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
9306 CARLOW LN LA PORTE 77571
Building Size
1,608 sqft
Total structure area from HCAD building records.
Elevation
23.08 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: 13.08 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
Moderate
Higher pollution than 59% 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)
40 thousand lbs
Above Typical
6.1x more than typical Houston property
≈ 2 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)
40 thousand lbs
Above Typical
8.3x 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)
170 lbs
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)40,008 lbs39,838 lbs170 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)642,913 lbs6,422 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 59% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 40-49th percentile (slightly higher than average).

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

Methanol, Ammonia, n-Hexane, Dimethylamine, Certain glycol ethers

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)
1Methanol67-56-19,356 lbs0 lbs15,883 lbs
2Ammonia7664-41-714,301 lbs68 lbs14,369 lbs
3n-Hexane110-54-37,167 lbs0 lbs7,167 lbs
4Dimethylamine124-40-31,745 lbs0 lbs1,745 lbs
5Certain glycol ethersN2301,449 lbs0 lbs1,450 lbs
61,2,4-Trimethylbenzene95-63-6971 lbs0 lbs971 lbs
7Xylene (mixed isomers)1330-20-7874 lbs0 lbs874 lbs
8Cyclohexane110-82-7857 lbs0 lbs857 lbs
9Toluene108-88-3809 lbs0 lbs809 lbs
10Ethylene oxide75-21-8791 lbs0 lbs791 lbs
11Maleic anhydride108-31-6612 lbs0 lbs612 lbs
12Nitric acid7697-37-2201 lbs0 lbs201 lbs
13Bifenthrin82657-04-3149 lbs0 lbs149 lbs
14Formaldehyde50-00-046 lbs102 lbs148 lbs
15Propylene oxide75-56-9132 lbs0 lbs132 lbs
16Ethylbenzene100-41-494 lbs0 lbs94 lbs
17Diphenylamine122-39-487 lbs0 lbs87 lbs
18Cumene98-82-868 lbs0 lbs68 lbs
19Cyanide compoundsN1065 lbs0 lbs58 lbs
20Chloromethane74-87-351 lbs0 lbs51 lbs
21Naphthalene91-20-333 lbs0 lbs33 lbs
22tert-Butyl alcohol75-65-023 lbs0 lbs23 lbs
23Oxyfluorfen42874-03-310 lbs0 lbs10 lbs
24Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
25Methyl methacrylate80-62-62 lbs0 lbs2 lbs
26Ethylene glycol107-21-11 lbs0 lbs1 lbs
27n-Butyl alcohol71-36-31 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, 1,2,4-Trimethylbenzene, Copper, Toluene, Xylene (mixed isomers)

View the full list of 22 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (22 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-11,986 lbs0 lbs510,450 lbs
21,2,4-Trimethylbenzene95-63-674 lbs0 lbs44,010 lbs
3Copper7440-50-80 lbs0 lbs27,230 lbs
4Toluene108-88-316 lbs0 lbs14,037 lbs
5Xylene (mixed isomers)1330-20-739 lbs0 lbs13,258 lbs
6Nonylphenol EthoxylatesN5350 lbs0 lbs11,809 lbs
7Ammonia7664-41-73,480 lbs0 lbs5,065 lbs
8Naphthalene91-20-30 lbs0 lbs4,065 lbs
9Ethylene oxide75-21-863 lbs0 lbs2,763 lbs
10Cumene98-82-84 lbs0 lbs2,713 lbs
11Ethylbenzene100-41-44 lbs0 lbs2,643 lbs
12Styrene100-42-50 lbs0 lbs1,734 lbs
13Ethylene glycol107-21-10 lbs0 lbs1,138 lbs
14n-Hexane110-54-3607 lbs0 lbs631 lbs
15Formaldehyde50-00-03 lbs0 lbs513 lbs
16Maleic anhydride108-31-68 lbs0 lbs414 lbs
17Cyclohexane110-82-724 lbs0 lbs315 lbs
18Dimethylamine124-40-3113 lbs0 lbs113 lbs
19Acrylonitrile107-13-10 lbs0 lbs4 lbs
20Methyl methacrylate80-62-60 lbs0 lbs4 lbs
21Aniline62-53-30 lbs0 lbs2 lbs
22Propylene oxide75-56-91 lbs0 lbs1 lbs

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