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
5113 CRESTWAY DR LA PORTE 77571
Building Size
2,973 sqft
Total structure area from HCAD building records.
Elevation
22.06 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: 12.06 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)
2.26 million lbs
Extremely High
347.2x more than typical Houston property
≈ 113 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)
2.25 million lbs
Extremely High
467.4x 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)
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)2,264,970 lbs2,253,845 lbs11,125 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)528,680 lbs243,414 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 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):

n-Hexane, Ammonia, Nitric acid, Ethylene, Molybdenum trioxide

View the full list of 32 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (32 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1n-Hexane110-54-31,013,131 lbs0 lbs1,013,131 lbs
2Ammonia7664-41-7413,789 lbs123 lbs413,932 lbs
3Nitric acid7697-37-2397,602 lbs55 lbs397,682 lbs
4Ethylene74-85-1397,288 lbs0 lbs397,288 lbs
5Molybdenum trioxide1313-27-510,410 lbs62 lbs10,487 lbs
6Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51130 lbs9,885 lbs9,930 lbs
7Cobalt And Cobalt CompoundsN0964,251 lbs37 lbs4,288 lbs
8Nickel And Nickel CompoundsN4954,176 lbs41 lbs4,217 lbs
9Methanol67-56-13,226 lbs0 lbs3,226 lbs
10Nickel compoundsN4951,910 lbs756 lbs2,681 lbs
11Cobalt compoundsN0961,910 lbs20 lbs1,945 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
15Toluene108-88-3807 lbs0 lbs807 lbs
16Ethylene oxide75-21-8791 lbs0 lbs791 lbs
17Cyclohexane110-82-7377 lbs0 lbs377 lbs
18Lead And Lead CompoundsN420211 lbs10 lbs221 lbs
19Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040145 lbs30 lbs175 lbs
20Formaldehyde50-00-046 lbs102 lbs148 lbs
21Lead compoundsN420138 lbs4 lbs142 lbs
22Ethylbenzene100-41-494 lbs0 lbs94 lbs
23Cumene98-82-868 lbs0 lbs68 lbs
24Chloromethane74-87-351 lbs0 lbs51 lbs
25Chromium7440-47-345 lbs0 lbs45 lbs
26Naphthalene91-20-333 lbs0 lbs33 lbs
27Propylene oxide75-56-914 lbs0 lbs14 lbs
28Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
29Methyl methacrylate80-62-62 lbs0 lbs2 lbs
30Maleic anhydride108-31-61 lbs0 lbs1 lbs
31Ethylene glycol107-21-11 lbs0 lbs1 lbs
32n-Butyl alcohol71-36-31 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

n-Hexane, Methanol, Ethylene, Ammonia, Molybdenum trioxide

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)
1n-Hexane110-54-3116,540 lbs0 lbs117,040 lbs
2Methanol67-56-1139 lbs0 lbs95,716 lbs
3Ethylene74-85-171,321 lbs0 lbs71,321 lbs
4Ammonia7664-41-745,360 lbs5 lbs46,960 lbs
5Molybdenum trioxide1313-27-5158 lbs8 lbs46,708 lbs
61,2,4-Trimethylbenzene95-63-674 lbs0 lbs44,010 lbs
7Copper7440-50-80 lbs0 lbs27,230 lbs
8Toluene108-88-316 lbs0 lbs14,037 lbs
9Xylene (mixed isomers)1330-20-739 lbs0 lbs13,258 lbs
10Nickel And Nickel CompoundsN49582 lbs8 lbs12,690 lbs
11Nonylphenol EthoxylatesN5350 lbs0 lbs11,809 lbs
12Nitric acid7697-37-29,488 lbs5 lbs9,498 lbs
13Naphthalene91-20-30 lbs0 lbs4,065 lbs
14Ethylene oxide75-21-863 lbs0 lbs2,763 lbs
15Cumene98-82-84 lbs0 lbs2,713 lbs
16Ethylbenzene100-41-44 lbs0 lbs2,643 lbs
17Styrene100-42-50 lbs0 lbs1,734 lbs
18Ethylene glycol107-21-10 lbs0 lbs1,138 lbs
19Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs622 lbs1,122 lbs
20Cobalt And Cobalt CompoundsN09682 lbs8 lbs917 lbs
21Formaldehyde50-00-03 lbs0 lbs513 lbs
22Maleic anhydride108-31-60 lbs0 lbs400 lbs
23Cyclohexane110-82-724 lbs0 lbs315 lbs
24Lead And Lead CompoundsN42016 lbs1 lbs68 lbs
25Acrylonitrile107-13-10 lbs0 lbs4 lbs
26Methyl methacrylate80-62-60 lbs0 lbs4 lbs
27Aniline62-53-30 lbs0 lbs2 lbs
28Propylene oxide75-56-91 lbs0 lbs1 lbs

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