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
11613 CELTIS ST HOUSTON 77029
Building Size
1,484 sqft
Total structure area from HCAD building records.
Elevation
24.1 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: 14.1 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 75% 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)
482 thousand lbs
Very High
73.9x more than typical Houston property
≈ 24 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)
482 thousand lbs
Very High
99.9x 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)
81 lbs
Above Typical
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)482,020 lbs481,939 lbs81 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)56,145 lbs54,948 lbs32 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 75% 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):

1,3-Butadiene, Ethylene, n-Hexane, Cyclohexane, Isoprene

View the full list of 22 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (22 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
11,3-Butadiene106-99-0203,018 lbs0 lbs203,018 lbs
2Ethylene74-85-1165,454 lbs0 lbs165,454 lbs
3n-Hexane110-54-351,532 lbs9 lbs51,612 lbs
4Cyclohexane110-82-714,656 lbs0 lbs14,656 lbs
5Isoprene78-79-513,272 lbs0 lbs13,272 lbs
6Toluene108-88-39,495 lbs17 lbs9,599 lbs
7Xylene (mixed isomers)1330-20-76,740 lbs18 lbs6,829 lbs
8Methanol67-56-15,617 lbs0 lbs5,617 lbs
9Benzene71-43-23,974 lbs9 lbs4,001 lbs
10Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-03,066 lbs0 lbs3,066 lbs
111,2,4-Trimethylbenzene95-63-62,730 lbs0 lbs2,801 lbs
12Ethylbenzene100-41-41,283 lbs16 lbs1,336 lbs
13Nickel7440-02-0376 lbs1 lbs376 lbs
14Lead7439-92-1229 lbs1 lbs230 lbs
15Cumene98-82-8169 lbs0 lbs174 lbs
16Naphthalene91-20-3134 lbs0 lbs139 lbs
17Propylene115-07-1126 lbs0 lbs126 lbs
18Anthracene120-12-731 lbs0 lbs31 lbs
19Polycyclic aromatic compoundsN59023 lbs0 lbs23 lbs
20Mercury7439-97-612 lbs0 lbs12 lbs
21Lead compoundsN4202 lbs5 lbs7 lbs
22Lead And Lead CompoundsN4200 lbs5 lbs5 lbs

Top chemicals released near this property (2024 only):

1,3-Butadiene, Ethylene, n-Hexane, Isoprene, Lead And Lead Compounds

View the full list of 16 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (16 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
11,3-Butadiene106-99-032,375 lbs0 lbs32,375 lbs
2Ethylene74-85-114,466 lbs0 lbs14,466 lbs
3n-Hexane110-54-33,420 lbs0 lbs3,491 lbs
4Isoprene78-79-52,371 lbs0 lbs2,371 lbs
5Lead And Lead CompoundsN4200 lbs5 lbs788 lbs
6Toluene108-88-3520 lbs8 lbs615 lbs
7Benzene71-43-2545 lbs2 lbs568 lbs
8Xylene (mixed isomers)1330-20-7280 lbs8 lbs360 lbs
9Cyclohexane110-82-7294 lbs0 lbs294 lbs
10Lead7439-92-1228 lbs1 lbs234 lbs
111,2,4-Trimethylbenzene95-63-6114 lbs0 lbs185 lbs
12Ethylbenzene100-41-4125 lbs8 lbs170 lbs
13Nickel7440-02-090 lbs0 lbs98 lbs
14Propylene115-07-183 lbs0 lbs83 lbs
15Cumene98-82-825 lbs0 lbs30 lbs
16Naphthalene91-20-311 lbs0 lbs17 lbs

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