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
9538 CATLETT LN LA PORTE 77571
Building Size
1,241 sqft
Total structure area from HCAD building records.
Elevation
23.65 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: 13.65 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 80% 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)
853 thousand lbs
Extremely High
130.8x more than typical Houston property
≈ 43 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)
842 thousand lbs
Extremely High
174.6x 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)
11 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)853,090 lbs841,965 lbs11,125 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)754,916 lbs57,233 lbs657 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 80% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile (top 25% most polluted).

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

Nitric acid, Ammonia, Methanol, Molybdenum trioxide, Nitrate compounds (water dissociable; reportable only when in aqueous solution)

View the full list of 36 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (36 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitric acid7697-37-2397,654 lbs55 lbs397,734 lbs
2Ammonia7664-41-7395,794 lbs123 lbs395,937 lbs
3Methanol67-56-19,356 lbs0 lbs15,883 lbs
4Molybdenum trioxide1313-27-510,410 lbs62 lbs10,487 lbs
5Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
6n-Hexane110-54-37,167 lbs0 lbs7,167 lbs
7Cobalt And Cobalt CompoundsN0964,251 lbs37 lbs4,288 lbs
8Nickel And Nickel CompoundsN4954,176 lbs41 lbs4,217 lbs
9Nickel compoundsN4951,910 lbs756 lbs2,681 lbs
10Cobalt compoundsN0961,910 lbs20 lbs1,945 lbs
11Dimethylamine124-40-31,745 lbs0 lbs1,745 lbs
12Certain glycol ethersN2301,449 lbs0 lbs1,450 lbs
131,2,4-Trimethylbenzene95-63-6971 lbs0 lbs971 lbs
14Xylene (mixed isomers)1330-20-7874 lbs0 lbs874 lbs
15Cyclohexane110-82-7857 lbs0 lbs857 lbs
16Toluene108-88-3809 lbs0 lbs809 lbs
17Ethylene oxide75-21-8791 lbs0 lbs791 lbs
18Maleic anhydride108-31-6612 lbs0 lbs612 lbs
19Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
20Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
21Bifenthrin82657-04-3149 lbs0 lbs149 lbs
22Formaldehyde50-00-046 lbs102 lbs148 lbs
23Lead compoundsN420138 lbs4 lbs142 lbs
24Propylene oxide75-56-9132 lbs0 lbs132 lbs
25Ethylbenzene100-41-494 lbs0 lbs94 lbs
26Diphenylamine122-39-487 lbs0 lbs87 lbs
27Cumene98-82-868 lbs0 lbs68 lbs
28Cyanide compoundsN1065 lbs0 lbs58 lbs
29Chloromethane74-87-351 lbs0 lbs51 lbs
30Naphthalene91-20-333 lbs0 lbs33 lbs
31tert-Butyl alcohol75-65-023 lbs0 lbs23 lbs
32Oxyfluorfen42874-03-310 lbs0 lbs10 lbs
33Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
34Methyl methacrylate80-62-62 lbs0 lbs2 lbs
35Ethylene glycol107-21-11 lbs0 lbs1 lbs
36n-Butyl alcohol71-36-31 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Molybdenum trioxide, Ammonia, 1,2,4-Trimethylbenzene, Copper

View the full list of 28 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (28 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-11,986 lbs0 lbs510,450 lbs
2Molybdenum trioxide1313-27-5158 lbs8 lbs46,708 lbs
3Ammonia7664-41-744,465 lbs5 lbs46,065 lbs
41,2,4-Trimethylbenzene95-63-674 lbs0 lbs44,010 lbs
5Copper7440-50-80 lbs0 lbs27,230 lbs
6Toluene108-88-316 lbs0 lbs14,037 lbs
7Xylene (mixed isomers)1330-20-739 lbs0 lbs13,258 lbs
8Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
9Nonylphenol EthoxylatesN5350 lbs0 lbs11,809 lbs
10Nitric acid7697-37-29,488 lbs5 lbs9,498 lbs
11Naphthalene91-20-30 lbs0 lbs4,065 lbs
12Ethylene oxide75-21-863 lbs0 lbs2,763 lbs
13Cumene98-82-84 lbs0 lbs2,713 lbs
14Ethylbenzene100-41-44 lbs0 lbs2,643 lbs
15Styrene100-42-50 lbs0 lbs1,734 lbs
16Ethylene glycol107-21-10 lbs0 lbs1,138 lbs
17Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
18Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
19n-Hexane110-54-3607 lbs0 lbs631 lbs
20Formaldehyde50-00-03 lbs0 lbs513 lbs
21Maleic anhydride108-31-68 lbs0 lbs414 lbs
22Cyclohexane110-82-724 lbs0 lbs315 lbs
23Dimethylamine124-40-3113 lbs0 lbs113 lbs
24Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
25Methyl methacrylate80-62-60 lbs0 lbs4 lbs
26Acrylonitrile107-13-10 lbs0 lbs4 lbs
27Aniline62-53-30 lbs0 lbs2 lbs
28Propylene oxide75-56-91 lbs0 lbs1 lbs

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