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
200 S 4TH ST HIGHLANDS 77562
Building Size
1,343 sqft
Total structure area from HCAD building records.
Elevation
32.75 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: 22.75 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 67% 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)
156 thousand lbs
High
23.9x more than typical Houston property
≈ 8 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)
155 thousand lbs
High
32.2x 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)
700 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)155,848 lbs155,149 lbs700 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)26,422 lbs14,410 lbs11 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 67% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 30-39th percentile (higher than average pollution).

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

Xylene (mixed isomers), n-Butyl alcohol, Toluene, Ethylbenzene, 1,3-Butadiene

View the full list of 26 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (26 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Xylene (mixed isomers)1330-20-781,614 lbs6 lbs81,620 lbs
2n-Butyl alcohol71-36-316,200 lbs0 lbs16,200 lbs
3Toluene108-88-39,560 lbs7 lbs9,567 lbs
4Ethylbenzene100-41-49,492 lbs6 lbs9,498 lbs
51,3-Butadiene106-99-06,595 lbs0 lbs6,595 lbs
61,2,4-Trimethylbenzene95-63-66,571 lbs6 lbs6,577 lbs
7Benzene71-43-26,369 lbs7 lbs6,376 lbs
8Ethylene glycol107-21-15,755 lbs0 lbs5,755 lbs
9Vinyl acetate108-05-43,273 lbs0 lbs3,273 lbs
10Propylene oxide75-56-92,129 lbs0 lbs2,129 lbs
11Propylene115-07-11,802 lbs0 lbs1,802 lbs
12Methanol67-56-11,575 lbs0 lbs1,575 lbs
13n-Hexane110-54-31,015 lbs6 lbs1,021 lbs
14Manganese7439-96-5500 lbs270 lbs770 lbs
15Hydrogen sulfide7783-06-4750 lbs5 lbs755 lbs
16Styrene100-42-5547 lbs0 lbs547 lbs
17Ammonia7664-41-7261 lbs250 lbs511 lbs
18p-Xylene106-42-3500 lbs0 lbs500 lbs
19Cyclohexane110-82-7255 lbs5 lbs260 lbs
20Polycyclic aromatic compoundsN590147 lbs2 lbs149 lbs
21Lead7439-92-115 lbs113 lbs128 lbs
22Zinc compoundsN982110 lbs10 lbs125 lbs
23Dicyclopentadiene77-73-650 lbs5 lbs55 lbs
24Sodium nitrite7632-00-050 lbs0 lbs50 lbs
25MixtureMIXTURE10 lbs0 lbs10 lbs
26Methyl methacrylate80-62-65 lbs0 lbs5 lbs

Top chemicals released near this property (2024 only):

Vinyl acetate, Xylene (mixed isomers), 1,3-Butadiene, p-Xylene, Benzene

View the full list of 8 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (8 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Vinyl acetate108-05-4250 lbs0 lbs12,250 lbs
2Xylene (mixed isomers)1330-20-711,300 lbs0 lbs11,300 lbs
31,3-Butadiene106-99-01,845 lbs0 lbs1,845 lbs
4p-Xylene106-42-3500 lbs0 lbs500 lbs
5Benzene71-43-2255 lbs1 lbs256 lbs
6Propylene oxide75-56-9250 lbs0 lbs250 lbs
7Zinc compoundsN98210 lbs5 lbs15 lbs
8Lead7439-92-10 lbs5 lbs6 lbs

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