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
2545 APPELT BLVD HOUSTON 77015
Elevation
21.31 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: 11.31 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 84% 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)
1.9 million lbs
Extremely High
291.3x more than typical Houston property
≈ 95 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)
1.88 million lbs
Extremely High
389.5x 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)
22 thousand 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)1,900,603 lbs1,878,382 lbs22,221 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)242,341 lbs231,570 lbs972 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 84% 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):

m-Cresol, 2,4-Dimethylphenol, p-Cresol, o-Cresol, Phenol

View the full list of 43 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (43 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1m-Cresol108-39-445,935 lbs6,586 lbs5,666,444 lbs
22,4-Dimethylphenol105-67-913,055 lbs965 lbs4,229,319 lbs
3p-Cresol106-44-538,298 lbs3,292 lbs3,009,676 lbs
4o-Cresol95-48-725,461 lbs1,579 lbs1,765,196 lbs
5Phenol108-95-217,879 lbs3,104 lbs1,051,635 lbs
6Ethylene74-85-1497,353 lbs0 lbs497,353 lbs
7Ethylene glycol107-21-1342,485 lbs0 lbs342,485 lbs
8Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0199,665 lbs0 lbs199,665 lbs
9Aluminum (fume or dust)7429-90-5132,303 lbs0 lbs132,313 lbs
10n-Hexane110-54-3110,624 lbs51 lbs110,715 lbs
11Chlorine7782-50-595,339 lbs0 lbs95,344 lbs
12Chlorodifluoromethane (HCFC-22)75-45-646,271 lbs0 lbs46,271 lbs
13Cyclohexane110-82-734,808 lbs51 lbs34,909 lbs
14Hydrogen sulfide7783-06-431,340 lbs0 lbs31,340 lbs
15o-Toluidine95-53-429,521 lbs51 lbs30,113 lbs
16Chlorothalonil1897-45-629,974 lbs83 lbs30,057 lbs
17Ammonia7664-41-724,299 lbs3,477 lbs27,775 lbs
18Carbon disulfide75-15-027,720 lbs0 lbs27,720 lbs
19Toluene108-88-320,862 lbs530 lbs21,428 lbs
20Chloromethane74-87-315,422 lbs31 lbs15,478 lbs
21Chloroethane75-00-314,708 lbs41 lbs14,784 lbs
22Carbon tetrachloride56-23-514,345 lbs12 lbs14,358 lbs
23Diaminotoluene (mixed isomers)25376-45-812,695 lbs51 lbs12,797 lbs
24m-Xylene108-38-311,963 lbs54 lbs12,017 lbs
25Vanadium compoundsN7706,236 lbs2,153 lbs8,389 lbs
26Xylene (mixed isomers)1330-20-77,349 lbs0 lbs7,349 lbs
27Aniline62-53-36,824 lbs25 lbs7,119 lbs
28Biphenyl92-52-46,522 lbs15 lbs6,552 lbs
29Benzene71-43-25,382 lbs0 lbs5,382 lbs
30Ethylbenzene100-41-44,229 lbs0 lbs4,229 lbs
31Hydrogen cyanide74-90-83,231 lbs0 lbs3,231 lbs
32Zinc compoundsN9822,924 lbs15 lbs2,955 lbs
33Methanol67-56-11,071 lbs0 lbs1,071 lbs
34Hexachlorobenzene118-74-11,002 lbs1 lbs1,003 lbs
35Naphthalene91-20-3827 lbs0 lbs828 lbs
36Propylene115-07-1179 lbs0 lbs179 lbs
371,3-Butadiene106-99-0126 lbs0 lbs126 lbs
38Cumene98-82-8107 lbs0 lbs108 lbs
39Dioxin and dioxin-like compoundsN15039 lbs0 lbs39 lbs
40Lead7439-92-14 lbs20 lbs23 lbs
41Lead compoundsN4203 lbs17 lbs21 lbs
42Lead And Lead CompoundsN4201 lbs16 lbs18 lbs
43Mercury7439-97-60 lbs0 lbs2 lbs

Top chemicals released near this property (2024 only):

Ethylene glycol, Ethylene, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Aluminum (fume or dust), n-Hexane

View the full list of 24 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (24 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene glycol107-21-1110,903 lbs0 lbs110,903 lbs
2Ethylene74-85-143,785 lbs0 lbs43,785 lbs
3Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-019,612 lbs0 lbs19,612 lbs
4Aluminum (fume or dust)7429-90-513,724 lbs0 lbs13,724 lbs
5n-Hexane110-54-38,159 lbs5 lbs8,169 lbs
6m-Cresol108-39-45,580 lbs416 lbs7,579 lbs
72,4-Dimethylphenol105-67-91,591 lbs64 lbs7,241 lbs
8p-Cresol106-44-54,895 lbs208 lbs5,894 lbs
9o-Toluidine95-53-44,008 lbs5 lbs4,018 lbs
10o-Cresol95-48-73,192 lbs103 lbs3,937 lbs
11Phenol108-95-22,525 lbs151 lbs3,053 lbs
12Hydrogen sulfide7783-06-42,619 lbs0 lbs2,619 lbs
13Carbon disulfide75-15-01,835 lbs0 lbs2,484 lbs
14Cyclohexane110-82-72,334 lbs5 lbs2,398 lbs
15Chloroethane75-00-32,102 lbs5 lbs2,107 lbs
16Chloromethane74-87-31,938 lbs5 lbs1,943 lbs
17Diaminotoluene (mixed isomers)25376-45-81,821 lbs5 lbs1,831 lbs
18Chlorine7782-50-5438 lbs0 lbs438 lbs
19Xylene (mixed isomers)1330-20-7130 lbs0 lbs158 lbs
20Toluene108-88-3143 lbs0 lbs152 lbs
21Naphthalene91-20-3108 lbs0 lbs137 lbs
22Benzene71-43-282 lbs0 lbs91 lbs
23Ethylbenzene100-41-422 lbs0 lbs40 lbs
24Cumene98-82-825 lbs0 lbs27 lbs

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