Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 811 Mossey Dr, La Porte, TX 77571

HCAD #0800240000360
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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
811 Mossey Dr, La Porte, TX 77571
Elevation
26.15 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very Low
Risk based on FEMA zone and simulation.
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 Low
Flood Depth
0 ft±0.5 ft
No flooding at current water level.
Water Surface Elevation (WSE)
N/A
Water surface elevation data not available.
Area Inundated
177.5 acres
60.2% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$0
Vacant lot (no building data).
Depth-Damage (Neighborhood)
$0
Vacant lot (no building data).
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 Safe
Safety Margin: 0 feet
Severity
Safe
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
8.5th percentile
Property Pollution Ranking
Very High
Higher pollution than 92% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
11.17 millionlbs
Extremely High
1712.4x more than typical Houston property
≈ 559 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
8.71 millionlbs
Extremely High
1805.3x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
2.47 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
26
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)11,172,200 lbs8,705,913 lbs2,466,287 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,274,689 lbs630,606 lbs176,905 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 92% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).
📋
Top chemicals released near this property (past 10 years):
Methanol, Vinyl acetate, Ethylene, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene
View the full list of 60 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(60 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-11,911,824 lbs653,582 lbs10,230,331 lbs
2Vinyl acetate108-05-41,447,723 lbs5,684 lbs4,152,949 lbs
3Ethylene74-85-12,712,347 lbs0 lbs2,712,347 lbs
4Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,746,382 lbs1,746,382 lbs
5Propylene115-07-11,107,583 lbs0 lbs1,107,583 lbs
6Acetaldehyde75-07-0219,660 lbs0 lbs554,695 lbs
7n-Hexane110-54-3511,036 lbs0 lbs511,036 lbs
8Hydroquinone123-31-90 lbs0 lbs430,145 lbs
9Ammonia7664-41-7239,837 lbs12,191 lbs252,028 lbs
10Formaldehyde50-00-063,808 lbs0 lbs63,808 lbs
11Certain glycol ethersN23063,696 lbs0 lbs63,696 lbs
12Xylene (mixed isomers)1330-20-743,900 lbs0 lbs58,245 lbs
13Toluene108-88-354,250 lbs33 lbs54,282 lbs
141,3-Butadiene106-99-050,362 lbs0 lbs50,362 lbs
15n-Butyl alcohol71-36-348,129 lbs0 lbs48,129 lbs
16Methyl iodide74-88-437,993 lbs0 lbs37,993 lbs
17Chlorine7782-50-534,156 lbs3,421 lbs37,577 lbs
18Copper compoundsN1001 lbs84 lbs29,084 lbs
19Sodium nitrite7632-00-00 lbs26,012 lbs26,012 lbs
20Zinc compoundsN9826,213 lbs18,100 lbs24,313 lbs
21Benzene71-43-219,821 lbs42 lbs19,863 lbs
22Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
23Chlorobenzene108-90-716,036 lbs0 lbs16,036 lbs
24Cyclohexane110-82-714,194 lbs0 lbs14,194 lbs
25Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
26Chloroethane75-00-313,375 lbs0 lbs13,375 lbs
27N,N-Dimethylformamide68-12-29,020 lbs0 lbs9,020 lbs
28Dimethylamine124-40-37,035 lbs0 lbs7,035 lbs
29Isoprene78-79-55,909 lbs0 lbs5,909 lbs
30Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
