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
704 N 13TH ST LA PORTE 77571
Building Size
1,670 sqft
Total structure area from HCAD building records.
Elevation
17.96 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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: 7.96 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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • 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 86% 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)
2.86 million lbs
Extremely High
439.1x more than typical Houston property
≈ 143 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)
1.92 million lbs
Extremely High
398.8x 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)
942 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)2,864,644 lbs1,922,986 lbs941,658 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,688,446 lbs113,908 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 86% 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, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ethylene, Vinyl acetate, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 48 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (48 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1826,103 lbs0 lbs1,085,103 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs911,682 lbs911,682 lbs
3Ethylene74-85-1339,669 lbs0 lbs339,669 lbs
4Vinyl acetate108-05-4119,429 lbs0 lbs257,039 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9216,585 lbs0 lbs216,585 lbs
6Ammonia7664-41-7104,768 lbs3,199 lbs107,967 lbs
7Formaldehyde50-00-063,808 lbs0 lbs63,808 lbs
8n-Butyl alcohol71-36-349,206 lbs0 lbs49,206 lbs
9Toluene108-88-346,261 lbs0 lbs46,261 lbs
10Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
11Copper compoundsN1001 lbs84 lbs29,084 lbs
12Sodium nitrite7632-00-00 lbs26,012 lbs26,012 lbs
13Xylene (mixed isomers)1330-20-711,137 lbs0 lbs25,482 lbs
14Hydrogen fluoride7664-39-319,001 lbs0 lbs19,001 lbs
15n-Hexane110-54-316,824 lbs0 lbs16,824 lbs
16Hydroquinone123-31-90 lbs0 lbs14,940 lbs
17Propylene115-07-113,154 lbs0 lbs13,154 lbs
18Chlorine7782-50-511,961 lbs0 lbs11,961 lbs
19Acetaldehyde75-07-03,797 lbs0 lbs10,027 lbs
20Acetonitrile75-05-87,091 lbs0 lbs7,091 lbs
21Dimethylamine124-40-37,035 lbs0 lbs7,035 lbs
22Dichloromethane75-09-25,688 lbs0 lbs5,688 lbs
23Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
24Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
25Methyl methacrylate80-62-63,435 lbs0 lbs3,435 lbs
26Chlorobenzene108-90-73,127 lbs0 lbs3,127 lbs
27Mercury7439-97-60 lbs0 lbs2,200 lbs
28Phosgene75-44-51,958 lbs0 lbs1,958 lbs
29Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
30Methyl tert-butyl ether1634-04-41,591 lbs0 lbs1,591 lbs
31Triethylamine121-44-81,515 lbs0 lbs1,515 lbs
32Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
33Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
34sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
35Ethylene oxide75-21-81,431 lbs0 lbs1,431 lbs
36Manganese7439-96-5511 lbs282 lbs793 lbs
37N,N-Dimethylformamide68-12-2535 lbs0 lbs535 lbs
38Propylene oxide75-56-9371 lbs0 lbs371 lbs
39Hexazinone51235-04-20 lbs212 lbs212 lbs
40Nickel7440-02-00 lbs152 lbs152 lbs
41Chromium7440-47-345 lbs25 lbs70 lbs
42Methyl acrylate96-33-355 lbs0 lbs55 lbs
43Ethylene glycol107-21-114 lbs0 lbs14 lbs
44Nickel compoundsN4954 lbs3 lbs8 lbs
45Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
46Butyl acrylate141-32-25 lbs0 lbs5 lbs
47Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs
48Methyl isocyanate624-83-91 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Aluminum oxide (fibrous forms), Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Chloroacetic acid, Vinyl acetate

View the full list of 25 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (25 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-144,884 lbs0 lbs1,217,948 lbs
2Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-929,545 lbs0 lbs29,545 lbs
4Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
5Vinyl acetate108-05-46,880 lbs0 lbs20,379 lbs
6Ethylene74-85-19,510 lbs0 lbs9,510 lbs
7Ammonia7664-41-77,795 lbs0 lbs8,021 lbs
8Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
9Formaldehyde50-00-03,559 lbs0 lbs5,799 lbs
10Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
11sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
12n-Butyl alcohol71-36-375 lbs0 lbs2,529 lbs
13Hydrogen fluoride7664-39-31,738 lbs0 lbs1,738 lbs
14Polycyclic aromatic compoundsN5900 lbs0 lbs1,652 lbs
15Chlorine7782-50-51,121 lbs0 lbs1,121 lbs
16Propylene115-07-1500 lbs0 lbs500 lbs
17Ethylene oxide75-21-8420 lbs0 lbs420 lbs
18Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
19Acrylic acid79-10-7186 lbs0 lbs192 lbs
20Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
21Propylene oxide75-56-960 lbs0 lbs60 lbs
22Phosgene75-44-527 lbs0 lbs27 lbs
23Acetaldehyde75-07-010 lbs0 lbs15 lbs
24Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
25Ethylene glycol107-21-13 lbs0 lbs9 lbs

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