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
220 CALLOWAY ST HOUSTON 77029
Building Size
2,316 sqft
Total structure area from HCAD building records.
Elevation
30.65 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: 20.65 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 93% 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)
15.97 million lbs
Extremely High
2447.3x more than typical Houston property
≈ 798 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)
2.93 million lbs
Extremely High
608.5x 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)15,966,923 lbs2,934,230 lbs13,032,693 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,908,458 lbs261,647 lbs2,052,757 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 93% 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, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Xylene (mixed isomers)

View the full list of 69 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (69 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 cyanide74-90-81,408,014 lbs0 lbs1,408,014 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9383,635 lbs0 lbs383,635 lbs
4Ammonia7664-41-7336,948 lbs8,000 lbs344,948 lbs
5Xylene (mixed isomers)1330-20-7159,033 lbs0 lbs159,033 lbs
6Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
7Toluene108-88-394,346 lbs17 lbs94,363 lbs
8Cyclohexane110-82-780,271 lbs0 lbs80,271 lbs
9n-Hexane110-54-376,253 lbs0 lbs76,253 lbs
10Benzene71-43-260,181 lbs10 lbs60,191 lbs
11Propylene115-07-154,391 lbs0 lbs54,391 lbs
12Hydrogen sulfide7783-06-423,987 lbs3,527 lbs27,514 lbs
13Ethylbenzene100-41-420,678 lbs50 lbs20,729 lbs
141,2,4-Trimethylbenzene95-63-617,333 lbs0 lbs17,333 lbs
15Ethylene74-85-116,593 lbs0 lbs16,593 lbs
16Ethylene glycol107-21-114,690 lbs0 lbs14,690 lbs
171,4-Dioxane123-91-110,779 lbs0 lbs10,779 lbs
18Carbon disulfide75-15-08,908 lbs0 lbs8,908 lbs
191,3-Butadiene106-99-08,275 lbs0 lbs8,275 lbs
20Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
21Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
22Manganese7439-96-55,228 lbs331 lbs5,559 lbs
23Naphthalene91-20-34,546 lbs0 lbs4,547 lbs
24Phenol108-95-21,635 lbs1,804 lbs3,439 lbs
25Zinc compoundsN982233 lbs1,142 lbs2,866 lbs
26Polycyclic aromatic compoundsN5902,356 lbs1 lbs2,365 lbs
27Styrene100-42-52,274 lbs0 lbs2,275 lbs
28Cumene98-82-82,256 lbs0 lbs2,256 lbs
29Phthalic anhydride85-44-92,000 lbs0 lbs2,000 lbs
30Vinyl acetate108-05-41,608 lbs0 lbs1,608 lbs
31Lead7439-92-11,110 lbs383 lbs1,493 lbs
32Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,460 lbs0 lbs1,460 lbs
33Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
34Methanol67-56-11,187 lbs0 lbs1,187 lbs
35Nickel compoundsN495654 lbs489 lbs1,143 lbs
36Acetaldehyde75-07-01,011 lbs0 lbs1,011 lbs
37Phenanthrene85-01-8937 lbs0 lbs937 lbs
38Vanadium compoundsN770144 lbs509 lbs653 lbs
391,1,1,2-Tetrachloroethane630-20-6434 lbs0 lbs434 lbs
40Certain glycol ethersN230402 lbs0 lbs402 lbs
41Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
42Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
43Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
44Lead And Lead CompoundsN420204 lbs17 lbs222 lbs
