Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 303 S 15th St, La Porte, TX 77571

HCAD #0241000590035
🧭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
303 S 15th St, La Porte, TX 77571
Building Size
3,594sqft
Total structure area from HCAD building records.
Elevation
17.67 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)
27.51 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
284.9 acres
96.6% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$228,504
Based on HCAD building value of $351,545.
Depth-Damage (Neighborhood)
$194,059
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
14.4th 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)
2.78 millionlbs
Extremely High
426.4x more than typical Houston property
≈ 139 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
2.78 millionlbs
Extremely High
576.8x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
1lbs
Low
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)2,781,634 lbs2,781,634 lbs1 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)265,539 lbs265,539 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):
n-Hexane, Toluene, Ethylene, Methanol, Ammonia
View the full list of 57 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(57 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1n-Hexane110-54-31,028,988 lbs0 lbs1,028,988 lbs
2Toluene108-88-3429,470 lbs0 lbs429,470 lbs
3Ethylene74-85-1427,145 lbs0 lbs427,145 lbs
4Methanol67-56-1265,251 lbs0 lbs265,251 lbs
5Ammonia7664-41-7105,663 lbs0 lbs105,663 lbs
6Acrylonitrile107-13-183,639 lbs0 lbs83,639 lbs
7n-Butyl alcohol71-36-355,640 lbs0 lbs55,640 lbs
8Hydroquinone123-31-942,495 lbs0 lbs42,495 lbs
9Propylene115-07-141,301 lbs0 lbs41,301 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
12Cumene98-82-831,096 lbs0 lbs31,096 lbs
13Xylene (mixed isomers)1330-20-730,648 lbs0 lbs30,648 lbs
14Phenol108-95-230,497 lbs0 lbs30,497 lbs
15Vinyl acetate108-05-422,306 lbs0 lbs22,306 lbs
16Propylene oxide75-56-916,752 lbs0 lbs16,752 lbs
17Styrene100-42-513,938 lbs0 lbs13,938 lbs
18Acetaldehyde75-07-012,256 lbs0 lbs12,256 lbs
19Benzene71-43-210,536 lbs0 lbs10,536 lbs
20Chlorine7782-50-510,430 lbs0 lbs10,430 lbs
21Diphenylamine122-39-45,851 lbs0 lbs5,851 lbs
22Ethylbenzene100-41-45,213 lbs0 lbs5,213 lbs
23Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
24Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
25Chlorobenzene108-90-73,127 lbs0 lbs3,127 lbs
26Methyl methacrylate80-62-63,050 lbs0 lbs3,050 lbs
27Formaldehyde50-00-02,692 lbs0 lbs2,692 lbs
281,2-Butylene oxide106-88-72,348 lbs0 lbs2,348 lbs
29Dimethylamine124-40-32,009 lbs0 lbs2,009 lbs
30Phosgene75-44-51,958 lbs0 lbs1,958 lbs
31Allyl alcohol107-18-61,820 lbs0 lbs1,820 lbs
32Acetonitrile75-05-81,765 lbs0 lbs1,765 lbs
33Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
34Methyl tert-butyl ether1634-04-41,591 lbs0 lbs1,591 lbs
35Triethylamine121-44-81,515 lbs0 lbs1,515 lbs
36Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
37Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
38sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
39Ethylene oxide75-21-81,431 lbs0 lbs1,431 lbs
40tert-Butyl alcohol75-65-01,254 lbs0 lbs1,254 lbs
41Dicyclopentadiene77-73-61,178 lbs0 lbs1,178 lbs
42Maleic anhydride108-31-6965 lbs0 lbs965 lbs
43Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9597 lbs0 lbs597 lbs
44N,N-Dimethylformamide68-12-2535 lbs0 lbs535 lbs
45Manganese7439-96-5511 lbs0 lbs511 lbs
46Hydrazine302-01-2437 lbs0 lbs437 lbs
47Dichloromethane75-09-2251 lbs0 lbs251 lbs
481,2,4-Trimethylbenzene95-63-670 lbs0 lbs70 lbs
49Naphthalene91-20-363 lbs0 lbs63 lbs
50Ethylene glycol107-21-154 lbs0 lbs54 lbs
51Chromium7440-47-345 lbs0 lbs45 lbs
52Cyclohexane110-82-741 lbs0 lbs41 lbs
53Nitric acid7697-37-214 lbs0 lbs14 lbs
54Phthalic anhydride85-44-913 lbs0 lbs13 lbs
55Butyl acrylate141-32-25 lbs0 lbs5 lbs
56Boron trifluoride7637-07-21 lbs0 lbs1 lbs
57Nickel compoundsN4950 lbs1 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
n-Hexane, Ethylene, Toluene, Methanol, Propylene
View the full list of 43 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(43 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1n-Hexane110-54-3116,901 lbs0 lbs116,901 lbs
2Ethylene74-85-172,650 lbs0 lbs72,650 lbs
3Toluene108-88-314,243 lbs0 lbs14,243 lbs
4Methanol67-56-111,998 lbs0 lbs11,998 lbs
5Propylene115-07-110,535 lbs0 lbs10,535 lbs
6Ammonia7664-41-78,690 lbs0 lbs8,690 lbs
7Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
8Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
9Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
10Cumene98-82-82,611 lbs0 lbs2,611 lbs
11Vinyl acetate108-05-42,418 lbs0 lbs2,418 lbs
12Phenol108-95-21,875 lbs0 lbs1,875 lbs
13Benzene71-43-21,090 lbs0 lbs1,090 lbs
14n-Butyl alcohol71-36-31,017 lbs0 lbs1,017 lbs
15Chlorine7782-50-5961 lbs0 lbs961 lbs
16Xylene (mixed isomers)1330-20-7684 lbs0 lbs684 lbs
17Styrene100-42-5530 lbs0 lbs530 lbs
18Acetaldehyde75-07-0494 lbs0 lbs494 lbs
19Chloroacetic acid79-11-8476 lbs0 lbs476 lbs
20Propylene oxide75-56-9430 lbs0 lbs430 lbs
21Ethylene oxide75-21-8420 lbs0 lbs420 lbs
22Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
23Ethylbenzene100-41-4271 lbs0 lbs271 lbs
24Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
25Dimethylamine124-40-3228 lbs0 lbs228 lbs
26Acrylic acid79-10-7186 lbs0 lbs186 lbs
27Maleic anhydride108-31-6178 lbs0 lbs178 lbs
28Formaldehyde50-00-0151 lbs0 lbs151 lbs
29Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
30Diphenylamine122-39-4105 lbs0 lbs105 lbs
31Dicyclopentadiene77-73-697 lbs0 lbs97 lbs
32Allyl alcohol107-18-696 lbs0 lbs96 lbs
33sec-Butyl alcohol78-92-293 lbs0 lbs93 lbs
341,2-Butylene oxide106-88-752 lbs0 lbs52 lbs
35Cyclohexane110-82-741 lbs0 lbs41 lbs
36Hydrazine302-01-239 lbs0 lbs39 lbs
37Phosgene75-44-527 lbs0 lbs27 lbs
38tert-Butyl alcohol75-65-026 lbs0 lbs26 lbs
391,2,4-Trimethylbenzene95-63-625 lbs0 lbs25 lbs
40Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
41Naphthalene91-20-312 lbs0 lbs12 lbs
42Ethylene glycol107-21-13 lbs0 lbs3 lbs
43Nitric acid7697-37-22 lbs0 lbs2 lbs
Loading property data...
🏘️Explore More Properties