Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 11211 N H St, La Porte, TX 77571

HCAD #0231410000469
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🌍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
11211 N H St, La Porte, TX 77571
Building Size
1,252sqft
Total structure area from HCAD building records.
Elevation
22.03 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)
31.88 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
294.9 acres
100.0% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$49,977
Based on HCAD building value of $76,889.
Depth-Damage (Neighborhood)
$65,820
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
27.9th percentile
Property Pollution Ranking
Moderate
Higher pollution than 72% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
302 thousandlbs
High
46.3x more than typical Houston property
≈ 15 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
302 thousandlbs
Very High
62.5x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
170lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
13
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)301,801 lbs301,631 lbs170 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)25,369 lbs25,369 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 72% 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 chemicals released near this property (past 10 years):
Certain glycol ethers, Xylene (mixed isomers), Methanol, Formaldehyde, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
View the full list of 33 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(33 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Certain glycol ethersN23062,834 lbs0 lbs62,834 lbs
2Xylene (mixed isomers)1330-20-744,018 lbs0 lbs44,018 lbs
3Methanol67-56-141,849 lbs0 lbs41,849 lbs
4Formaldehyde50-00-036,691 lbs102 lbs36,794 lbs
5Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
6Ammonia7664-41-718,956 lbs68 lbs19,024 lbs
7Ethylene glycol107-21-116,752 lbs0 lbs16,752 lbs
8Chlorine7782-50-511,230 lbs0 lbs11,230 lbs
9Ethylene74-85-17,000 lbs0 lbs7,000 lbs
10Maleic anhydride108-31-65,570 lbs0 lbs5,570 lbs
11Propylene115-07-14,500 lbs0 lbs4,500 lbs
12Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
13Mercury7439-97-60 lbs0 lbs2,200 lbs
14Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
15Phosgene75-44-51,958 lbs0 lbs1,958 lbs
16Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
17Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
18Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
19sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
20n-Butyl alcohol71-36-31,165 lbs0 lbs1,165 lbs
211,2,4-Trimethylbenzene95-63-6971 lbs0 lbs971 lbs
22Toluene108-88-3807 lbs0 lbs807 lbs
23Ethylene oxide75-21-8791 lbs0 lbs791 lbs
24Cyclohexane110-82-7377 lbs0 lbs377 lbs
25Ethylbenzene100-41-4310 lbs0 lbs310 lbs
26Naphthalene91-20-3278 lbs0 lbs278 lbs
27Cumene98-82-868 lbs0 lbs68 lbs
28Chloromethane74-87-351 lbs0 lbs51 lbs
29Chromium7440-47-345 lbs0 lbs45 lbs
30N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
31Propylene oxide75-56-914 lbs0 lbs14 lbs
32Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
33Methyl methacrylate80-62-62 lbs0 lbs2 lbs
📋
Top chemicals released near this property (2024 only):
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Methanol, Formaldehyde, Certain glycol ethers, Maleic anhydride
View the full list of 26 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(26 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
2Methanol67-56-15,229 lbs0 lbs5,229 lbs
3Formaldehyde50-00-03,562 lbs0 lbs3,562 lbs
4Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
5Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
6Xylene (mixed isomers)1330-20-71,183 lbs0 lbs1,183 lbs
7Chlorine7782-50-51,121 lbs0 lbs1,121 lbs
8Ammonia7664-41-7897 lbs0 lbs897 lbs
9Ethylene74-85-1650 lbs0 lbs650 lbs
10Propylene115-07-1500 lbs0 lbs500 lbs
11Chloroacetic acid79-11-8476 lbs0 lbs476 lbs
12Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
13Naphthalene91-20-3245 lbs0 lbs245 lbs
14Ethylbenzene100-41-4220 lbs0 lbs220 lbs
15Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
16sec-Butyl alcohol78-92-293 lbs0 lbs93 lbs
17n-Butyl alcohol71-36-375 lbs0 lbs75 lbs
181,2,4-Trimethylbenzene95-63-674 lbs0 lbs74 lbs
19Ethylene oxide75-21-863 lbs0 lbs63 lbs
20Phosgene75-44-527 lbs0 lbs27 lbs
21Cyclohexane110-82-724 lbs0 lbs24 lbs
22Toluene108-88-316 lbs0 lbs16 lbs
23Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
24Cumene98-82-84 lbs0 lbs4 lbs
25Propylene oxide75-56-91 lbs0 lbs1 lbs
26Ethylene glycol107-21-11 lbs0 lbs1 lbs
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