Home > Analysis: 5542 Shamrock St, Houston, TX 77017 02/28/2025

📊 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

5542 SHAMROCK ST HOUSTON 77017

Building Size

1,442 sqft

Total structure area from HCAD building records.

Elevation

27.62 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: 17.62 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 90% 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)

7.52 million lbs

Extremely High

1152.4x more than typical Houston property
≈ 376 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)

7.41 million lbs

Extremely High

1535.9x 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)

111 thousand lbs

Extremely 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)	7,518,433 lbs	7,406,853 lbs	111,160 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	670,779 lbs	544,631 lbs	15,481 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 90% 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, Ammonia, Propylene, Hydrogen cyanide, 1,3-Butadiene

View the full list of 35 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (35 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Styrene	100-42-5	1,724,969	7,271	1,732,240
2	Ammonia	7664-41-7	1,395,305	29,897	1,425,202
3	Propylene	115-07-1	951,117	0	951,117
4	Hydrogen cyanide	74-90-8	818,552	0	818,552
5	1,3-Butadiene	106-99-0	452,684	1	452,685
6	n-Hexane	110-54-3	395,710	0	395,717
7	Ethylene	74-85-1	294,940	0	294,940
8	Methyl tert-butyl ether	1634-04-4	267,534	0	267,534
9	Xylene (mixed isomers)	1330-20-7	231,926	627	232,583
10	Hydrogen sulfide	7783-06-4	206,443	0	206,443
11	Benzene	71-43-2	205,652	457	206,120
12	Toluene	108-88-3	169,716	244	169,984
13	Diethanolamine	111-42-2	101,560	0	101,560
14	Methanol	67-56-1	58,935	39,325	98,261
15	Cyclohexane	110-82-7	52,501	0	52,510
16	Ethylbenzene	100-41-4	28,148	63	28,219
17	N,N-Dimethylformamide	68-12-2	22,161	88	22,249
18	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	21,954	21,954
19	tert-Butyl alcohol	75-65-0	15,263	0	15,263
20	Sodium nitrite	7632-00-0	0	9,470	9,470
21	Naphthalene	91-20-3	4,762	75	4,845
22	Polycyclic aromatic compounds	N590	2,949	526	3,753
23	1,2,4-Trimethylbenzene	95-63-6	3,713	0	3,727
24	Cumene	98-82-8	1,656	0	1,658
25	Phenol	108-95-2	0	1,155	1,155
26	Biphenyl	92-52-4	345	0	364
27	Chlorine	7782-50-5	120	0	120
28	Mercury	7439-97-6	77	0	77
29	Isoprene	78-79-5	60	0	60
30	Boron trifluoride	7637-07-2	36	0	36
31	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	11	0	11
32	Ethylene glycol	107-21-1	0	0	9
33	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	8	0	8
34	Benzo[g,h,i]perylene	191-24-2	0	7	7
35	Lead compounds	N420	1	0	1

Top chemicals released near this property (2024 only):

Styrene, Ammonia, Diethanolamine, Hydrogen cyanide, n-Hexane

View the full list of 36 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (36 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Styrene	100-42-5	130,785	291	131,077
2	Ammonia	7664-41-7	103,533	78	111,884
3	Diethanolamine	111-42-2	10,082	0	85,611
4	Hydrogen cyanide	74-90-8	73,728	0	73,728
5	n-Hexane	110-54-3	35,588	0	35,588
6	Propylene	115-07-1	34,316	0	34,316
7	Methyl tert-butyl ether	1634-04-4	18,336	0	31,624
8	1,3-Butadiene	106-99-0	30,971	0	30,971
9	Xylene (mixed isomers)	1330-20-7	26,894	10	26,920
10	Methanol	67-56-1	6,850	14,541	21,992
11	Ethylene	74-85-1	17,089	0	17,089
12	Benzene	71-43-2	15,721	110	16,310
13	Toluene	108-88-3	16,108	4	16,165
14	Hydrogen sulfide	7783-06-4	13,422	0	13,422
15	Ethylene glycol	107-21-1	0	0	7,019
16	Cyclohexane	110-82-7	4,048	0	4,048
17	Phenol	108-95-2	0	8	2,825
18	Ethylbenzene	100-41-4	2,726	1	2,734
19	N,N-Dimethylformamide	68-12-2	1,641	0	1,842
20	Certain glycol ethers	N230	0	0	1,111
21	tert-Butyl alcohol	75-65-0	1,021	0	1,021
22	Nickel And Nickel Compounds	N495	0	0	915
23	Naphthalene	91-20-3	763	7	831
24	Polycyclic aromatic compounds	N590	360	55	427
25	Sodium nitrite	7632-00-0	0	371	371
26	1,2,4-Trimethylbenzene	95-63-6	305	0	308
27	Cumene	98-82-8	293	0	293
28	Lead compounds	N420	0	0	269
29	Biphenyl	92-52-4	33	0	33
30	Lead	7439-92-1	0	0	8
31	Isoprene	78-79-5	8	0	8
32	Mercury	7439-97-6	7	0	7
33	Benzo[g,h,i]perylene	191-24-2	0	5	5
34	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3
35	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	2	0	3
36	Boron trifluoride	7637-07-2	1	0	1