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
5761 UNDERWOOD RD PASADENA 77507
Elevation
16.12 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: 6.12 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 90% 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)
7.45 million lbs
Extremely High
1142.2x more than typical Houston property
≈ 373 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)
7.42 million lbs
Extremely High
1539.0x 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)7,452,206 lbs7,421,358 lbs30,848 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)3,715,775 lbs594,040 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 90% 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):

n-Hexane, Ethylene, Ammonia, Methanol, Toluene

View the full list of 84 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (84 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,403,645 lbs0 lbs1,403,645 lbs
2Ethylene74-85-11,117,038 lbs0 lbs1,117,038 lbs
3Ammonia7664-41-7764,553 lbs123 lbs764,696 lbs
4Methanol67-56-1692,071 lbs0 lbs698,598 lbs
5Toluene108-88-3687,020 lbs0 lbs687,020 lbs
6Vinyl acetate108-05-4516,353 lbs0 lbs516,353 lbs
7Nitric acid7697-37-2398,305 lbs55 lbs398,385 lbs
8Ethylene glycol107-21-1178,756 lbs0 lbs178,756 lbs
9Ethylene oxide75-21-8156,220 lbs0 lbs156,220 lbs
10Methyl methacrylate80-62-6116,978 lbs0 lbs117,250 lbs
11Butyl acrylate141-32-2112,617 lbs0 lbs112,617 lbs
12n-Butyl alcohol71-36-3110,095 lbs0 lbs110,095 lbs
13Titanium tetrachloride7550-45-0108,195 lbs0 lbs108,195 lbs
14Acetaldehyde75-07-0107,268 lbs0 lbs107,268 lbs
15Acrylic acid79-10-799,607 lbs0 lbs99,607 lbs
16N,N-Dimethylformamide68-12-286,962 lbs0 lbs86,962 lbs
17Acrylonitrile107-13-184,414 lbs0 lbs84,414 lbs
18Styrene100-42-577,203 lbs0 lbs77,334 lbs
19Propylene115-07-172,744 lbs0 lbs72,744 lbs
20Molybdenum trioxide1313-27-561,969 lbs3,227 lbs65,211 lbs
211,3-Butadiene106-99-059,009 lbs0 lbs59,009 lbs
22Certain glycol ethersN23049,151 lbs0 lbs49,152 lbs
23Chlorodifluoromethane (HCFC-22)75-45-638,792 lbs0 lbs38,792 lbs
24Ethyl acrylate140-88-537,097 lbs0 lbs37,097 lbs
25Hydrogen sulfide7783-06-431,678 lbs0 lbs31,678 lbs
26Phenol108-95-230,497 lbs0 lbs30,497 lbs
27Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs24,032 lbs24,077 lbs
28Methyl acrylate96-33-323,024 lbs0 lbs23,024 lbs
29tert-Butyl alcohol75-65-020,711 lbs0 lbs20,711 lbs
30Xylene (mixed isomers)1330-20-717,107 lbs0 lbs17,107 lbs
31Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-015,293 lbs0 lbs15,293 lbs
32Chlorine7782-50-515,132 lbs0 lbs15,132 lbs
33Nickel compoundsN49513,184 lbs1,925 lbs15,124 lbs
342-Methoxyethanol109-86-411,669 lbs0 lbs11,669 lbs
35Chloroethane75-00-39,070 lbs0 lbs9,070 lbs
36Epichlorohydrin106-89-87,442 lbs0 lbs7,442 lbs
37Nickel And Nickel CompoundsN4957,116 lbs137 lbs7,253 lbs
38Cobalt compoundsN0966,325 lbs886 lbs7,226 lbs
