbs	0 lbs	3,596 lbs
18	Certain glycol ethers	N230	3,532 lbs	0 lbs	3,532 lbs
19	Ethyl acrylate	140-88-5	3,477 lbs	0 lbs	3,477 lbs
20	Chloroethane	75-00-3	3,424 lbs	0 lbs	3,424 lbs
21	Propylene	115-07-1	3,012 lbs	0 lbs	3,012 lbs
22	Methyl acrylate	96-33-3	2,867 lbs	0 lbs	2,867 lbs
23	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0 lbs	2,660 lbs	2,660 lbs
24	n-Butyl alcohol	71-36-3	1,893 lbs	0 lbs	1,893 lbs
25	Styrene	100-42-5	1,878 lbs	0 lbs	1,878 lbs
26	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	1,840 lbs	0 lbs	1,840 lbs
27	Hydroquinone	123-31-9	1,723 lbs	0 lbs	1,723 lbs
28	Chlorine	7782-50-5	1,293 lbs	0 lbs	1,293 lbs
29	tert-Butyl alcohol	75-65-0	1,238 lbs	0 lbs	1,238 lbs
30	Acrolein	107-02-8	1,224 lbs	0 lbs	1,224 lbs
31	1,3-Butadiene	106-99-0	1,172 lbs	0 lbs	1,172 lbs
32	Nickel compounds	N495	1,017 lbs	108 lbs	1,125 lbs
33	2-Methoxyethanol	109-86-4	1,027 lbs	0 lbs	1,027 lbs
34	Methyl iodide	74-88-4	958 lbs	0 lbs	958 lbs
35	Formaldehyde	50-00-0	815 lbs	0 lbs	815 lbs
36	Epichlorohydrin	106-89-8	643 lbs	0 lbs	643 lbs
37	Dibutyl phthalate	84-74-2	496 lbs	0 lbs	496 lbs
38	Cobalt compounds	N096	455 lbs	36 lbs	491 lbs
39	Nickel And Nickel Compounds	N495	423 lbs	34 lbs	457 lbs
40	Maleic anhydride	108-31-6	413 lbs	0 lbs	413 lbs
41	2-Ethoxyethanol	110-80-5	407 lbs	0 lbs	407 lbs
42	Di(2-ethylhexyl) phthalate	117-81-7	222 lbs	0 lbs	222 lbs
43	Cumene	98-82-8	210 lbs	0 lbs	210 lbs
44	Cobalt And Cobalt Compounds	N096	182 lbs	8 lbs	190 lbs
45	Vanadium (except when contained in an alloy)	7440-62-2	170 lbs	0 lbs	170 lbs
46	Allyl chloride	107-05-1	165 lbs	0 lbs	165 lbs
47	Nonylphenol Ethoxylates	N535	131 lbs	0 lbs	131 lbs
48	Dimethylamine	124-40-3	113 lbs	0 lbs	113 lbs
49	1,2,4-Trimethylbenzene	95-63-6	74 lbs	0 lbs	74 lbs
50	Propylene oxide	75-56-9	70 lbs	0 lbs	70 lbs
51	Vanadium compounds	N770	67 lbs	0 lbs	67 lbs
52	Xylene (mixed isomers)	1330-20-7	39 lbs	0 lbs	39 lbs
53	Benzoyl chloride	98-88-4	33 lbs	0 lbs	33 lbs
54	Cyclohexane	110-82-7	24 lbs	0 lbs	24 lbs
55	Lead And Lead Compounds	N420	16 lbs	1 lbs	17 lbs
56	Phthalic anhydride	85-44-9	14 lbs	0 lbs	14 lbs
57	Ethylbenzene	100-41-4	4 lbs	0 lbs	4 lbs
58	Manganese And Manganese Compounds	N450	3 lbs	0 lbs	3 lbs
59	4,4'-Isopropylidenediphenol	80-05-7	1 lbs	0 lbs	1 lbs
60	Nonylphenol	N530	1 lbs	0 lbs	1 lbs