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
7939 TUFFLY ST HOUSTON 77029
Building Size
1,590 sqft
Total structure area from HCAD building records.
Elevation
36.62 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: 26.62 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 79% 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)
694 thousand lbs
Extremely High
106.3x more than typical Houston property
≈ 35 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)
689 thousand lbs
Extremely High
142.8x 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)
5 thousand lbs
Very 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)693,691 lbs688,532 lbs5,159 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)187,078 lbs91,582 lbs597 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 79% 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):

Ammonia, Zinc compounds, n-Hexane, Toluene, 1,2,4-Trimethylbenzene

View the full list of 42 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (42 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ammonia7664-41-7295,214 lbs0 lbs295,214 lbs
2Zinc compoundsN982200,845 lbs4,584 lbs205,429 lbs
3n-Hexane110-54-3125,432 lbs0 lbs125,432 lbs
4Toluene108-88-323,465 lbs0 lbs23,465 lbs
51,2,4-Trimethylbenzene95-63-68,648 lbs0 lbs8,648 lbs
6Hydrogen sulfide7783-06-46,912 lbs0 lbs6,912 lbs
7Styrene100-42-55,535 lbs0 lbs5,536 lbs
8Manganese7439-96-54,397 lbs363 lbs4,759 lbs
9Lead compoundsN4203,065 lbs22 lbs3,087 lbs
10Cyclohexane110-82-72,389 lbs0 lbs2,389 lbs
11Copper compoundsN1002,022 lbs1 lbs2,023 lbs
12Polycyclic aromatic compoundsN5901,893 lbs2 lbs1,902 lbs
13Lead And Lead CompoundsN4201,553 lbs1 lbs1,554 lbs
14Xylene (mixed isomers)1330-20-71,434 lbs0 lbs1,434 lbs
15Phenol108-95-21,390 lbs0 lbs1,390 lbs
16Ethylene glycol107-21-1856 lbs0 lbs856 lbs
17Propylene115-07-1810 lbs0 lbs810 lbs
18Certain glycol ethersN230402 lbs0 lbs402 lbs
19Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
20Naphthalene91-20-3279 lbs0 lbs280 lbs
21Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
22Methanol67-56-1255 lbs0 lbs255 lbs
23Lead7439-92-1229 lbs25 lbs253 lbs
24Benzo[g,h,i]perylene191-24-2236 lbs0 lbs236 lbs
25Ethylbenzene100-41-4217 lbs0 lbs218 lbs
26Chromium compounds (except for chromite ore mined in the Transvaal Region)N090141 lbs15 lbs156 lbs
27DiisocyanatesN120101 lbs4 lbs105 lbs
28Nickel7440-02-059 lbs41 lbs100 lbs
29Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs67 lbs67 lbs
30Chromium7440-47-319 lbs12 lbs35 lbs
31Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09032 lbs1 lbs33 lbs
32Nitric acid7697-37-230 lbs0 lbs30 lbs
33Aluminum (fume or dust)7429-90-524 lbs0 lbs24 lbs
34Barium And Barium CompoundsN0400 lbs16 lbs16 lbs
35Manganese compoundsN45016 lbs0 lbs16 lbs
36Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51115 lbs0 lbs15 lbs
37Mercury7439-97-612 lbs0 lbs12 lbs
38Copper And Copper CompoundsN10010 lbs0 lbs10 lbs
39Copper7440-50-80 lbs6 lbs6 lbs
40Cobalt7440-48-40 lbs0 lbs4 lbs
41Molybdenum trioxide1313-27-51 lbs0 lbs1 lbs
42Dioxin and dioxin-like compoundsN1501 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Zinc compounds, Ammonia, Manganese, n-Hexane, Toluene

View the full list of 17 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (17 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Zinc compoundsN98212,507 lbs500 lbs82,310 lbs
2Ammonia7664-41-749,429 lbs0 lbs52,907 lbs
3Manganese7439-96-50 lbs41 lbs19,987 lbs
4n-Hexane110-54-312,290 lbs0 lbs12,290 lbs
5Toluene108-88-311,886 lbs0 lbs11,886 lbs
6Styrene100-42-52,239 lbs0 lbs2,239 lbs
7Nickel7440-02-00 lbs31 lbs2,080 lbs
8Xylene (mixed isomers)1330-20-71,434 lbs0 lbs1,434 lbs
91,2,4-Trimethylbenzene95-63-61,210 lbs0 lbs1,210 lbs
10Lead7439-92-1228 lbs3 lbs236 lbs
11Polycyclic aromatic compoundsN590152 lbs0 lbs180 lbs
12Lead And Lead CompoundsN420161 lbs0 lbs162 lbs
13Lead compoundsN4205 lbs3 lbs60 lbs
14Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs19 lbs53 lbs
15Benzo[g,h,i]perylene191-24-221 lbs0 lbs24 lbs
16Methyl methacrylate80-62-610 lbs0 lbs10 lbs
17Chloroacetic acid79-11-810 lbs0 lbs10 lbs

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