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
1639 VALLEY VIEW DR LA PORTE 77571
Building Size
3,348 sqft
Total structure area from HCAD building records.
Elevation
20.36 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: 10.36 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 89% 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)
6.25 million lbs
Extremely High
957.4x more than typical Houston property
≈ 312 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)
5.08 million lbs
Extremely High
1052.4x 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)
1.17 million 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)6,246,565 lbs5,075,183 lbs1,171,382 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,525,803 lbs338,236 lbs0 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 89% 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):

Methanol, Vinyl acetate, Ethylene, Propylene, Nitrate compounds (water dissociable; reportable only when in aqueous solution)

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)
1Methanol67-56-11,719,374 lbs228,964 lbs9,613,263 lbs
2Vinyl acetate108-05-4391,623 lbs0 lbs3,091,165 lbs
3Ethylene74-85-11,054,345 lbs0 lbs1,054,345 lbs
4Propylene115-07-1932,181 lbs0 lbs932,181 lbs
5Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs911,682 lbs911,682 lbs
6Acetaldehyde75-07-0193,009 lbs0 lbs528,044 lbs
7Hydroquinone123-31-90 lbs0 lbs430,145 lbs
8n-Hexane110-54-3353,716 lbs0 lbs353,716 lbs
9Ammonia7664-41-789,901 lbs3,199 lbs93,100 lbs
10Formaldehyde50-00-063,808 lbs0 lbs63,808 lbs
11Certain glycol ethersN23062,831 lbs0 lbs62,831 lbs
12Xylene (mixed isomers)1330-20-743,900 lbs0 lbs58,245 lbs
13n-Butyl alcohol71-36-348,101 lbs0 lbs48,101 lbs
14Toluene108-88-345,000 lbs0 lbs45,000 lbs
15Copper compoundsN1001 lbs84 lbs29,084 lbs
16Sodium nitrite7632-00-00 lbs26,012 lbs26,012 lbs
17Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
18Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
19Chlorine7782-50-59,153 lbs605 lbs9,758 lbs
20Dimethylamine124-40-37,035 lbs0 lbs7,035 lbs
21Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
22Methyl methacrylate80-62-65,482 lbs0 lbs5,482 lbs
23Dichloromethane75-09-25,437 lbs0 lbs5,437 lbs
24Acetonitrile75-05-85,326 lbs0 lbs5,326 lbs
25Mercury7439-97-60 lbs0 lbs2,200 lbs
26Methyl acrylate96-33-32,031 lbs0 lbs2,031 lbs
27Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
28Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
29Hydrogen fluoride7664-39-31,062 lbs0 lbs1,062 lbs
30Acrolein107-02-8810 lbs0 lbs810 lbs
31Manganese7439-96-50 lbs282 lbs282 lbs
32Naphthalene91-20-3245 lbs0 lbs245 lbs
331,3-Butadiene106-99-0217 lbs0 lbs217 lbs
34Ethylbenzene100-41-4216 lbs0 lbs216 lbs
35Hexazinone51235-04-20 lbs212 lbs212 lbs
36Zinc compoundsN9820 lbs155 lbs155 lbs
37Nickel7440-02-00 lbs152 lbs152 lbs
38Chromium7440-47-345 lbs25 lbs70 lbs
39sec-Butyl alcohol78-92-247 lbs0 lbs47 lbs
40Nickel compoundsN4954 lbs3 lbs8 lbs
41Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
42Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs
43Methyl isocyanate624-83-91 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Aluminum oxide (fibrous forms), Maleic anhydride, Ethylene, Acetaldehyde

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)
1Methanol67-56-149,331 lbs0 lbs1,597,257 lbs
2Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
3Maleic anhydride108-31-61,569 lbs0 lbs134,889 lbs
4Ethylene74-85-1101,985 lbs0 lbs101,985 lbs
5Acetaldehyde75-07-056,530 lbs0 lbs89,110 lbs
6Propylene115-07-183,854 lbs0 lbs83,854 lbs
7Vinyl acetate108-05-47,022 lbs0 lbs49,594 lbs
8Ammonia7664-41-75,791 lbs0 lbs44,183 lbs
9Hydroquinone123-31-90 lbs0 lbs28,819 lbs
10n-Hexane110-54-322,335 lbs0 lbs22,335 lbs
11Acrolein107-02-8209 lbs0 lbs7,515 lbs
12Formaldehyde50-00-03,559 lbs0 lbs5,799 lbs
13Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
14Polycyclic aromatic compoundsN5900 lbs0 lbs1,652 lbs
15Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
16Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
17Naphthalene91-20-3245 lbs0 lbs245 lbs
18Ethylbenzene100-41-4216 lbs0 lbs216 lbs
19Chlorine7782-50-5160 lbs0 lbs160 lbs
20Methyl methacrylate80-62-6142 lbs0 lbs142 lbs
21Ethylene glycol107-21-11 lbs0 lbs1 lbs

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