Home > Analysis: 8655 Sonneville Dr, Houston, TX 77080 12/17/2024

📊 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

8655 SONNEVILLE DR HOUSTON 77080

Building Size

1,404 sqft

Total structure area from HCAD building records.

Elevation

75.52 ft

Height above sea level from USGS data.

FEMA Flood Zone

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)

Property not flooded at current water level. No damage to calculate.

Depth-Damage Estimate (Neighborhood Comparison)

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: 65.52 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

Low

Lower pollution than 50% 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)

6 thousand lbs

Typical

1.1x less than typical Houston property

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)

5 thousand lbs

Typical

1.1x 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)

408 lbs

High

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.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	5,838 lbs	5,430 lbs	408 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	28,943 lbs	357 lbs	12 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

70-79th

5.8%

80-89th

4.3%

90-100thLowest Pollution

34.2%

Lower pollution than 50% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 50-59th percentile (average pollution).

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

Zinc compounds, Ammonia, Propylene, Certain glycol ethers, Ethylene glycol

View the full list of 14 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (14 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Zinc compounds	N982	1,738	405	2,143
2	Ammonia	7664-41-7	1,500	0	1,500
3	Propylene	115-07-1	975	0	975
4	Certain glycol ethers	N230	565	0	565
5	Ethylene glycol	107-21-1	290	0	290
6	Chromium	7440-47-3	134	0	134
7	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	120	0	120
8	Hydrogen fluoride	7664-39-3	50	0	50
9	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	30	0	30
10	Lead compounds	N420	10	3	13
11	Manganese	7439-96-5	12	0	12
12	Nickel	7440-02-0	3	0	3
13	Cobalt	7440-48-4	2	0	2
14	Lead And Lead Compounds	N420	1	0	1

Top chemicals released near this property (2024 only):

Zinc compounds, Lead compounds, Ammonia, Nickel, Chromium

View the full list of 6 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (6 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Zinc compounds	N982	99	12	28,381
2	Lead compounds	N420	1	0	305
3	Ammonia	7664-41-7	250	0	250
4	Nickel	7440-02-0	3	0	3
5	Chromium	7440-47-3	2	0	2
6	Cobalt	7440-48-4	2	0	2