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
228 GRAND ST 6 CHANNELVIEW 77530
Elevation
28.06 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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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: 18.06 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
Moderate
Higher pollution than 74% 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)
430 thousand lbs
Very High
65.9x more than typical Houston property
≈ 21 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)
429 thousand lbs
Very High
89.1x 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)
357 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)429,853 lbs429,496 lbs357 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)121,936 lbs121,539 lbs53 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 74% 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):

Ethylene glycol, n-Hexane, Cyclohexane, Xylene (mixed isomers), Toluene

View the full list of 17 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (17 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene glycol107-21-1342,485 lbs0 lbs342,485 lbs
2n-Hexane110-54-326,801 lbs0 lbs29,244 lbs
3Cyclohexane110-82-717,804 lbs0 lbs23,388 lbs
4Xylene (mixed isomers)1330-20-711,460 lbs17 lbs18,940 lbs
5Toluene108-88-36,955 lbs92 lbs10,187 lbs
6Benzene71-43-28,405 lbs84 lbs10,060 lbs
7Ethylbenzene100-41-44,388 lbs4 lbs5,234 lbs
8Naphthalene91-20-32,624 lbs1 lbs4,790 lbs
9Chlorine7782-50-54,596 lbs0 lbs4,596 lbs
101,2,4-Trimethylbenzene95-63-6934 lbs2 lbs3,728 lbs
11Methanol67-56-11,071 lbs0 lbs1,071 lbs
12Chromium7440-47-3817 lbs87 lbs904 lbs
13Hydrogen sulfide7783-06-4726 lbs0 lbs726 lbs
14Nickel7440-02-0315 lbs64 lbs379 lbs
15Cumene98-82-8107 lbs0 lbs108 lbs
16Lead7439-92-13 lbs7 lbs10 lbs
17Zinc compoundsN9825 lbs0 lbs6 lbs

Top chemicals released near this property (2024 only):

Ethylene glycol, n-Hexane, Toluene, Xylene (mixed isomers), Benzene

View the full list of 12 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (12 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene glycol107-21-1110,903 lbs0 lbs110,903 lbs
2n-Hexane110-54-33,943 lbs0 lbs3,943 lbs
3Toluene108-88-31,758 lbs0 lbs1,882 lbs
4Xylene (mixed isomers)1330-20-71,488 lbs0 lbs1,523 lbs
5Benzene71-43-21,254 lbs0 lbs1,336 lbs
6Cyclohexane110-82-71,137 lbs0 lbs1,191 lbs
7Naphthalene91-20-3409 lbs0 lbs438 lbs
8Chlorine7782-50-5428 lbs0 lbs428 lbs
9Chromium7440-47-3136 lbs32 lbs167 lbs
10Nickel7440-02-036 lbs20 lbs57 lbs
11Ethylbenzene100-41-422 lbs0 lbs40 lbs
12Cumene98-82-825 lbs0 lbs27 lbs

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