Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 11702 N H St, La Porte, TX 77571

HCAD #0231360000371
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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
11702 N H St, La Porte, TX 77571
Building Size
4,044sqft
Total structure area from HCAD building records.
Elevation
19.86 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)
29.70 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)
$84,427
Based on HCAD building value of $129,888.
Depth-Damage (Neighborhood)
$248,507
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
14.1th percentile
Property Pollution Ranking
High
Higher pollution than 86% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
3.04 millionlbs
Extremely High
466.4x more than typical Houston property
≈ 152 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
2.1 millionlbs
Extremely High
435.7x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
942 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
19
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)3,042,643 lbs2,100,985 lbs941,658 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)124,019 lbs124,019 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 86% 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, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ethylene, Vinyl acetate, Ammonia
View the full list of 52 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(52 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-1958,818 lbs0 lbs1,217,818 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs911,682 lbs911,682 lbs
3Ethylene74-85-1362,526 lbs0 lbs362,526 lbs
4Vinyl acetate108-05-4141,735 lbs0 lbs279,345 lbs
5Ammonia7664-41-7105,663 lbs3,199 lbs108,862 lbs
6Xylene (mixed isomers)1330-20-754,281 lbs0 lbs68,626 lbs
7Formaldehyde50-00-063,808 lbs0 lbs63,808 lbs
8Hydroquinone123-31-942,495 lbs0 lbs57,435 lbs
9Propylene115-07-149,954 lbs0 lbs49,954 lbs
10n-Butyl alcohol71-36-349,206 lbs0 lbs49,206 lbs
11Toluene108-88-345,000 lbs0 lbs45,000 lbs
12Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
13Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
14Cumene98-82-831,096 lbs0 lbs31,096 lbs
15Copper compoundsN1001 lbs84 lbs29,084 lbs
16Sodium nitrite7632-00-00 lbs26,012 lbs26,012 lbs
17Acetaldehyde75-07-016,053 lbs0 lbs22,283 lbs
18n-Hexane110-54-316,824 lbs0 lbs16,824 lbs
19Ethylene glycol107-21-116,765 lbs0 lbs16,765 lbs
20Chlorine7782-50-511,961 lbs0 lbs11,961 lbs
21Benzene71-43-210,536 lbs0 lbs10,536 lbs
22Styrene100-42-57,344 lbs0 lbs7,344 lbs
23Dimethylamine124-40-37,035 lbs0 lbs7,035 lbs
24Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
25Dichloromethane75-09-25,437 lbs0 lbs5,437 lbs
26Acetonitrile75-05-85,326 lbs0 lbs5,326 lbs
27Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
28Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
29Methyl methacrylate80-62-63,435 lbs0 lbs3,435 lbs
30Mercury7439-97-60 lbs0 lbs2,200 lbs
31Phosgene75-44-51,958 lbs0 lbs1,958 lbs
32Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
33Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
34Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
35sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
36Ethylene oxide75-21-81,431 lbs0 lbs1,431 lbs
37Hydrogen fluoride7664-39-31,062 lbs0 lbs1,062 lbs
38Diphenylamine122-39-4997 lbs0 lbs997 lbs
39Manganese7439-96-5511 lbs282 lbs793 lbs
40Propylene oxide75-56-9371 lbs0 lbs371 lbs
41Naphthalene91-20-3245 lbs0 lbs245 lbs
42Ethylbenzene100-41-4216 lbs0 lbs216 lbs
43Hexazinone51235-04-20 lbs212 lbs212 lbs
44Nickel7440-02-00 lbs152 lbs152 lbs
45Chromium7440-47-345 lbs25 lbs70 lbs
46Methyl acrylate96-33-355 lbs0 lbs55 lbs
47N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
48Nickel compoundsN4954 lbs3 lbs8 lbs
49Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
50Butyl acrylate141-32-25 lbs0 lbs5 lbs
51Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs
52Methyl isocyanate624-83-91 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Methanol, Propylene, Ethylene, Vinyl acetate, Ammonia
View the full list of 31 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(31 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-155,804 lbs0 lbs55,804 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
5Ammonia7664-41-78,690 lbs0 lbs8,690 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
9Formaldehyde50-00-03,559 lbs0 lbs3,559 lbs
10Cumene98-82-82,611 lbs0 lbs2,611 lbs
11Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
12Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
13Chlorine7782-50-51,121 lbs0 lbs1,121 lbs
14Benzene71-43-21,090 lbs0 lbs1,090 lbs
15Acetaldehyde75-07-0504 lbs0 lbs504 lbs
16Chloroacetic acid79-11-8476 lbs0 lbs476 lbs
17Ethylene oxide75-21-8420 lbs0 lbs420 lbs
18Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
19Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
20Naphthalene91-20-3245 lbs0 lbs245 lbs
21Ethylbenzene100-41-4216 lbs0 lbs216 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
28Propylene oxide75-56-960 lbs0 lbs60 lbs
29Phosgene75-44-527 lbs0 lbs27 lbs
30Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
31Ethylene glycol107-21-14 lbs0 lbs4 lbs
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