📊 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

11217 TELEPHONE RD HOUSTON 77075

Elevation

43.03 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)

Vacant lot (no building data). No structure to calculate damage for.

Depth-Damage Estimate (Neighborhood Comparison)

Vacant lot (no building data). No structure to calculate damage for.

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: 33.03 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 54% 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)

16 thousand lbs

Above Typical

2.4x more than typical Houston property
≈ 1 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)

16 thousand lbs

Above Typical

3.3x 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)

26 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.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	15,895 lbs	15,869 lbs	26 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	172,425 lbs	2,792 lbs	0 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 54% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 40-49th percentile (slightly higher than average).

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

Formic acid, Certain glycol ethers, n-Hexane, Xylene (mixed isomers), Manganese

View the full list of 20 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (20 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Formic acid	64-18-6	6,944 lbs	0 lbs	6,944 lbs
2	Certain glycol ethers	N230	4,757 lbs	0 lbs	4,757 lbs
3	n-Hexane	110-54-3	1,308 lbs	0 lbs	1,308 lbs
4	Xylene (mixed isomers)	1330-20-7	750 lbs	0 lbs	750 lbs
5	Manganese	7439-96-5	526 lbs	12 lbs	538 lbs
6	Toluene	108-88-3	500 lbs	0 lbs	500 lbs
7	Methanol	67-56-1	452 lbs	0 lbs	452 lbs
8	Diethanolamine	111-42-2	313 lbs	0 lbs	313 lbs
9	Ethylene glycol	107-21-1	80 lbs	0 lbs	80 lbs
10	Chlorobenzene	108-90-7	73 lbs	0 lbs	73 lbs
11	Nickel	7440-02-0	69 lbs	3 lbs	72 lbs
12	Chromium	7440-47-3	64 lbs	8 lbs	72 lbs
13	Diisocyanates	N120	12 lbs	0 lbs	12 lbs
14	Formaldehyde	50-00-0	9 lbs	0 lbs	9 lbs
15	Toluene diisocyanate (mixed isomers)	26471-62-5	5 lbs	0 lbs	5 lbs
16	Toluene-2,4-diisocyanate	584-84-9	3 lbs	0 lbs	3 lbs
17	Polycyclic aromatic compounds	N590	2 lbs	0 lbs	2 lbs
18	Lead	7439-92-1	0 lbs	2 lbs	2 lbs
19	Toluene-2,6-diisocyanate	91-08-7	1 lbs	0 lbs	1 lbs
20	Copper	7440-50-8	0 lbs	1 lbs	1 lbs

Top chemicals released near this property (2024 only):

Chromium, Certain glycol ethers, Nickel, Mixture, Diisocyanates

View the full list of 12 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (12 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Total (lbs/yr)
1	Chromium	7440-47-3	14 lbs	53,640 lbs
2	Certain glycol ethers	N230	684 lbs	39,433 lbs
3	Nickel	7440-02-0	12 lbs	27,771 lbs
4	Mixture	MIXTURE	0 lbs	18,450 lbs
5	Diisocyanates	N120	4 lbs	17,784 lbs
6	Manganese	7439-96-5	263 lbs	4,995 lbs
7	Formic acid	64-18-6	1,064 lbs	3,995 lbs
8	Ethylene glycol	107-21-1	1 lbs	3,554 lbs
9	Diethanolamine	111-42-2	0 lbs	2,053 lbs
10	n-Hexane	110-54-3	250 lbs	250 lbs
11	Toluene	108-88-3	250 lbs	250 lbs
12	Xylene (mixed isomers)	1330-20-7	250 lbs	250 lbs