Home > Analysis: 412 Winona Dr, Pasadena, TX 77506

📊 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

412 WINONA DR PASADENA 77506

Building Size

1,793 sqft

Total structure area from HCAD building records.

Elevation

20.67 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: 10.67 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 89% 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)

6.05 million lbs

Extremely High

926.7x more than typical Houston property
≈ 302 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)

6.03 million lbs

Extremely High

1250.8x 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)

4 thousand lbs

Very 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)	6,046,121 lbs	6,031,962 lbs	4,122 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	481,845 lbs	353,937 lbs	135 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 89% 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):

n-Hexane, Hydrogen cyanide, Propylene, Xylene (mixed isomers), Ethylene

View the full list of 52 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (52 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	n-Hexane	110-54-3	1,145,849	179	1,146,519
2	Hydrogen cyanide	74-90-8	1,032,286	0	1,032,286
3	Propylene	115-07-1	465,727	0	465,727
4	Xylene (mixed isomers)	1330-20-7	454,237	774	457,451
5	Ethylene	74-85-1	371,526	0	371,526
6	Methanol	67-56-1	335,236	0	335,236
7	Toluene	108-88-3	325,357	235	326,569
8	Benzene	71-43-2	293,985	147	294,717
9	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	250,113	0	250,113
10	1,3-Butadiene	106-99-0	249,010	0	249,010
11	Hydrogen sulfide	7783-06-4	244,215	0	244,216
12	Ammonia	7664-41-7	216,283	0	216,283
13	n-Butyl alcohol	71-36-3	137,606	0	137,606
14	Diethanolamine	111-42-2	102,160	0	102,160
15	Cyclohexane	110-82-7	82,232	0	83,001
16	Vinyl acetate	108-05-4	70,754	0	70,754
17	Ethylbenzene	100-41-4	67,198	81	67,918
18	1,2,4-Trimethylbenzene	95-63-6	35,720	105	36,317
19	Propionaldehyde	123-38-6	31,241	0	31,241
20	Butyraldehyde	123-72-8	22,150	0	22,150
21	Naphthalene	91-20-3	20,519	24	21,879
22	Dicyclopentadiene	77-73-6	14,013	0	14,013
23	Isoprene	78-79-5	13,272	0	13,272
24	Cumene	98-82-8	9,291	10	9,491
25	Dimethylamine	124-40-3	6,912	0	6,912
26	Acetaldehyde	75-07-0	6,116	0	6,116
27	Ethylene glycol	107-21-1	5,553	0	5,562
28	Biphenyl	92-52-4	5,161	0	5,502
29	Isobutyraldehyde	78-84-2	4,080	0	4,080
30	Polycyclic aromatic compounds	N590	2,909	117	3,228
31	Zinc compounds	N982	219	1,181	2,891
32	Formaldehyde	50-00-0	2,284	0	2,284
33	Acrylonitrile	107-13-1	2,224	0	2,224
34	Phenol	108-95-2	815	1,155	1,970
35	Propylene oxide	75-56-9	1,829	0	1,829
36	Formic acid	64-18-6	1,406	0	1,406
37	Styrene	100-42-5	1,198	0	1,198
38	Hydrogen fluoride	7664-39-3	229	0	299
39	Chlorine	7782-50-5	268	0	268
40	Mercury compounds	N458	165	1	166
41	Nickel	7440-02-0	120	0	120
42	Mercury	7439-97-6	106	0	106
43	Mercury And Mercury Compounds	N458	97	0	98
44	Certain glycol ethers	N230	92	0	92
45	Lead compounds	N420	8	73	81
46	Manganese	7439-96-5	70	0	70
47	Chromium	7440-47-3	40	0	40
48	C.I. Food Red 15	81-88-9	40	0	40
49	Lead And Lead Compounds	N420	4	28	33
50	Anthracene	120-12-7	31	0	31
51	Benzo[g,h,i]perylene	191-24-2	3	7	11
52	Methyl tert-butyl ether	1634-04-4	2	5	10

Top chemicals released near this property (2024 only):

Diethanolamine, Hydrogen cyanide, n-Hexane, Xylene (mixed isomers), 1,3-Butadiene

View the full list of 44 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (44 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Diethanolamine	111-42-2	10,092	0	85,621
2	Hydrogen cyanide	74-90-8	73,728	0	73,728
3	n-Hexane	110-54-3	46,025	0	46,129
4	Xylene (mixed isomers)	1330-20-7	38,390	33	38,806
5	1,3-Butadiene	106-99-0	33,331	0	33,331
6	Ammonia	7664-41-7	16,612	0	25,674
7	Toluene	108-88-3	24,474	13	24,645
8	Ethylene	74-85-1	23,862	0	23,862
9	Benzene	71-43-2	20,461	6	20,600
10	Methanol	67-56-1	15,730	0	20,533
11	Zinc compounds	N982	22	32	19,978
12	Hydrogen sulfide	7783-06-4	14,345	0	14,345
13	Propylene	115-07-1	10,627	0	10,627
14	Ethylene glycol	107-21-1	529	0	7,568
15	Vinyl acetate	108-05-4	5,850	0	5,852
16	Cyclohexane	110-82-7	4,697	0	4,715
17	Ethylbenzene	100-41-4	4,534	15	4,625
18	1,2,4-Trimethylbenzene	95-63-6	3,481	0	3,693
19	Phenol	108-95-2	255	8	3,101
20	Isoprene	78-79-5	2,371	0	2,371
21	Formaldehyde	50-00-0	255	0	2,348
22	Formic acid	64-18-6	189	0	1,968
23	Naphthalene	91-20-3	1,414	1	1,500
24	Lead And Lead Compounds	N420	1	6	1,193
25	Certain glycol ethers	N230	11	0	1,122
26	Nickel And Nickel Compounds	N495	0	0	915
27	Dimethylamine	124-40-3	864	0	884
28	Cumene	98-82-8	580	0	586
29	Polycyclic aromatic compounds	N590	353	15	369
30	Acrylonitrile	107-13-1	278	0	294
31	Lead compounds	N420	0	0	269
32	Propylene oxide	75-56-9	255	0	255
33	Styrene	100-42-5	110	0	110
34	Acetaldehyde	75-07-0	45	0	45
35	Biphenyl	92-52-4	33	0	33
36	Manganese	7439-96-5	30	0	30
37	Chlorine	7782-50-5	25	0	25
38	Chromium	7440-47-3	25	0	25
39	Nickel	7440-02-0	24	0	24
40	Mercury And Mercury Compounds	N458	21	0	23
41	Lead	7439-92-1	0	0	8
42	Mercury	7439-97-6	7	0	7
43	Benzo[g,h,i]perylene	191-24-2	0	5	5
44	Vanadium (except when contained in an alloy)	7440-62-2	0	0	3