45Mercury compoundsN458200 lbs2 lbs203 lbs
46Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
47Cobalt compoundsN096131 lbs24 lbs155 lbs
48Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
49Lead compoundsN42047 lbs52 lbs99 lbs
50Dimethylamine124-40-390 lbs0 lbs90 lbs
51Anthracene120-12-744 lbs0 lbs44 lbs
52Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
53Antimony compoundsN01038 lbs0 lbs38 lbs
54Nickel7440-02-035 lbs0 lbs35 lbs
55Allyl alcohol107-18-634 lbs0 lbs34 lbs
56Nitric acid7697-37-230 lbs0 lbs30 lbs
57Benzo[g,h,i]perylene191-24-228 lbs0 lbs28 lbs
58tert-Butyl alcohol75-65-022 lbs0 lbs22 lbs
59Methoxone sodium salt3653-48-320 lbs0 lbs20 lbs
60Triethylamine121-44-817 lbs0 lbs17 lbs
61Acrolein107-02-813 lbs0 lbs13 lbs
62Mercury7439-97-612 lbs0 lbs12 lbs
63Hydroquinone123-31-99 lbs0 lbs9 lbs
64Diaminotoluene (mixed isomers)25376-45-84 lbs0 lbs4 lbs
65Pyridine110-86-13 lbs0 lbs3 lbs
66Chloroethane75-00-32 lbs0 lbs2 lbs
67p-Cresol106-44-52 lbs0 lbs2 lbs
68Trichloroethylene79-01-61 lbs0 lbs1 lbs
692,4-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, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 43 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (43 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 lbs177,549 lbs
4Hydrogen cyanide74-90-8103,731 lbs0 lbs103,731 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-950,799 lbs0 lbs50,799 lbs
6Ammonia7664-41-728,219 lbs1,027 lbs29,363 lbs
7Ozone10028-15-625,701 lbs0 lbs25,701 lbs
8Methanol67-56-1152 lbs0 lbs23,827 lbs
9Xylene (mixed isomers)1330-20-714,849 lbs0 lbs14,853 lbs
10Cyclohexane110-82-77,486 lbs0 lbs7,486 lbs
11Toluene108-88-36,118 lbs4 lbs6,133 lbs
12Benzene71-43-24,935 lbs4 lbs4,940 lbs
13Propylene115-07-13,529 lbs0 lbs3,529 lbs
14Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
151,2,4-Trimethylbenzene95-63-61,449 lbs0 lbs1,449 lbs
16Ethylbenzene100-41-41,412 lbs4 lbs1,419 lbs
17Zinc compoundsN98222 lbs27 lbs1,223 lbs
18Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
191,3-Butadiene106-99-0734 lbs0 lbs734 lbs
20Hydrogen sulfide7783-06-4715 lbs0 lbs718 lbs
21Ethylene74-85-1620 lbs0 lbs620 lbs
22n-Hexane110-54-3607 lbs0 lbs607 lbs
23Carbon disulfide75-15-0484 lbs0 lbs484 lbs
24Lead7439-92-1248 lbs23 lbs275 lbs
25Naphthalene91-20-3241 lbs0 lbs258 lbs
26Cumene98-82-8241 lbs0 lbs241 lbs
27Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0221 lbs0 lbs221 lbs
281,1,1,2-Tetrachloroethane630-20-6212 lbs0 lbs212 lbs
29Phenol108-95-2164 lbs0 lbs184 lbs
30Styrene100-42-5159 lbs0 lbs159 lbs
31Lead And Lead CompoundsN420128 lbs7 lbs150 lbs
32Polycyclic aromatic compoundsN59038 lbs0 lbs56 lbs
33Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
34Phenanthrene85-01-836 lbs0 lbs36 lbs
35Mercury And Mercury CompoundsN45829 lbs0 lbs31 lbs
36Dimethylamine124-40-323 lbs0 lbs23 lbs
37Anthracene120-12-71 lbs0 lbs14 lbs
38Chloroacetic acid79-11-810 lbs0 lbs10 lbs
39Methyl methacrylate80-62-610 lbs0 lbs10 lbs
40Benzo[g,h,i]perylene191-24-28 lbs0 lbs8 lbs
41Vinyl acetate108-05-45 lbs0 lbs5 lbs
42Acetaldehyde75-07-01 lbs0 lbs1 lbs
43Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs

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