Home > Analysis: 1825 Valley View Dr, La Porte, TX 77571 04/30/2025

📊 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

1825 VALLEY VIEW DR LA PORTE 77571

Building Size

1,814 sqft

Total structure area from HCAD building records.

Elevation

20.78 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: 10.78 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

Very High

Higher pollution than 92% 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)

15.94 million lbs

Extremely High

2442.4x more than typical Houston property
≈ 797 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)

3.59 million lbs

Extremely High

744.1x 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)

1.17 million 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)	15,935,058 lbs	3,588,484 lbs	1,171,382 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	2,393,259 lbs	205,692 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 92% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).

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

Methanol, Vinyl acetate, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ethylene, Acetaldehyde

View the full list of 43 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (43 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Methanol	67-56-1	1,719,374	228,964	9,613,263
2	Vinyl acetate	108-05-4	391,623	0	3,091,165
3	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	911,682	911,682
4	Ethylene	74-85-1	792,020	0	792,020
5	Acetaldehyde	75-07-0	193,009	0	528,044
6	Hydroquinone	123-31-9	0	0	430,145
7	Ammonia	7664-41-7	89,901	3,199	93,100
8	Formaldehyde	50-00-0	63,808	0	63,808
9	Certain glycol ethers	N230	62,831	0	62,831
10	Xylene (mixed isomers)	1330-20-7	43,900	0	58,245
11	n-Butyl alcohol	71-36-3	48,101	0	48,101
12	Toluene	108-88-3	45,000	0	45,000
13	Propylene	115-07-1	40,698	0	40,698
14	Copper compounds	N100	1	84	29,084
15	Sodium nitrite	7632-00-0	0	26,012	26,012
16	n-Hexane	110-54-3	20,824	0	20,824
17	Ethylene glycol	107-21-1	16,751	0	16,751
18	Boron trifluoride	7637-07-2	14,190	0	14,190
19	Chlorine	7782-50-5	9,153	605	9,758
20	Dimethylamine	124-40-3	7,035	0	7,035
21	Maleic anhydride	108-31-6	5,569	0	5,569
22	Methyl methacrylate	80-62-6	5,482	0	5,482
23	Dichloromethane	75-09-2	5,437	0	5,437
24	Acetonitrile	75-05-8	5,326	0	5,326
25	Mercury	7439-97-6	0	0	2,200
26	Methyl acrylate	96-33-3	2,031	0	2,031
27	Di(2-ethylhexyl) phthalate	117-81-7	2,020	0	2,020
28	Aluminum oxide (fibrous forms)	1344-28-1	1,750	0	1,750
29	Hydrogen fluoride	7664-39-3	1,062	0	1,062
30	Acrolein	107-02-8	810	0	810
31	Manganese	7439-96-5	0	282	282
32	Naphthalene	91-20-3	245	0	245
33	1,3-Butadiene	106-99-0	217	0	217
34	Ethylbenzene	100-41-4	216	0	216
35	Hexazinone	51235-04-2	0	212	212
36	Zinc compounds	N982	0	155	155
37	Nickel	7440-02-0	0	152	152
38	Chromium	7440-47-3	45	25	70
39	sec-Butyl alcohol	78-92-2	47	0	47
40	Nickel compounds	N495	4	3	8
41	Copper And Copper Compounds	N100	0	6	6
42	Nickel And Nickel Compounds	N495	2	1	3
43	Methyl isocyanate	624-83-9	1	0	1

Top chemicals released near this property (2024 only):

Methanol, Aluminum oxide (fibrous forms), Maleic anhydride, Acetaldehyde, Ethylene

View the full list of 20 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (20 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Total (lbs/yr)
1	Methanol	67-56-1	49,331	1,597,257
2	Aluminum oxide (fibrous forms)	1344-28-1	250	353,010
3	Maleic anhydride	108-31-6	1,569	134,889
4	Acetaldehyde	75-07-0	56,530	89,110
5	Ethylene	74-85-1	75,130	75,130
6	Vinyl acetate	108-05-4	7,022	49,594
7	Ammonia	7664-41-7	5,791	44,183
8	Hydroquinone	123-31-9	0	28,819
9	Acrolein	107-02-8	209	7,515
10	Formaldehyde	50-00-0	3,559	5,799
11	Certain glycol ethers	N230	2,700	2,700
12	Polycyclic aromatic compounds	N590	0	1,652
13	Boron trifluoride	7637-07-2	1,192	1,192
14	Xylene (mixed isomers)	1330-20-7	1,144	1,144
15	Propylene	115-07-1	500	500
16	Naphthalene	91-20-3	245	245
17	Ethylbenzene	100-41-4	216	216
18	Chlorine	7782-50-5	160	160
19	Methyl methacrylate	80-62-6	142	142
20	Ethylene glycol	107-21-1	1	1