Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 6161 Underwood Rd, Pasadena, TX 77507

HCAD #0410030000136
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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 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
6161 Underwood Rd, Pasadena, TX 77507
Elevation
15.3 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
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)
25.14 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)
$0
Vacant lot (no building data).
Depth-Damage (Neighborhood)
$0
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.

Property Would Be Flooded
Flood Depth: 9.84 feet
Severity
Severe
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.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
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)
5.33 millionlbs
Extremely High
816.5x more than typical Houston property
≈ 266 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
5.3 millionlbs
Extremely High
1098.4x 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
28
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.

PeriodTotalAirWater
Typical Houston Property (2014-2024)6,524 lbs4,822 lbs0 lbs
This Property (2014-2024)5,327,357 lbs5,296,679 lbs30,678 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)389,705 lbs386,366 lbs3,339 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
6%
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 83 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(83 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ammonia7664-41-7765,333 lbs55 lbs765,408 lbs
2Ethylene74-85-1719,750 lbs0 lbs719,750 lbs
3Methanol67-56-1602,834 lbs0 lbs609,361 lbs
4Vinyl acetate108-05-4516,353 lbs0 lbs516,353 lbs
5Nitric acid7697-37-2398,291 lbs55 lbs398,371 lbs
6n-Hexane110-54-3390,514 lbs0 lbs390,514 lbs
7Toluene108-88-3261,043 lbs0 lbs261,043 lbs
8Ethylene glycol107-21-1180,660 lbs0 lbs180,660 lbs
9Ethylene oxide75-21-8156,727 lbs0 lbs156,727 lbs
10Methyl methacrylate80-62-6116,976 lbs0 lbs117,248 lbs
11Butyl acrylate141-32-2112,617 lbs0 lbs112,617 lbs
12Titanium tetrachloride7550-45-0108,195 lbs0 lbs108,195 lbs
13Acetaldehyde75-07-0107,268 lbs0 lbs107,268 lbs
14Acrylic acid79-10-7100,155 lbs0 lbs100,155 lbs
15N,N-Dimethylformamide68-12-286,962 lbs0 lbs86,962 lbs
16Propylene115-07-172,744 lbs0 lbs72,744 lbs
17Styrene100-42-572,162 lbs0 lbs72,293 lbs
18Molybdenum trioxide1313-27-561,969 lbs3,227 lbs65,211 lbs
191,3-Butadiene106-99-059,009 lbs0 lbs59,009 lbs
20n-Butyl alcohol71-36-355,665 lbs0 lbs55,665 lbs
21Certain glycol ethersN23049,148 lbs0 lbs49,149 lbs
22Chlorodifluoromethane (HCFC-22)75-45-638,792 lbs0 lbs38,792 lbs
23Ethyl acrylate140-88-537,097 lbs0 lbs37,097 lbs
24Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
25Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51175 lbs24,032 lbs24,122 lbs
26Methyl acrylate96-33-323,024 lbs0 lbs23,024 lbs
27tert-Butyl alcohol75-65-020,711 lbs0 lbs20,711 lbs
28Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-015,293 lbs0 lbs15,293 lbs
29Chlorine7782-50-515,132 lbs0 lbs15,132 lbs
30Nickel compoundsN49513,184 lbs1,925 lbs15,124 lbs
312-Methoxyethanol109-86-411,669 lbs0 lbs11,669 lbs
32Chloroethane75-00-39,070 lbs0 lbs9,070 lbs
33Epichlorohydrin106-89-87,442 lbs0 lbs7,442 lbs
34Nickel And Nickel CompoundsN4957,116 lbs137 lbs7,253 lbs
35Cobalt compoundsN0966,325 lbs886 lbs7,226 lbs
362-Ethoxyethanol110-80-56,044 lbs0 lbs6,044 lbs
37Dibutyl phthalate84-74-25,792 lbs0 lbs5,792 lbs
38Maleic anhydride108-31-65,650 lbs0 lbs5,650 lbs
39Cobalt And Cobalt CompoundsN0965,292 lbs42 lbs5,334 lbs
40Methyl iodide74-88-45,089 lbs0 lbs5,089 lbs
41Cumene98-82-84,991 lbs0 lbs4,991 lbs
42Isoprene78-79-54,016 lbs0 lbs4,016 lbs
43Vanadium compoundsN7703,122 lbs0 lbs3,137 lbs
44Propylene oxide75-56-92,592 lbs0 lbs2,592 lbs
45Zinc compoundsN9822,339 lbs233 lbs2,572 lbs
46Acrolein107-02-82,268 lbs0 lbs2,268 lbs
47Hydroquinone123-31-92,263 lbs0 lbs2,263 lbs
48Formaldehyde50-00-01,929 lbs0 lbs1,929 lbs
49Dimethylamine124-40-31,745 lbs0 lbs1,745 lbs
50Vanadium (except when contained in an alloy)7440-62-21,691 lbs0 lbs1,691 lbs
51Xylene (mixed isomers)1330-20-71,591 lbs0 lbs1,591 lbs
52Allyl alcohol107-18-61,569 lbs0 lbs1,569 lbs
53Allyl chloride107-05-11,277 lbs0 lbs1,277 lbs
54NonylphenolN5301,013 lbs0 lbs1,013 lbs
55Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
56Acrylonitrile107-13-1775 lbs0 lbs775 lbs
57Cyclohexane110-82-7480 lbs0 lbs480 lbs
58Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
59Diethanolamine111-42-2308 lbs0 lbs308 lbs
601,2,4-Trimethylbenzene95-63-6284 lbs0 lbs284 lbs
61Phosphorus (yellow or white)12185-10-3250 lbs0 lbs250 lbs
62Naphthalene91-20-3234 lbs0 lbs234 lbs
63Lead And Lead CompoundsN420213 lbs10 lbs222 lbs
64Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
65Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
66Copper compoundsN100132 lbs24 lbs156 lbs
67Bifenthrin82657-04-3149 lbs0 lbs149 lbs
68Lead compoundsN420140 lbs4 lbs144 lbs
694,4'-Isopropylidenediphenol80-05-7141 lbs0 lbs141 lbs
70Formic acid64-18-6138 lbs0 lbs138 lbs
71Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N090101 lbs14 lbs115 lbs
72Diphenylamine122-39-487 lbs0 lbs87 lbs
73Cyanide compoundsN1065 lbs0 lbs58 lbs
74Chromium compounds (except for chromite ore mined in the Transvaal Region)N09029 lbs4 lbs33 lbs
75Sodium nitrite7632-00-033 lbs0 lbs33 lbs
76Phthalic anhydride85-44-927 lbs0 lbs27 lbs
77Cumene hydroperoxide80-15-926 lbs0 lbs26 lbs
78Oxyfluorfen42874-03-310 lbs0 lbs10 lbs
794,4'-Diaminodiphenyl ether101-80-46 lbs0 lbs6 lbs
80Benzene71-43-25 lbs0 lbs5 lbs
81Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
82Nickel7440-02-02 lbs0 lbs2 lbs
83N-Methyl-2-pyrrolidone872-50-41 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, Ethylene, Methanol, n-Hexane, Toluene
View the full list of 56 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(56 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-784,683 lbs5 lbs84,688 lbs
2Ethylene74-85-157,665 lbs0 lbs57,665 lbs
3Methanol67-56-130,969 lbs0 lbs30,969 lbs
4n-Hexane110-54-326,437 lbs0 lbs26,437 lbs
5Toluene108-88-324,431 lbs0 lbs24,431 lbs
6Vinyl acetate108-05-419,007 lbs0 lbs19,007 lbs
7Methyl methacrylate80-62-618,415 lbs0 lbs18,415 lbs
8Ethylene glycol107-21-117,583 lbs0 lbs17,583 lbs
9Acrylic acid79-10-711,762 lbs0 lbs11,762 lbs
10Ethylene oxide75-21-811,218 lbs0 lbs11,218 lbs
11Titanium tetrachloride7550-45-010,755 lbs0 lbs10,755 lbs
12Nitric acid7697-37-210,121 lbs5 lbs10,126 lbs
13N,N-Dimethylformamide68-12-27,802 lbs0 lbs7,802 lbs
14Butyl acrylate141-32-26,270 lbs0 lbs6,270 lbs
15Molybdenum trioxide1313-27-54,613 lbs482 lbs5,095 lbs
16Acetaldehyde75-07-04,422 lbs0 lbs4,422 lbs
17Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
18Certain glycol ethersN2303,532 lbs0 lbs3,532 lbs
19Ethyl acrylate140-88-53,477 lbs0 lbs3,477 lbs
20Chloroethane75-00-33,424 lbs0 lbs3,424 lbs
21Propylene115-07-13,012 lbs0 lbs3,012 lbs
22Methyl acrylate96-33-32,867 lbs0 lbs2,867 lbs
23Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,660 lbs2,660 lbs
24n-Butyl alcohol71-36-31,893 lbs0 lbs1,893 lbs
25Styrene100-42-51,878 lbs0 lbs1,878 lbs
26Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,840 lbs0 lbs1,840 lbs
27Hydroquinone123-31-91,723 lbs0 lbs1,723 lbs
28Chlorine7782-50-51,293 lbs0 lbs1,293 lbs
29tert-Butyl alcohol75-65-01,238 lbs0 lbs1,238 lbs
30Acrolein107-02-81,224 lbs0 lbs1,224 lbs
311,3-Butadiene106-99-01,172 lbs0 lbs1,172 lbs
32Nickel compoundsN4951,017 lbs108 lbs1,125 lbs
332-Methoxyethanol109-86-41,027 lbs0 lbs1,027 lbs
34Methyl iodide74-88-4958 lbs0 lbs958 lbs
35Formaldehyde50-00-0812 lbs0 lbs812 lbs
36Epichlorohydrin106-89-8643 lbs0 lbs643 lbs
37Dibutyl phthalate84-74-2496 lbs0 lbs496 lbs
38Cobalt compoundsN096455 lbs36 lbs491 lbs
39Nickel And Nickel CompoundsN495423 lbs34 lbs457 lbs
40Maleic anhydride108-31-6413 lbs0 lbs413 lbs
412-Ethoxyethanol110-80-5407 lbs0 lbs407 lbs
42Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
43Cumene98-82-8206 lbs0 lbs206 lbs
44Cobalt And Cobalt CompoundsN096182 lbs8 lbs190 lbs
45Vanadium (except when contained in an alloy)7440-62-2170 lbs0 lbs170 lbs
46Allyl chloride107-05-1165 lbs0 lbs165 lbs
47Nonylphenol EthoxylatesN535131 lbs0 lbs131 lbs
48Dimethylamine124-40-3113 lbs0 lbs113 lbs
49Propylene oxide75-56-969 lbs0 lbs69 lbs
50Vanadium compoundsN77067 lbs0 lbs67 lbs
51Benzoyl chloride98-88-433 lbs0 lbs33 lbs
52Lead And Lead CompoundsN42016 lbs1 lbs17 lbs
53Phthalic anhydride85-44-914 lbs0 lbs14 lbs
54Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
554,4'-Isopropylidenediphenol80-05-71 lbs0 lbs1 lbs
56NonylphenolN5301 lbs0 lbs1 lbs
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