39Maleic anhydride108-31-66,616 lbs0 lbs6,616 lbs
402-Ethoxyethanol110-80-56,044 lbs0 lbs6,044 lbs
41Dibutyl phthalate84-74-25,792 lbs0 lbs5,792 lbs
42Cobalt And Cobalt CompoundsN0965,292 lbs42 lbs5,334 lbs
43Ethylbenzene100-41-45,307 lbs0 lbs5,307 lbs
44Methyl iodide74-88-45,089 lbs0 lbs5,089 lbs
45Cumene98-82-85,060 lbs0 lbs5,060 lbs
46Diphenylamine122-39-44,941 lbs0 lbs4,941 lbs
47Formaldehyde50-00-04,642 lbs102 lbs4,744 lbs
48Isoprene78-79-54,016 lbs0 lbs4,016 lbs
49Dimethylamine124-40-33,754 lbs0 lbs3,754 lbs
50Propylene oxide75-56-92,606 lbs0 lbs2,606 lbs
51Acrolein107-02-82,268 lbs0 lbs2,268 lbs
52Hydroquinone123-31-92,263 lbs0 lbs2,263 lbs
53Vanadium compoundsN7702,177 lbs0 lbs2,177 lbs
54Vanadium (except when contained in an alloy)7440-62-21,691 lbs0 lbs1,691 lbs
55Allyl alcohol107-18-61,569 lbs0 lbs1,569 lbs
561,2,4-Trimethylbenzene95-63-61,325 lbs0 lbs1,325 lbs
57Allyl chloride107-05-11,277 lbs0 lbs1,277 lbs
58NonylphenolN5301,013 lbs0 lbs1,013 lbs
59Nonylphenol EthoxylatesN5351,008 lbs0 lbs1,008 lbs
60Cyclohexane110-82-7857 lbs0 lbs857 lbs
61Benzoyl chloride98-88-4469 lbs0 lbs469 lbs
62Hydrazine302-01-2437 lbs0 lbs437 lbs
63Zinc compoundsN9825 lbs233 lbs238 lbs
64Naphthalene91-20-3233 lbs0 lbs233 lbs
65Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
66Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
67Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
68Copper compoundsN100132 lbs24 lbs156 lbs
69Bifenthrin82657-04-3149 lbs0 lbs149 lbs
70Lead compoundsN420138 lbs4 lbs142 lbs
71Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N090101 lbs14 lbs115 lbs
72Cyanide compoundsN1065 lbs0 lbs58 lbs
73Chloromethane74-87-351 lbs0 lbs51 lbs
74Chromium compounds (except for chromite ore mined in the Transvaal Region)N09029 lbs4 lbs33 lbs
75Phthalic anhydride85-44-927 lbs0 lbs27 lbs
76Cumene hydroperoxide80-15-926 lbs0 lbs26 lbs
77Oxyfluorfen42874-03-310 lbs0 lbs10 lbs
784,4'-Diaminodiphenyl ether101-80-46 lbs0 lbs6 lbs
79Benzene71-43-25 lbs0 lbs5 lbs
80Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
81Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
82Nickel7440-02-02 lbs0 lbs2 lbs
83Formic acid64-18-61 lbs0 lbs1 lbs
84Boron trifluoride7637-07-21 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 69 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (69 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-132,154 lbs0 lbs681,185 lbs
2Ethylene glycol107-21-117,573 lbs0 lbs448,462 lbs
3Ethyl acrylate140-88-53,477 lbs0 lbs391,250 lbs
4Acrylic acid79-10-711,701 lbs0 lbs339,248 lbs
5Molybdenum trioxide1313-27-54,613 lbs482 lbs304,792 lbs
6n-Hexane110-54-3142,977 lbs0 lbs144,113 lbs
7Ethylene74-85-1128,986 lbs0 lbs128,986 lbs
8Vinyl acetate108-05-419,007 lbs0 lbs126,102 lbs
9tert-Butyl alcohol75-65-01,238 lbs0 lbs94,671 lbs
10Nonylphenol EthoxylatesN535131 lbs0 lbs93,342 lbs
