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
9721 YUMA ST A / B HOUSTON 77029
Building Size
1,782 sqft
Total structure area from HCAD building records.
Elevation
28.34 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: 18.34 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)
15.75 million lbs
Extremely High
2413.4x more than typical Houston property
≈ 787 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)
2.71 million lbs
Extremely High
562.6x 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)15,745,526 lbs2,712,888 lbs13,032,638 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,856,169 lbs209,363 lbs2,052,752 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, Ammonia, Xylene (mixed isomers), n-Butyl alcohol

View the full list of 59 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (59 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
3Ammonia7664-41-7285,213 lbs8,000 lbs293,213 lbs
4Xylene (mixed isomers)1330-20-7159,032 lbs0 lbs159,032 lbs
5n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
6Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
7Toluene108-88-394,758 lbs17 lbs94,775 lbs
8n-Hexane110-54-382,184 lbs0 lbs82,184 lbs
9Cyclohexane110-82-780,274 lbs0 lbs80,274 lbs
10Benzene71-43-264,550 lbs10 lbs64,560 lbs
11Propylene115-07-154,163 lbs0 lbs54,163 lbs
12Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
13Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
14Hydrogen sulfide7783-06-417,681 lbs3,527 lbs21,208 lbs
15Ethylbenzene100-41-420,678 lbs50 lbs20,729 lbs
161,2,4-Trimethylbenzene95-63-617,411 lbs0 lbs17,555 lbs
17Ethylene74-85-116,593 lbs0 lbs16,593 lbs
18Ethylene glycol107-21-114,689 lbs0 lbs14,689 lbs
19Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
201,4-Dioxane123-91-110,779 lbs0 lbs10,779 lbs
21Carbon disulfide75-15-08,557 lbs0 lbs8,557 lbs
221,3-Butadiene106-99-08,274 lbs0 lbs8,274 lbs
23Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-96,697 lbs0 lbs6,697 lbs
24Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
25Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
26Manganese7439-96-55,228 lbs331 lbs5,559 lbs
27Naphthalene91-20-34,546 lbs0 lbs4,547 lbs
28Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
29Phenol108-95-21,635 lbs1,804 lbs3,439 lbs
30Zinc compoundsN982233 lbs1,142 lbs2,866 lbs
31Polycyclic aromatic compoundsN5902,356 lbs1 lbs2,365 lbs
32Styrene100-42-52,274 lbs0 lbs2,275 lbs
33Cumene98-82-82,256 lbs0 lbs2,256 lbs
34Phthalic anhydride85-44-92,000 lbs0 lbs2,000 lbs
35Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
36Nickel compoundsN495654 lbs489 lbs1,143 lbs
37Lead7439-92-1713 lbs339 lbs1,052 lbs
38Phenanthrene85-01-8937 lbs0 lbs937 lbs
39Vanadium compoundsN77079 lbs509 lbs588 lbs
40Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0461 lbs0 lbs461 lbs
41Certain glycol ethersN230402 lbs0 lbs402 lbs
42Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
43Methanol67-56-1314 lbs0 lbs314 lbs
44Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
45Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
46Mercury compoundsN458197 lbs1 lbs199 lbs
47Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
48Cobalt compoundsN096131 lbs24 lbs155 lbs
49Lead And Lead CompoundsN420142 lbs7 lbs149 lbs
50Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
51Lead compoundsN42047 lbs52 lbs99 lbs
52Anthracene120-12-744 lbs0 lbs44 lbs
53Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
54Antimony compoundsN01038 lbs0 lbs38 lbs
55Nickel7440-02-035 lbs0 lbs35 lbs
56Nitric acid7697-37-230 lbs0 lbs30 lbs
57Benzo[g,h,i]perylene191-24-228 lbs0 lbs28 lbs
58Mercury7439-97-612 lbs0 lbs12 lbs
59tert-Butyl alcohol75-65-07 lbs0 lbs7 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, Ammonia

View the full list of 38 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (38 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
5Ammonia7664-41-728,112 lbs1,027 lbs29,256 lbs
6Ozone10028-15-625,701 lbs0 lbs25,701 lbs
7Methanol67-56-10 lbs0 lbs23,675 lbs
8Xylene (mixed isomers)1330-20-714,849 lbs0 lbs14,853 lbs
9Cyclohexane110-82-77,486 lbs0 lbs7,486 lbs
10Toluene108-88-36,118 lbs4 lbs6,132 lbs
11Benzene71-43-24,935 lbs4 lbs4,940 lbs
12Propylene115-07-13,529 lbs0 lbs3,529 lbs
13Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
141,2,4-Trimethylbenzene95-63-61,449 lbs0 lbs1,449 lbs
15Ethylbenzene100-41-41,412 lbs4 lbs1,419 lbs
16Zinc compoundsN98222 lbs27 lbs1,223 lbs
17Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
181,3-Butadiene106-99-0734 lbs0 lbs734 lbs
19Ethylene74-85-1620 lbs0 lbs620 lbs
20n-Hexane110-54-3607 lbs0 lbs607 lbs
21Lead7439-92-1248 lbs23 lbs275 lbs
22Naphthalene91-20-3241 lbs0 lbs258 lbs
23Carbon disulfide75-15-0243 lbs0 lbs243 lbs
24Cumene98-82-8241 lbs0 lbs241 lbs
25Phenol108-95-2164 lbs0 lbs184 lbs
26Styrene100-42-5159 lbs0 lbs159 lbs
27Hydrogen sulfide7783-06-4123 lbs0 lbs126 lbs
28Lead And Lead CompoundsN42096 lbs2 lbs113 lbs
29Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9101 lbs0 lbs101 lbs
30Polycyclic aromatic compoundsN59038 lbs0 lbs56 lbs
31Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
32Phenanthrene85-01-836 lbs0 lbs36 lbs
33Mercury And Mercury CompoundsN45829 lbs0 lbs31 lbs
34Anthracene120-12-71 lbs0 lbs14 lbs
35Methyl methacrylate80-62-610 lbs0 lbs10 lbs
36Chloroacetic acid79-11-810 lbs0 lbs10 lbs
37Benzo[g,h,i]perylene191-24-28 lbs0 lbs8 lbs
38Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs

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