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
11104 MAIZE LN HOUSTON 77041
Building Size
4,460 sqft
Total structure area from HCAD building records.
Elevation
105.63 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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: 95.63 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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • 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 72% 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)
327 thousand lbs
Very High
50.1x more than typical Houston property
≈ 16 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)
319 thousand lbs
Very High
66.2x 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)
8 thousand lbs
Very 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)327,124 lbs319,239 lbs7,885 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)157,282 lbs9,895 lbs497 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 72% 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):

Vinyl acetate, Styrene, 1-Bromopropane, 1,2,4-Trimethylbenzene, Xylene (mixed isomers)

View the full list of 35 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (35 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Vinyl acetate108-05-462,144 lbs0 lbs62,144 lbs
2Styrene100-42-553,280 lbs0 lbs54,438 lbs
31-Bromopropane106-94-550,819 lbs0 lbs50,819 lbs
41,2,4-Trimethylbenzene95-63-646,078 lbs0 lbs46,078 lbs
5Xylene (mixed isomers)1330-20-736,427 lbs0 lbs36,427 lbs
6Toluene108-88-316,999 lbs0 lbs16,999 lbs
7Zinc compoundsN98210,828 lbs4,419 lbs15,247 lbs
8Methanol67-56-18,147 lbs0 lbs8,147 lbs
9NonylphenolN5305,359 lbs0 lbs5,359 lbs
10Manganese7439-96-53,393 lbs1,866 lbs5,259 lbs
11Phenol108-95-25,162 lbs0 lbs5,162 lbs
12Copper7440-50-83,104 lbs1,291 lbs4,395 lbs
13Nickel7440-02-03,267 lbs149 lbs3,426 lbs
14Chromium7440-47-33,203 lbs148 lbs3,376 lbs
15Nitric acid7697-37-22,693 lbs0 lbs2,693 lbs
16Propylene115-07-11,839 lbs0 lbs1,839 lbs
17Hydrogen fluoride7664-39-31,458 lbs0 lbs1,458 lbs
18Antimony compoundsN0101,359 lbs0 lbs1,359 lbs
19n-Butyl alcohol71-36-31,042 lbs0 lbs1,042 lbs
20Certain glycol ethersN230915 lbs0 lbs915 lbs
21DiisocyanatesN120688 lbs0 lbs688 lbs
22Methyl isobutyl ketone108-10-1630 lbs0 lbs630 lbs
23Formic acid64-18-6255 lbs0 lbs255 lbs
24Naphthalene91-20-330 lbs0 lbs30 lbs
25Lead compoundsN42017 lbs11 lbs28 lbs
26tert-Butyl alcohol75-65-027 lbs0 lbs27 lbs
27Ethylbenzene100-41-426 lbs0 lbs26 lbs
28Lead7439-92-119 lbs0 lbs19 lbs
29Antimony And Antimony CompoundsN01010 lbs0 lbs10 lbs
30Cobalt7440-48-48 lbs0 lbs8 lbs
31m-Xylene108-38-37 lbs0 lbs7 lbs
32Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs4 lbs
33Selenium7782-49-22 lbs0 lbs2 lbs
34Lead And Lead CompoundsN4201 lbs1 lbs2 lbs
35Cumene98-82-81 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Zinc compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ethylene glycol, 1-Bromopropane, Toluene

View the full list of 27 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (27 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Zinc compoundsN982187 lbs476 lbs93,397 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs28,746 lbs
3Ethylene glycol107-21-10 lbs0 lbs14,584 lbs
41-Bromopropane106-94-53,844 lbs0 lbs3,844 lbs
5Toluene108-88-31,266 lbs0 lbs2,086 lbs
6Vinyl acetate108-05-4819 lbs0 lbs2,008 lbs
7Certain glycol ethersN23033 lbs0 lbs1,563 lbs
81,2,4-Trimethylbenzene95-63-61,002 lbs0 lbs1,352 lbs
9Methanol67-56-1487 lbs0 lbs1,207 lbs
10Lead compoundsN4200 lbs0 lbs1,190 lbs
11Antimony compoundsN0100 lbs0 lbs1,189 lbs
12n-Butyl alcohol71-36-313 lbs0 lbs1,073 lbs
13Propylene115-07-11,059 lbs0 lbs1,059 lbs
14Xylene (mixed isomers)1330-20-788 lbs0 lbs908 lbs
15Ethylbenzene100-41-426 lbs0 lbs726 lbs
16Cyclohexane110-82-70 lbs0 lbs700 lbs
17Naphthalene91-20-30 lbs0 lbs480 lbs
18Hydrogen fluoride7664-39-3265 lbs0 lbs265 lbs
19Chromium7440-47-3208 lbs5 lbs253 lbs
20Nickel7440-02-0207 lbs5 lbs243 lbs
21Copper7440-50-8150 lbs5 lbs161 lbs
22Manganese7439-96-5150 lbs5 lbs155 lbs
23Nitric acid7697-37-281 lbs0 lbs81 lbs
24DiisocyanatesN1207 lbs0 lbs7 lbs
25Lead7439-92-11 lbs0 lbs2 lbs
26Lead And Lead CompoundsN4200 lbs1 lbs1 lbs
27Cumene98-82-81 lbs0 lbs1 lbs

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