11Dimethylamine124-40-3341 lbs0 lbs92,098 lbs
12Vanadium (except when contained in an alloy)7440-62-2170 lbs0 lbs86,403 lbs
13Ammonia7664-41-784,685 lbs5 lbs86,291 lbs
14n-Butyl alcohol71-36-32,825 lbs0 lbs80,378 lbs
15Acetaldehyde75-07-04,422 lbs0 lbs78,126 lbs
16Toluene108-88-338,494 lbs0 lbs66,978 lbs
17Diphenylamine122-39-42 lbs0 lbs48,628 lbs
18Butyl acrylate141-32-26,270 lbs0 lbs47,346 lbs
19Nickel And Nickel CompoundsN495423 lbs34 lbs44,896 lbs
201,2,4-Trimethylbenzene95-63-699 lbs0 lbs44,035 lbs
21Vanadium compoundsN77067 lbs0 lbs39,269 lbs
22Cobalt And Cobalt CompoundsN096182 lbs8 lbs38,207 lbs
23Copper7440-50-80 lbs0 lbs27,230 lbs
24Ethylene oxide75-21-811,137 lbs0 lbs21,960 lbs
25Methyl methacrylate80-62-618,415 lbs0 lbs18,587 lbs
26Methyl acrylate96-33-32,867 lbs0 lbs17,363 lbs
27Xylene (mixed isomers)1330-20-7635 lbs0 lbs13,936 lbs
28Certain glycol ethersN2303,532 lbs0 lbs13,299 lbs
29Titanium tetrachloride7550-45-010,755 lbs0 lbs10,755 lbs
30Nitric acid7697-37-210,123 lbs5 lbs10,133 lbs
31Chloroethane75-00-33,424 lbs0 lbs9,649 lbs
32N,N-Dimethylformamide68-12-27,802 lbs0 lbs9,019 lbs
33Nickel compoundsN4951,017 lbs108 lbs7,851 lbs
34Phenol108-95-21,875 lbs0 lbs6,506 lbs
35Naphthalene91-20-312 lbs0 lbs4,436 lbs
36Styrene100-42-52,136 lbs0 lbs3,899 lbs
37Hydrogen sulfide7783-06-43,596 lbs0 lbs3,596 lbs
38Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,660 lbs3,352 lbs
39Propylene115-07-13,012 lbs0 lbs3,012 lbs
40Ethylbenzene100-41-4275 lbs0 lbs2,926 lbs
41Cumene98-82-8210 lbs0 lbs2,919 lbs
42Cobalt compoundsN096455 lbs36 lbs2,816 lbs
43Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,840 lbs0 lbs1,840 lbs
44Acrolein107-02-81,224 lbs0 lbs1,784 lbs
45Hydroquinone123-31-91,723 lbs0 lbs1,723 lbs
46Cumene hydroperoxide80-15-90 lbs0 lbs1,560 lbs
47Formaldehyde50-00-0966 lbs0 lbs1,479 lbs
48Chlorine7782-50-51,293 lbs0 lbs1,293 lbs
491,3-Butadiene106-99-01,172 lbs0 lbs1,172 lbs
50Dibutyl phthalate84-74-2496 lbs0 lbs1,073 lbs
512-Methoxyethanol109-86-41,027 lbs0 lbs1,045 lbs
52Maleic anhydride108-31-6591 lbs0 lbs997 lbs
53Methyl iodide74-88-4958 lbs0 lbs958 lbs
54Epichlorohydrin106-89-8643 lbs0 lbs643 lbs
552-Ethoxyethanol110-80-5407 lbs0 lbs429 lbs
56Dimethyl phthalate131-11-30 lbs0 lbs406 lbs
57Cyclohexane110-82-724 lbs0 lbs315 lbs
58Propylene oxide75-56-970 lbs0 lbs234 lbs
59NonylphenolN5301 lbs0 lbs224 lbs
60Di(2-ethylhexyl) phthalate117-81-7222 lbs0 lbs222 lbs
61Allyl chloride107-05-1165 lbs0 lbs165 lbs
62Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
63Hydrazine302-01-239 lbs0 lbs39 lbs
64Benzoyl chloride98-88-433 lbs0 lbs33 lbs
65Phthalic anhydride85-44-914 lbs0 lbs14 lbs
66Acrylonitrile107-13-10 lbs0 lbs4 lbs
67Manganese And Manganese CompoundsN4503 lbs0 lbs3 lbs
68Aniline62-53-30 lbs0 lbs2 lbs
694,4'-Diaminodiphenyl ether101-80-40 lbs0 lbs1 lbs

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