Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 11522 N H St, La Porte, TX 77571

HCAD #0231360000293
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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
11522 N H St, La Porte, TX 77571
Building Size
1,880sqft
Total structure area from HCAD building records.
Elevation
21.04 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)
30.88 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)
$191,075
Based on HCAD building value of $293,963.
Depth-Damage (Neighborhood)
$102,501
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
15.9th 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)
1.87 millionlbs
Extremely High
285.9x more than typical Houston property
≈ 93 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
1.86 millionlbs
Extremely High
386.7x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
264lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
18
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)1,865,178 lbs1,864,913 lbs264 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)123,638 lbs123,638 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):
Methanol, Ethylene, Vinyl acetate, Ammonia, Formaldehyde
View the full list of 46 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(46 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-1847,706 lbs0 lbs847,706 lbs
2Ethylene74-85-1335,632 lbs0 lbs335,632 lbs
3Vinyl acetate108-05-4124,970 lbs0 lbs124,970 lbs
4Ammonia7664-41-7106,624 lbs68 lbs106,692 lbs
5Formaldehyde50-00-063,854 lbs102 lbs63,956 lbs
6Xylene (mixed isomers)1330-20-754,400 lbs0 lbs54,400 lbs
7Propylene115-07-149,954 lbs0 lbs49,954 lbs
8n-Butyl alcohol71-36-349,207 lbs0 lbs49,207 lbs
9Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
10Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
11Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
12Cumene98-82-831,165 lbs0 lbs31,165 lbs
13Copper compoundsN1001 lbs84 lbs29,084 lbs
14Ethylene glycol107-21-116,766 lbs0 lbs16,766 lbs
15Acetaldehyde75-07-012,266 lbs0 lbs12,266 lbs
16Chlorine7782-50-511,230 lbs0 lbs11,230 lbs
17Benzene71-43-210,536 lbs0 lbs10,536 lbs
18Styrene100-42-57,344 lbs0 lbs7,344 lbs
19Maleic anhydride108-31-65,570 lbs0 lbs5,570 lbs
20Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
21Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
22Methyl methacrylate80-62-63,052 lbs0 lbs3,052 lbs
23Ethylene oxide75-21-82,222 lbs0 lbs2,222 lbs
24Mercury7439-97-60 lbs0 lbs2,200 lbs
25Phosgene75-44-51,958 lbs0 lbs1,958 lbs
26Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
27Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
28Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
29sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
30Diphenylamine122-39-4997 lbs0 lbs997 lbs
311,2,4-Trimethylbenzene95-63-6971 lbs0 lbs971 lbs
32Toluene108-88-3807 lbs0 lbs807 lbs
33Manganese7439-96-5511 lbs0 lbs511 lbs
34Propylene oxide75-56-9385 lbs0 lbs385 lbs
35Cyclohexane110-82-7377 lbs0 lbs377 lbs
36Ethylbenzene100-41-4310 lbs0 lbs310 lbs
37Naphthalene91-20-3278 lbs0 lbs278 lbs
38Chloromethane74-87-351 lbs0 lbs51 lbs
39Chromium7440-47-345 lbs0 lbs45 lbs
40N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
41Nickel compoundsN4954 lbs3 lbs8 lbs
42Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
43Butyl acrylate141-32-25 lbs0 lbs5 lbs
44Bis(2-chloroethyl) ether111-44-43 lbs0 lbs3 lbs
45Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs
46Certain glycol ethersN2303 lbs0 lbs3 lbs
📋
Top chemicals released near this property (2024 only):
Methanol, Propylene, Ethylene, Vinyl acetate, Ammonia
View the full list of 34 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(34 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-155,193 lbs0 lbs55,193 lbs
2Propylene115-07-110,535 lbs0 lbs10,535 lbs
3Ethylene74-85-110,189 lbs0 lbs10,189 lbs
4Vinyl acetate108-05-49,298 lbs0 lbs9,298 lbs
5Ammonia7664-41-78,692 lbs0 lbs8,692 lbs
6Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
7Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
8Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
9Formaldehyde50-00-03,562 lbs0 lbs3,562 lbs
10Cumene98-82-82,616 lbs0 lbs2,616 lbs
11Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
12Xylene (mixed isomers)1330-20-71,183 lbs0 lbs1,183 lbs
13Chlorine7782-50-51,121 lbs0 lbs1,121 lbs
14Benzene71-43-21,090 lbs0 lbs1,090 lbs
15Acetaldehyde75-07-0504 lbs0 lbs504 lbs
16Ethylene oxide75-21-8483 lbs0 lbs483 lbs
17Chloroacetic acid79-11-8476 lbs0 lbs476 lbs
18Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
19Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
20Naphthalene91-20-3245 lbs0 lbs245 lbs
21Ethylbenzene100-41-4220 lbs0 lbs220 lbs
22Acrylic acid79-10-7186 lbs0 lbs186 lbs
23Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
24Styrene100-42-5116 lbs0 lbs116 lbs
25Diphenylamine122-39-4103 lbs0 lbs103 lbs
26sec-Butyl alcohol78-92-293 lbs0 lbs93 lbs
27n-Butyl alcohol71-36-375 lbs0 lbs75 lbs
281,2,4-Trimethylbenzene95-63-674 lbs0 lbs74 lbs
29Propylene oxide75-56-961 lbs0 lbs61 lbs
30Phosgene75-44-527 lbs0 lbs27 lbs
31Cyclohexane110-82-724 lbs0 lbs24 lbs
32Toluene108-88-316 lbs0 lbs16 lbs
33Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
34Ethylene glycol107-21-14 lbs0 lbs4 lbs
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