Home > Analysis: 2011 Greenbriar Colony Dr, Houston, TX 77032 11/13/2024

📊 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

2011 GREENBRIAR COLONY DR HOUSTON 77032

Building Size

2,574 sqft

Total structure area from HCAD building records.

Elevation

71.92 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: 61.92 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

High

Higher pollution than 82% 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)

1.31 million lbs

Extremely High

201.4x more than typical Houston property
≈ 66 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)

1.31 million lbs

Extremely High

272.4x 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)

365 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)	1,313,921 lbs	1,313,454 lbs	365 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	269,217 lbs	96,968 lbs	9 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%

Higher pollution than 82% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile (top 15% most polluted).

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

Styrene, Xylene (mixed isomers), Methyl methacrylate, Certain glycol ethers, Toluene

View the full list of 21 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (21 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Styrene	100-42-5	1,174,327	0	1,174,327
2	Xylene (mixed isomers)	1330-20-7	96,680	20	96,700
3	Methyl methacrylate	80-62-6	10,630	0	10,630
4	Certain glycol ethers	N230	8,774	0	8,774
5	Toluene	108-88-3	5,975	28	6,003
6	Nickel	7440-02-0	2,960	12	3,002
7	n-Hexane	110-54-3	2,967	8	2,975
8	Ethylene glycol	107-21-1	1,609	250	1,859
9	Ethylbenzene	100-41-4	1,716	5	1,721
10	Phenol	108-95-2	1,654	0	1,654
11	Chromium	7440-47-3	1,517	10	1,563
12	Benzene	71-43-2	1,010	1	1,011
13	1,2,4-Trimethylbenzene	95-63-6	1,002	7	1,009
14	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	964	0	964
15	Dichloromethane	75-09-2	743	0	743
16	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	398	0	398
17	Manganese	7439-96-5	365	0	395
18	Naphthalene	91-20-3	107	0	107
19	Copper	7440-50-8	54	0	60
20	Lead compounds	N420	0	25	25
21	Lead	7439-92-1	2	0	2

Top chemicals released near this property (2024 only):

Styrene, Methyl methacrylate, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Toluene, Nickel

View the full list of 11 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (11 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Styrene	100-42-5	94,902	0	206,378
2	Methyl methacrylate	80-62-6	1,631	0	61,963
3	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	168	0	541
4	Toluene	108-88-3	92	0	92
5	Nickel	7440-02-0	20	6	60
6	Ethylene glycol	107-21-1	59	0	59
7	Xylene (mixed isomers)	1330-20-7	52	0	52
8	Chromium	7440-47-3	22	3	34
9	Manganese	7439-96-5	13	0	23
10	Copper	7440-50-8	2	0	9
11	Certain glycol ethers	N230	6	0	6