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
7748 SHERMAN ST HOUSTON 77012
Building Size
1,142 sqft
Total structure area from HCAD building records.
Elevation
29.61 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: 19.61 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 80% 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)
896 thousand lbs
Extremely High
137.3x more than typical Houston property
≈ 45 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)
895 thousand lbs
Extremely High
185.6x 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)
676 lbs
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)895,568 lbs894,892 lbs676 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)721,812 lbs104,260 lbs27 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 80% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile (top 25% most polluted).

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

Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Zinc compounds, n-Hexane, Xylene (mixed isomers), Ammonia

View the full list of 54 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (54 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9376,938 lbs0 lbs376,938 lbs
2Zinc compoundsN982176,619 lbs26 lbs176,645 lbs
3n-Hexane110-54-3125,432 lbs0 lbs125,432 lbs
4Xylene (mixed isomers)1330-20-766,977 lbs0 lbs66,977 lbs
5Ammonia7664-41-751,735 lbs0 lbs51,735 lbs
6Toluene108-88-331,431 lbs0 lbs31,431 lbs
7Ethylene glycol107-21-115,546 lbs0 lbs15,546 lbs
81,4-Dioxane123-91-110,779 lbs0 lbs10,779 lbs
91,2,4-Trimethylbenzene95-63-68,648 lbs0 lbs8,648 lbs
10Hydrogen sulfide7783-06-46,306 lbs0 lbs6,306 lbs
11Manganese7439-96-55,230 lbs357 lbs5,587 lbs
12Lead compoundsN4203,031 lbs0 lbs3,031 lbs
13Cyclohexane110-82-72,390 lbs0 lbs2,390 lbs
14Copper compoundsN1002,021 lbs0 lbs2,021 lbs
15Phthalic anhydride85-44-92,000 lbs0 lbs2,000 lbs
16Lead And Lead CompoundsN4201,615 lbs10 lbs1,626 lbs
17Vinyl acetate108-05-41,608 lbs0 lbs1,608 lbs
18Acetaldehyde75-07-01,011 lbs0 lbs1,011 lbs
19Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0999 lbs0 lbs999 lbs
20Lead7439-92-1622 lbs259 lbs881 lbs
21Methanol67-56-1873 lbs0 lbs873 lbs
22Polycyclic aromatic compoundsN590723 lbs1 lbs732 lbs
231,1,1,2-Tetrachloroethane630-20-6434 lbs0 lbs434 lbs
24Nitric acid7697-37-2397 lbs0 lbs397 lbs
25Carbon disulfide75-15-0351 lbs0 lbs351 lbs
26Propylene115-07-1227 lbs0 lbs227 lbs
27Ethylbenzene100-41-4217 lbs0 lbs218 lbs
28Styrene100-42-5163 lbs0 lbs163 lbs
29Naphthalene91-20-3117 lbs0 lbs118 lbs
30Dimethylamine124-40-390 lbs0 lbs90 lbs
31Chromium compounds (except for chromite ore mined in the Transvaal Region)N09076 lbs0 lbs76 lbs
32Vanadium compoundsN77065 lbs0 lbs65 lbs
33Nickel7440-02-036 lbs4 lbs39 lbs
34Allyl alcohol107-18-634 lbs0 lbs34 lbs
35Methoxone sodium salt3653-48-320 lbs0 lbs20 lbs
36Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09019 lbs0 lbs19 lbs
37Triethylamine121-44-817 lbs0 lbs17 lbs
38Benzo[g,h,i]perylene191-24-215 lbs0 lbs15 lbs
39Chromium7440-47-33 lbs12 lbs15 lbs
40tert-Butyl alcohol75-65-015 lbs0 lbs15 lbs
41Acrolein107-02-813 lbs0 lbs13 lbs
42Copper And Copper CompoundsN10010 lbs0 lbs10 lbs
43Nickel compoundsN49510 lbs0 lbs10 lbs
44Hydroquinone123-31-99 lbs0 lbs9 lbs
45Copper7440-50-80 lbs6 lbs6 lbs
46Mercury compoundsN4583 lbs1 lbs4 lbs
47Diaminotoluene (mixed isomers)25376-45-84 lbs0 lbs4 lbs
48Pyridine110-86-13 lbs0 lbs3 lbs
49Benzene71-43-23 lbs0 lbs3 lbs
50Chloroethane75-00-32 lbs0 lbs2 lbs
51p-Cresol106-44-52 lbs0 lbs2 lbs
521,3-Butadiene106-99-01 lbs0 lbs1 lbs
53Trichloroethylene79-01-61 lbs0 lbs1 lbs
542,4-Diaminotoluene95-80-71 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

1,4-Dioxane, Ethylene glycol, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Methanol, Zinc compounds

View the full list of 21 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (21 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
11,4-Dioxane123-91-1328 lbs0 lbs396,851 lbs
2Ethylene glycol107-21-15,094 lbs0 lbs177,549 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-950,698 lbs0 lbs50,698 lbs
4Methanol67-56-1152 lbs0 lbs23,825 lbs
5Zinc compoundsN9829,014 lbs0 lbs20,571 lbs
6n-Hexane110-54-312,290 lbs0 lbs12,290 lbs
7Xylene (mixed isomers)1330-20-711,930 lbs0 lbs11,930 lbs
8Toluene108-88-311,886 lbs0 lbs11,886 lbs
9Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs11,416 lbs
10Lead And Lead CompoundsN420192 lbs5 lbs2,087 lbs
111,2,4-Trimethylbenzene95-63-61,210 lbs0 lbs1,210 lbs
12Hydrogen sulfide7783-06-4592 lbs0 lbs592 lbs
13Carbon disulfide75-15-0241 lbs0 lbs241 lbs
14Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0221 lbs0 lbs221 lbs
151,1,1,2-Tetrachloroethane630-20-6212 lbs0 lbs212 lbs
16Ammonia7664-41-7107 lbs0 lbs107 lbs
17Polycyclic aromatic compoundsN59037 lbs0 lbs55 lbs
18Lead7439-92-120 lbs22 lbs42 lbs
19Dimethylamine124-40-323 lbs0 lbs23 lbs
20Vinyl acetate108-05-45 lbs0 lbs5 lbs
21Acetaldehyde75-07-01 lbs0 lbs1 lbs

Explore More Properties