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
511 WESTWAY ST GALENA PARK 77547
Building Size
1,388 sqft
Total structure area from HCAD building records.
Elevation
27.97 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
Property not flooded at current water level. No damage to calculate.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Property not flooded at current water level. No damage to calculate.
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: 17.97 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
Very High
Higher pollution than 94% 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)
18.89 million lbs
Extremely High
2895.8x more than typical Houston property
≈ 945 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)
5.86 million lbs
Extremely High
1214.9x 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)
13.03 million 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)18,893,302 lbs5,858,854 lbs13,034,449 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)3,247,630 lbs485,108 lbs2,052,809 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 94% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).

Top chemicals released near this property (past 10 years):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, n-Hexane, Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 72 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (72 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs13,016,167 lbs13,016,167 lbs
2Hydrogen cyanide74-90-82,226,566 lbs0 lbs2,226,566 lbs
3n-Hexane110-54-3519,616 lbs9 lbs519,703 lbs
4Ammonia7664-41-7422,363 lbs8,000 lbs430,363 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9383,635 lbs0 lbs383,635 lbs
6Xylene (mixed isomers)1330-20-7339,061 lbs645 lbs339,807 lbs
7Toluene108-88-3275,249 lbs209 lbs275,569 lbs
8Benzene71-43-2264,753 lbs113 lbs264,895 lbs
9Propylene115-07-1248,362 lbs0 lbs248,362 lbs
10Hydrogen sulfide7783-06-4230,430 lbs3,527 lbs233,957 lbs
11Ethylene74-85-1144,210 lbs0 lbs144,210 lbs
12n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
13Cyclohexane110-82-7132,775 lbs0 lbs132,784 lbs
14Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
15Diethanolamine111-42-2101,560 lbs0 lbs101,560 lbs
16Methanol67-56-163,406 lbs0 lbs63,406 lbs
17Ethylbenzene100-41-448,668 lbs70 lbs48,783 lbs
18Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
191,3-Butadiene106-99-025,196 lbs0 lbs25,196 lbs
201,2,4-Trimethylbenzene95-63-623,199 lbs0 lbs23,428 lbs
21Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
22Ethylene glycol107-21-114,690 lbs0 lbs14,699 lbs
23Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
241,4-Dioxane123-91-110,779 lbs0 lbs10,779 lbs
25Naphthalene91-20-39,100 lbs3 lbs9,116 lbs
26Carbon disulfide75-15-08,908 lbs0 lbs8,908 lbs
27Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
28Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
29Polycyclic aromatic compoundsN5904,518 lbs115 lbs4,834 lbs
30Phenol108-95-21,635 lbs2,959 lbs4,594 lbs
31Manganese7439-96-54,228 lbs0 lbs4,228 lbs
32Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
33Cumene98-82-83,997 lbs0 lbs4,004 lbs
34Styrene100-42-53,254 lbs0 lbs3,254 lbs
35Zinc compoundsN982219 lbs1,181 lbs2,891 lbs
36Phthalic anhydride85-44-92,000 lbs0 lbs2,000 lbs
37Vinyl acetate108-05-41,608 lbs0 lbs1,608 lbs
38Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,460 lbs0 lbs1,460 lbs
39Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
40Nickel compoundsN495654 lbs489 lbs1,143 lbs
41Lead7439-92-1886 lbs171 lbs1,057 lbs
42Acetaldehyde75-07-01,011 lbs0 lbs1,011 lbs
43Phenanthrene85-01-8937 lbs0 lbs937 lbs
44Vanadium compoundsN770144 lbs509 lbs653 lbs
451,1,1,2-Tetrachloroethane630-20-6434 lbs0 lbs434 lbs
46Biphenyl92-52-4345 lbs0 lbs364 lbs
47Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
48Lead And Lead CompoundsN420204 lbs22 lbs227 lbs
49Mercury compoundsN458200 lbs2 lbs203 lbs
50Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
51Cobalt compoundsN096131 lbs24 lbs155 lbs
52Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
53Lead compoundsN42049 lbs57 lbs106 lbs
54Dimethylamine124-40-390 lbs0 lbs90 lbs
55Mercury7439-97-689 lbs0 lbs89 lbs
56Anthracene120-12-775 lbs0 lbs75 lbs
57Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
58Antimony compoundsN01038 lbs0 lbs38 lbs
59Nickel7440-02-035 lbs0 lbs35 lbs
60Allyl alcohol107-18-634 lbs0 lbs34 lbs
61tert-Butyl alcohol75-65-022 lbs0 lbs22 lbs
62Benzo[g,h,i]perylene191-24-213 lbs7 lbs20 lbs
63Methoxone sodium salt3653-48-320 lbs0 lbs20 lbs
64Triethylamine121-44-817 lbs0 lbs17 lbs
65Acrolein107-02-813 lbs0 lbs13 lbs
66Hydroquinone123-31-99 lbs0 lbs9 lbs
67Diaminotoluene (mixed isomers)25376-45-84 lbs0 lbs4 lbs
68Pyridine110-86-13 lbs0 lbs3 lbs
69Chloroethane75-00-32 lbs0 lbs2 lbs
70p-Cresol106-44-52 lbs0 lbs2 lbs
71Trichloroethylene79-01-61 lbs0 lbs1 lbs
722,4-Diaminotoluene95-80-71 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), 1,4-Dioxane, Ethylene glycol, Hydrogen cyanide, Diethanolamine