31Methyl methacrylate80-62-65,482 lbs0 lbs5,482 lbs
32Dichloromethane75-09-25,437 lbs0 lbs5,437 lbs
33Acetonitrile75-05-85,326 lbs0 lbs5,326 lbs
34DiisocyanatesN1204,276 lbs0 lbs4,276 lbs
35Mercury7439-97-60 lbs0 lbs2,200 lbs
36Methyl acrylate96-33-32,031 lbs0 lbs2,031 lbs
37Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
38Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
39Styrene100-42-51,209 lbs0 lbs1,209 lbs
40Hydrogen fluoride7664-39-31,062 lbs0 lbs1,062 lbs
41Acrolein107-02-8810 lbs0 lbs810 lbs
42Naphthalene91-20-3493 lbs33 lbs526 lbs
43Aluminum (fume or dust)7429-90-5462 lbs0 lbs462 lbs
44Ethylbenzene100-41-4391 lbs32 lbs423 lbs
45Chloromethane74-87-3326 lbs0 lbs326 lbs
46Dicyclopentadiene77-73-6290 lbs0 lbs290 lbs
47Manganese7439-96-50 lbs282 lbs282 lbs
48Hexazinone51235-04-20 lbs212 lbs212 lbs
49Nickel7440-02-00 lbs152 lbs152 lbs
50Chromium7440-47-345 lbs25 lbs70 lbs
51sec-Butyl alcohol78-92-268 lbs0 lbs68 lbs
52Lead7439-92-10 lbs10 lbs10 lbs
53Nickel compoundsN4954 lbs3 lbs8 lbs
54Polycyclic aromatic compoundsN5907 lbs0 lbs7 lbs
55Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
56Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs
57Mercury compoundsN4582 lbs0 lbs2 lbs
58Benzo[g,h,i]perylene191-24-20 lbs1 lbs1 lbs
59Methyl isocyanate624-83-91 lbs0 lbs1 lbs
60Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Methanol, Ethylene, Vinyl acetate, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene
View the full list of 39 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(39 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-174,731 lbs64,010 lbs515,452 lbs
2Ethylene74-85-1209,820 lbs0 lbs209,820 lbs
3Vinyl acetate108-05-488,722 lbs410 lbs118,205 lbs
4Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs112,100 lbs112,100 lbs
5Propylene115-07-198,454 lbs0 lbs98,454 lbs
6Acetaldehyde75-07-057,110 lbs0 lbs89,685 lbs
7n-Hexane110-54-342,070 lbs0 lbs42,070 lbs
8Ammonia7664-41-729,391 lbs121 lbs29,512 lbs
9Hydroquinone123-31-90 lbs0 lbs28,819 lbs
10Chlorine7782-50-53,660 lbs0 lbs3,660 lbs
11Formaldehyde50-00-03,559 lbs0 lbs3,559 lbs
12Certain glycol ethersN2303,026 lbs0 lbs3,026 lbs
131,3-Butadiene106-99-02,958 lbs0 lbs2,958 lbs
14Toluene108-88-31,859 lbs3 lbs1,862 lbs
15DiisocyanatesN1201,843 lbs0 lbs1,843 lbs
16Benzene71-43-21,725 lbs3 lbs1,728 lbs
17Cyclohexane110-82-71,726 lbs0 lbs1,726 lbs
18Methyl iodide74-88-41,600 lbs0 lbs1,600 lbs
19Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
20Chloroethane75-00-31,429 lbs0 lbs1,429 lbs
21Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
22Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
23Zinc compoundsN982426 lbs233 lbs659 lbs
24Isoprene78-79-5578 lbs0 lbs578 lbs
25N,N-Dimethylformamide68-12-2570 lbs0 lbs570 lbs
26Ethylbenzene100-41-4358 lbs2 lbs360 lbs
27Naphthalene91-20-3270 lbs18 lbs288 lbs
28Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs250 lbs
29Acrolein107-02-8209 lbs0 lbs209 lbs
30Methyl methacrylate80-62-6142 lbs0 lbs142 lbs
31Styrene100-42-5141 lbs0 lbs141 lbs
32Dicyclopentadiene77-73-630 lbs0 lbs30 lbs
33Aluminum (fume or dust)7429-90-526 lbs0 lbs26 lbs
34n-Butyl alcohol71-36-37 lbs0 lbs7 lbs
35Lead7439-92-10 lbs5 lbs5 lbs
36sec-Butyl alcohol78-92-25 lbs0 lbs5 lbs
37Polycyclic aromatic compoundsN5903 lbs0 lbs3 lbs
38Ethylene glycol107-21-11 lbs0 lbs1 lbs
39Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs
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