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
12940 MYRTLE LN HOUSTON 77015
Building Size
2,379 sqft
Total structure area from HCAD building records.
Elevation
24.62 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: 14.62 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 85% 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)
2.09 million lbs
Extremely High
320.6x more than typical Houston property
≈ 105 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)
2.03 million lbs
Extremely High
421.8x 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)
58 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)2,091,978 lbs2,034,056 lbs57,922 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)218,422 lbs172,119 lbs1,385 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 85% 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 56 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (56 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
6Ammonia7664-41-7671,337 lbs37,058 lbs708,395 lbs
7Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9278,278 lbs0 lbs278,278 lbs
81,3-Butadiene106-99-0203,018 lbs0 lbs203,018 lbs
9Ethylene74-85-1165,454 lbs0 lbs165,454 lbs
10Chlorine7782-50-588,504 lbs0 lbs88,504 lbs
11n-Hexane110-54-364,257 lbs9 lbs64,337 lbs
12Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-059,575 lbs0 lbs59,575 lbs
13Styrene100-42-559,223 lbs0 lbs59,223 lbs
14Chlorodifluoromethane (HCFC-22)75-45-646,271 lbs0 lbs46,271 lbs
15Hydrogen sulfide7783-06-431,339 lbs0 lbs31,339 lbs
16Chlorothalonil1897-45-629,974 lbs83 lbs30,057 lbs
17Xylene (mixed isomers)1330-20-728,097 lbs18 lbs28,186 lbs
18Carbon disulfide75-15-027,720 lbs0 lbs27,720 lbs
19Toluene108-88-322,615 lbs17 lbs23,295 lbs
20Cyclohexane110-82-716,388 lbs0 lbs16,388 lbs
21Carbon tetrachloride56-23-514,345 lbs12 lbs14,358 lbs
22Isoprene78-79-513,272 lbs0 lbs13,272 lbs
23Methanol67-56-112,158 lbs0 lbs12,158 lbs
24m-Xylene108-38-311,963 lbs54 lbs12,017 lbs
25Ethylbenzene100-41-411,814 lbs16 lbs11,867 lbs
26Benzene71-43-210,336 lbs9 lbs10,363 lbs
27Vanadium compoundsN7706,236 lbs2,153 lbs8,389 lbs
281,2,4-Trimethylbenzene95-63-63,593 lbs0 lbs3,664 lbs
29Biphenyl92-52-43,407 lbs0 lbs3,407 lbs
30Hydrogen cyanide74-90-83,231 lbs0 lbs3,231 lbs
31Manganese7439-96-51,668 lbs543 lbs2,211 lbs
32Chromium7440-47-31,182 lbs925 lbs2,106 lbs
33Nickel7440-02-01,350 lbs544 lbs1,894 lbs
34Manganese compoundsN450990 lbs262 lbs1,252 lbs
35Formic acid64-18-61,012 lbs0 lbs1,012 lbs
36Hexachlorobenzene118-74-11,002 lbs1 lbs1,003 lbs
37Certain glycol ethersN230903 lbs0 lbs903 lbs
38Chromium compounds (except for chromite ore mined in the Transvaal Region)N090410 lbs417 lbs828 lbs
39Nickel compoundsN495443 lbs250 lbs694 lbs
40Ethylene glycol107-21-1398 lbs0 lbs398 lbs
41Aluminum (fume or dust)7429-90-5250 lbs0 lbs250 lbs
42Copper7440-50-8250 lbs0 lbs250 lbs
43Cobalt7440-48-4250 lbs0 lbs250 lbs
44Phthalic anhydride85-44-9184 lbs0 lbs184 lbs
45Cumene98-82-8169 lbs0 lbs174 lbs
46Naphthalene91-20-3163 lbs0 lbs168 lbs
47Maleic anhydride108-31-6139 lbs0 lbs139 lbs
48Propylene115-07-1126 lbs0 lbs126 lbs
49Dioxin and dioxin-like compoundsN15039 lbs0 lbs39 lbs
50Anthracene120-12-731 lbs0 lbs31 lbs
51Nitric acid7697-37-228 lbs0 lbs28 lbs
52Polycyclic aromatic compoundsN59023 lbs0 lbs23 lbs
53Lead compoundsN4202 lbs11 lbs14 lbs
54Lead And Lead CompoundsN4200 lbs12 lbs12 lbs
55Nonylphenol EthoxylatesN53510 lbs0 lbs10 lbs
56Mercury7439-97-60 lbs0 lbs2 lbs

Top chemicals released near this property (2024 only):

Ammonia, 1,3-Butadiene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ethylene, m-Cresol

View the full list of 32 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (32 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-774,863 lbs93 lbs101,614 lbs
21,3-Butadiene106-99-032,375 lbs0 lbs32,375 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,245 lbs0 lbs17,245 lbs
4Ethylene74-85-114,466 lbs0 lbs14,466 lbs
5m-Cresol108-39-45,580 lbs416 lbs7,579 lbs
62,4-Dimethylphenol105-67-91,591 lbs64 lbs7,241 lbs
7Vanadium compoundsN7700 lbs0 lbs6,689 lbs
8p-Cresol106-44-54,895 lbs208 lbs5,894 lbs
9o-Cresol95-48-73,192 lbs103 lbs3,937 lbs
10n-Hexane110-54-33,420 lbs0 lbs3,491 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
14Isoprene78-79-52,371 lbs0 lbs2,371 lbs
15Toluene108-88-3834 lbs8 lbs1,505 lbs
16Methanol67-56-11,343 lbs0 lbs1,343 lbs
17Cyclohexane110-82-71,053 lbs0 lbs1,053 lbs
18Lead And Lead CompoundsN4200 lbs5 lbs788 lbs
19Benzene71-43-2545 lbs2 lbs568 lbs
20Xylene (mixed isomers)1330-20-7280 lbs8 lbs360 lbs
21Manganese7439-96-5162 lbs86 lbs248 lbs
22Chromium7440-47-371 lbs144 lbs215 lbs
23Certain glycol ethersN230214 lbs0 lbs214 lbs
24Nickel7440-02-0108 lbs86 lbs202 lbs
251,2,4-Trimethylbenzene95-63-6114 lbs0 lbs185 lbs
26Formic acid64-18-6173 lbs0 lbs173 lbs
27Ethylbenzene100-41-4125 lbs8 lbs170 lbs
28Lead compoundsN4200 lbs3 lbs164 lbs
29Propylene115-07-183 lbs0 lbs83 lbs
30Mercury compoundsN4580 lbs0 lbs46 lbs
31Cumene98-82-825 lbs0 lbs30 lbs
32Naphthalene91-20-311 lbs0 lbs17 lbs

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