View the full list of 47 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (47 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,051,661 lbs2,051,661 lbs
21,4-Dioxane123-91-1328 lbs0 lbs396,851 lbs
3Ethylene glycol107-21-15,094 lbs0 lbs184,568 lbs
4Hydrogen cyanide74-90-8177,459 lbs0 lbs177,459 lbs
5Diethanolamine111-42-210,082 lbs0 lbs85,611 lbs
6Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-950,799 lbs0 lbs50,799 lbs
7Ammonia7664-41-736,883 lbs1,027 lbs46,301 lbs
8n-Hexane110-54-338,611 lbs0 lbs38,682 lbs
9Xylene (mixed isomers)1330-20-733,993 lbs18 lbs34,091 lbs
10Ozone10028-15-625,701 lbs0 lbs25,701 lbs
11Toluene108-88-323,813 lbs12 lbs23,943 lbs
12Methanol67-56-1152 lbs0 lbs23,827 lbs
13Benzene71-43-220,704 lbs6 lbs20,747 lbs
14Zinc compoundsN98222 lbs32 lbs19,978 lbs
15Hydrogen sulfide7783-06-414,137 lbs0 lbs14,140 lbs
16Propylene115-07-112,954 lbs0 lbs12,954 lbs
17Cyclohexane110-82-711,534 lbs0 lbs11,534 lbs
18Ethylene74-85-19,495 lbs0 lbs9,495 lbs
19Ethylbenzene100-41-44,189 lbs12 lbs4,242 lbs
20Phenol108-95-2164 lbs8 lbs3,009 lbs
211,2,4-Trimethylbenzene95-63-61,785 lbs0 lbs1,856 lbs
22Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
23Certain glycol ethersN2300 lbs0 lbs1,111 lbs
24Naphthalene91-20-31,004 lbs0 lbs1,084 lbs
25Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
26Lead And Lead CompoundsN420128 lbs12 lbs938 lbs
27Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
281,3-Butadiene106-99-0734 lbs0 lbs734 lbs
29Cumene98-82-8550 lbs0 lbs555 lbs
30Carbon disulfide75-15-0484 lbs0 lbs484 lbs
31Polycyclic aromatic compoundsN590354 lbs15 lbs369 lbs
32Styrene100-42-5262 lbs0 lbs262 lbs
33Lead7439-92-1228 lbs1 lbs242 lbs
34Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0221 lbs0 lbs221 lbs
351,1,1,2-Tetrachloroethane630-20-6212 lbs0 lbs212 lbs
36Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
37Phenanthrene85-01-836 lbs0 lbs36 lbs
38Biphenyl92-52-433 lbs0 lbs33 lbs
39Mercury And Mercury CompoundsN45829 lbs0 lbs31 lbs
40Dimethylamine124-40-323 lbs0 lbs23 lbs
41Anthracene120-12-71 lbs0 lbs14 lbs
42Benzo[g,h,i]perylene191-24-28 lbs5 lbs13 lbs
43Mercury7439-97-67 lbs0 lbs7 lbs
44Vinyl acetate108-05-45 lbs0 lbs5 lbs
45Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs
46Acetaldehyde75-07-01 lbs0 lbs1 lbs
47Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs

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