Home > Analysis: 4502 Noble Sage Ct, Houston, TX 77059 01/31/2025

📊 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

4502 NOBLE SAGE CT HOUSTON 77059

Building Size

5,345 sqft

Total structure area from HCAD building records.

Elevation

20.82 ft

Height above sea level from USGS data.

FEMA Flood Zone

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)

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: 10.82 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

High

Higher pollution than 76% 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)

555 thousand lbs

Very High

85.1x more than typical Houston property
≈ 28 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)

555 thousand lbs

Extremely High

115.2x 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)

0 lbs

None

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
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs
This Property (2014-2024)	555,444 lbs	555,444 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs
This Property (2024 Only)	112,873 lbs	28,806 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 76% 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):

n-Hexane, N,N-Dimethylformamide, Butyl acrylate, Styrene, 1,3-Butadiene

View the full list of 23 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (23 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Total (lbs, 10yr)
1	n-Hexane	110-54-3	136,945	136,945
2	N,N-Dimethylformamide	68-12-2	86,451	86,451
3	Butyl acrylate	141-32-2	72,623	72,623
4	Styrene	100-42-5	69,830	69,830
5	1,3-Butadiene	106-99-0	59,009	59,009
6	Methyl methacrylate	80-62-6	57,260	57,260
7	Chlorine	7782-50-5	15,132	15,132
8	tert-Butyl alcohol	75-65-0	15,105	15,105
9	Methanol	67-56-1	14,602	14,602
10	Certain glycol ethers	N230	8,009	8,009
11	n-Butyl alcohol	71-36-3	7,341	7,341
12	Cumene	98-82-8	4,983	4,983
13	Propylene oxide	75-56-9	2,474	2,474
14	Ethylene oxide	75-21-8	1,369	1,369
15	Allyl chloride	107-05-1	1,277	1,277
16	Nonylphenol	N530	1,013	1,013
17	Nonylphenol Ethoxylates	N535	1,008	1,008
18	Acrylonitrile	107-13-1	775	775
19	Bifenthrin	82657-04-3	149	149
20	Ethyl acrylate	140-88-5	49	49
21	Cumene hydroperoxide	80-15-9	24	24
22	Oxyfluorfen	42874-03-3	10	10
23	4,4'-Diaminodiphenyl ether	101-80-4	6	6

Top chemicals released near this property (2024 only):

Nonylphenol Ethoxylates, N,N-Dimethylformamide, Methyl methacrylate, n-Hexane, Butyl acrylate

View the full list of 17 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (17 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Total (lbs/yr)
1	Nonylphenol Ethoxylates	N535	131	81,533
2	N,N-Dimethylformamide	68-12-2	7,763	8,980
3	Methyl methacrylate	80-62-6	6,109	6,277
4	n-Hexane	110-54-3	3,871	4,482
5	Butyl acrylate	141-32-2	3,592	3,681
6	Methanol	67-56-1	1,403	1,403
7	Styrene	100-42-5	1,292	1,321
8	Chlorine	7782-50-5	1,293	1,293
9	1,3-Butadiene	106-99-0	1,172	1,172
10	Certain glycol ethers	N230	961	1,125
11	tert-Butyl alcohol	75-65-0	771	771
12	Propylene oxide	75-56-9	69	233
13	Nonylphenol	N530	1	224
14	Cumene	98-82-8	206	206
15	Allyl chloride	107-05-1	165	165
16	Ethylene oxide	75-21-8	7	7
17	4,4'-Diaminodiphenyl ether	101-80-4	0	1