Data-driven insights for local properties

📊 Environmental Assessment Report

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.

🌊 Part 1: Flood Risk Analysis

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 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 Low
Risk based on FEMA zone and simulation.

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 Low
Flood Depth
0 ft ±0.5 ft
No flooding at current water level.
Water Surface Elevation (WSE)
N/A
Water surface elevation data not available.
Area Inundated
N/A
Data not available
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage Estimate (HCAD Valuation)
$0
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
Analysis Method
COG Bathtub 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 Safe
Safety Margin: 5.3 feet
Severity: Safe

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.

  • FEMA Zone X (minimal hazard) - flood insurance available at preferred rates.
  • Review the interactive flood simulator to understand how different rainfall events could affect this property.
  • Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 89% of Houston homes
This ranking compares pollution levels within 2 miles of this property against 10,000 randomly sampled Houston metro properties. Lower percentiles indicate higher pollution exposure.
Industrial Pollution Nearby (Last 10 Years)
5.33 million lbs
Extremely High
816.5x more than typical Houston property
≈ 266 dump trucks of chemicals within 2 miles
Total chemical releases from all industrial facilities within a 2-mile radius over the past decade (2014–2024). Data from EPA's Toxic Release Inventory tracking air, water, and land discharges.
💨 Air Pollution (Last 10 Years)
5.3 million lbs
Extremely High
1098.4x more than typical Houston property
Chemicals released into the air from nearby facilities over 10 years. Includes both fugitive emissions (leaks, evaporation) and stack emissions (smokestacks, vents). May affect local air quality.
💧 Water Pollution (Last 10 Years)
31 thousand lbs
Extremely High
Most Houston properties have none nearby
Chemical discharges to surface water (bayous, streams, drainage) from industrial facilities within 2 miles over the past decade. May impact local waterways and drainage systems.

❤️ 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)3,110,710 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 15% most polluted).

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):

Ethylene glycol, Methanol, Ethyl acrylate, Acrylic acid, Molybdenum trioxide

View the full list of 65 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (65 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene glycol107-21-117,583 lbs0 lbs505,395 lbs
2Methanol67-56-130,969 lbs0 lbs481,938 lbs
3Ethyl acrylate140-88-53,477 lbs0 lbs391,250 lbs
4Acrylic acid79-10-711,762 lbs0 lbs339,314 lbs
5Molybdenum trioxide1313-27-54,613 lbs482 lbs304,792 lbs
6Vinyl acetate108-05-419,007 lbs0 lbs126,102 lbs
7tert-Butyl alcohol75-65-01,238 lbs0 lbs94,671 lbs
8Vanadium (except when contained in an alloy)7440-62-2170 lbs0 lbs86,403 lbs
9Ammonia7664-41-784,683 lbs5 lbs85,863 lbs
10Nonylphenol EthoxylatesN535131 lbs0 lbs81,533 lbs
11n-Butyl alcohol71-36-31,893 lbs0 lbs78,369 lbs
12Acetaldehyde75-07-04,422 lbs0 lbs78,126 lbs
13Ethylene74-85-157,665 lbs0 lbs57,665 lbs
14Butyl acrylate141-32-26,270 lbs0 lbs47,346 lbs
15Nickel And Nickel CompoundsN495423 lbs34 lbs44,896 lbs
16Vanadium compoundsN77067 lbs0 lbs39,269 lbs
17Cobalt And Cobalt CompoundsN096182 lbs8 lbs38,207 lbs
18Copper7440-50-80 lbs0 lbs27,230 lbs
19n-Hexane110-54-326,437 lbs0 lbs27,072 lbs
20Toluene108-88-324,431 lbs0 lbs26,204 lbs
21Ethylene oxide75-21-811,218 lbs0 lbs19,343 lbs
22Methyl methacrylate80-62-618,415 lbs0 lbs18,587 lbs
23Methyl acrylate96-33-32,867 lbs0 lbs17,363 lbs
24Certain glycol ethersN2303,532 lbs0 lbs13,299 lbs
25Titanium tetrachloride7550-45-010,755 lbs0 lbs10,755 lbs
26Nitric acid7697-37-210,121 lbs5 lbs10,131 lbs
27Chloroethane75-00-33,424 lbs0 lbs9,649 lbs
28N,N-Dimethylformamide68-12-27,802 lbs0 lbs9,019 lbs
29Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
30Styrene100-42-51,878 lbs0 lbs3,641 lbs
31Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
32Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,660 lbs3,352 lbs
33Propylene115-07-13,012 lbs0 lbs3,012 lbs
34Cobalt compoundsN096455 lbs36 lbs2,816 lbs
35Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,840 lbs0 lbs1,840 lbs
36Acrolein107-02-81,224 lbs0 lbs1,784 lbs
37Hydroquinone123-31-91,723 lbs0 lbs1,723 lbs
38Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
39Chlorine7782-50-51,293 lbs0 lbs1,293 lbs
401,3-Butadiene106-99-01,172 lbs0 lbs1,172 lbs
41Dibutyl phthalate84-74-2496 lbs0 lbs1,073 lbs
422-Methoxyethanol109-86-41,027 lbs0 lbs1,045 lbs
43Methyl iodide74-88-4958 lbs0 lbs958 lbs
44Formaldehyde50-00-0812 lbs0 lbs812 lbs
45Epichlorohydrin106-89-8643 lbs0 lbs643 lbs
462-Ethoxyethanol110-80-5407 lbs0 lbs429 lbs
47Maleic anhydride108-31-6413 lbs0 lbs419 lbs
48Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
49Propylene oxide75-56-969 lbs0 lbs233 lbs
50NonylphenolN5301 lbs0 lbs224 lbs
51Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
52Cumene98-82-8206 lbs0 lbs206 lbs
53Allyl chloride107-05-1165 lbs0 lbs165 lbs
544,4'-Isopropylidenediphenol80-05-71 lbs0 lbs146 lbs
55Dimethylamine124-40-3113 lbs0 lbs113 lbs
56Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
57Benzoyl chloride98-88-433 lbs0 lbs33 lbs
58Naphthalene91-20-30 lbs0 lbs25 lbs
591,2,4-Trimethylbenzene95-63-60 lbs0 lbs23 lbs
60Phthalic anhydride85-44-914 lbs0 lbs14 lbs
61Ethylbenzene100-41-40 lbs0 lbs13 lbs
62Acrylonitrile107-13-10 lbs0 lbs4 lbs
63Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
64Aniline62-53-30 lbs0 lbs2 lbs
654,4'-Diaminodiphenyl ether101-80-40 lbs0 lbs1 lbs

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