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
6105 ALLENDALE RD HOUSTON 77017
Elevation
28.97 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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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: 18.97 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
High
Higher pollution than 88% 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)
4.09 million lbs
Extremely High
627.6x more than typical Houston property
≈ 205 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)
4.09 million lbs
Extremely High
848.5x 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)
3 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)4,094,775 lbs4,091,620 lbs3,154 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)418,512 lbs322,015 lbs200 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 88% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile (top 15% most polluted).

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

Propylene, Hydrogen cyanide, Ammonia, n-Hexane, Ethylene

View the full list of 27 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (27 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Propylene115-07-1936,912 lbs0 lbs936,912 lbs
2Hydrogen cyanide74-90-8818,552 lbs0 lbs818,552 lbs
3Ammonia7664-41-7631,062 lbs0 lbs631,062 lbs
4n-Hexane110-54-3391,060 lbs0 lbs391,067 lbs
5Ethylene74-85-1292,319 lbs0 lbs292,319 lbs
6Xylene (mixed isomers)1330-20-7227,286 lbs627 lbs227,943 lbs
7Hydrogen sulfide7783-06-4206,443 lbs0 lbs206,443 lbs
8Benzene71-43-2203,264 lbs457 lbs203,732 lbs
9Toluene108-88-3164,253 lbs244 lbs164,521 lbs
10Diethanolamine111-42-2101,560 lbs0 lbs101,560 lbs
11Cyclohexane110-82-752,501 lbs0 lbs52,510 lbs
12Ethylbenzene100-41-427,301 lbs63 lbs27,372 lbs
131,3-Butadiene106-99-021,614 lbs0 lbs21,614 lbs
14Naphthalene91-20-34,683 lbs75 lbs4,766 lbs
15Polycyclic aromatic compoundsN5902,949 lbs526 lbs3,753 lbs
16Methanol67-56-13,468 lbs0 lbs3,468 lbs
171,2,4-Trimethylbenzene95-63-63,058 lbs0 lbs3,072 lbs
18Cumene98-82-81,572 lbs0 lbs1,574 lbs
19Styrene100-42-51,263 lbs0 lbs1,263 lbs
20Phenol108-95-20 lbs1,155 lbs1,155 lbs
21Biphenyl92-52-4345 lbs0 lbs364 lbs
22Mercury7439-97-677 lbs0 lbs77 lbs
23Isoprene78-79-560 lbs0 lbs60 lbs
24Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
25Ethylene glycol107-21-10 lbs0 lbs9 lbs
26Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
27Benzo[g,h,i]perylene191-24-20 lbs7 lbs7 lbs

Top chemicals released near this property (2024 only):

Diethanolamine, Ammonia, Hydrogen cyanide, n-Hexane, Propylene

View the full list of 29 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (29 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Diethanolamine111-42-210,082 lbs0 lbs85,611 lbs
2Ammonia7664-41-773,883 lbs0 lbs82,157 lbs
3Hydrogen cyanide74-90-873,728 lbs0 lbs73,728 lbs
4n-Hexane110-54-335,025 lbs0 lbs35,025 lbs
5Propylene115-07-133,225 lbs0 lbs33,225 lbs
6Xylene (mixed isomers)1330-20-726,533 lbs10 lbs26,557 lbs
7Ethylene74-85-116,725 lbs0 lbs16,725 lbs
8Benzene71-43-215,436 lbs110 lbs16,025 lbs
9Toluene108-88-315,450 lbs4 lbs15,506 lbs
10Hydrogen sulfide7783-06-413,422 lbs0 lbs13,422 lbs
11Ethylene glycol107-21-10 lbs0 lbs7,019 lbs
12Cyclohexane110-82-74,048 lbs0 lbs4,048 lbs
13Phenol108-95-20 lbs8 lbs2,825 lbs
14Ethylbenzene100-41-42,657 lbs1 lbs2,665 lbs
15Certain glycol ethersN2300 lbs0 lbs1,111 lbs
16Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
17Naphthalene91-20-3754 lbs7 lbs818 lbs
18Polycyclic aromatic compoundsN590360 lbs55 lbs427 lbs
19Cumene98-82-8284 lbs0 lbs284 lbs
201,2,4-Trimethylbenzene95-63-6222 lbs0 lbs222 lbs
21Styrene100-42-5103 lbs0 lbs103 lbs
22Biphenyl92-52-433 lbs0 lbs33 lbs
231,3-Butadiene106-99-028 lbs0 lbs28 lbs
24Lead7439-92-10 lbs0 lbs8 lbs
25Isoprene78-79-58 lbs0 lbs8 lbs
26Mercury7439-97-67 lbs0 lbs7 lbs
27Benzo[g,h,i]perylene191-24-20 lbs5 lbs5 lbs
28Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs
29Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs3 lbs

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