Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1978 Coupland Dr, La Porte, TX 77571

HCAD #1116480000001
🧭Jump to Section
🌍Environmental Assessment

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.

🌊Flood Risk Analysis
FEMA Zone X
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
1978 Coupland Dr, La Porte, TX 77571
Building Size
1,736sqft
Total structure area from HCAD building records.
Elevation
23.98 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very High
Property flooded at 9.84ft depth.
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 High
Flood Depth
9.84 ft±0.5 ft
Depth of water above ground level.
Water Surface Elevation (WSE)
33.83 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
266.2 acres
90.3% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$87,230
Based on HCAD building value of $134,200.
Depth-Damage (Neighborhood)
$70,558
Based on neighborhood replacement cost.
Analysis Method
COG Combined 5000 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 Flooded
Flood Depth: 9.84 feet
Severity
Severe
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.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
16.3th percentile
Property Pollution Ranking
High
Higher pollution than 84% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
1.72 millionlbs
Extremely High
264.4x more than typical Houston property
≈ 86 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
1.72 millionlbs
Extremely High
357.7x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
0lbs
None
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
10
Industrial facilities within 2 miles
💡
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.

PeriodTotalAirWater
Typical Houston Property (2014-2024)6,524 lbs4,822 lbs0 lbs
This Property (2014-2024)1,724,911 lbs1,724,911 lbs0 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)146,077 lbs146,077 lbs0 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
6%
70-79th
5.8%
80-89th
4.3%
90-100thLowest Pollution
34.2%
Higher pollution than 84% 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 chemicals released near this property (past 10 years):
Propylene, n-Hexane, Ethylene, Ammonia, Certain glycol ethers
View the full list of 16 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(16 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Propylene115-07-1891,483 lbs0 lbs891,483 lbs
2n-Hexane110-54-3332,892 lbs0 lbs332,892 lbs
3Ethylene74-85-1262,325 lbs0 lbs262,325 lbs
4Ammonia7664-41-786,761 lbs0 lbs86,761 lbs
5Certain glycol ethersN23062,831 lbs0 lbs62,831 lbs
6Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
7Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
8Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
9Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
10Zinc compoundsN9824,689 lbs0 lbs4,689 lbs
11Mercury7439-97-60 lbs0 lbs2,200 lbs
12Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
13Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
14Naphthalene91-20-3245 lbs0 lbs245 lbs
15Ethylbenzene100-41-4216 lbs0 lbs216 lbs
16Chromium7440-47-345 lbs0 lbs45 lbs
📋
Top chemicals released near this property (2024 only):
Propylene, Ethylene, n-Hexane, Ammonia, Certain glycol ethers
View the full list of 13 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(13 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Propylene115-07-183,354 lbs0 lbs83,354 lbs
2Ethylene74-85-126,855 lbs0 lbs26,855 lbs
3n-Hexane110-54-322,335 lbs0 lbs22,335 lbs
4Ammonia7664-41-75,791 lbs0 lbs5,791 lbs
5Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
6Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
7Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
8Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
9Zinc compoundsN982425 lbs0 lbs425 lbs
10Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
11Naphthalene91-20-3245 lbs0 lbs245 lbs
12Ethylbenzene100-41-4216 lbs0 lbs216 lbs
13Ethylene glycol107-21-11 lbs0 lbs1 lbs
Loading property data...
🏘️Explore More Properties