Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 9811 Brookside Dr, La Porte, TX 77571

HCAD #1156490020015
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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
9811 Brookside Dr, La Porte, TX 77571
Building Size
2,028sqft
Total structure area from HCAD building records.
Elevation
25.13 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)
34.98 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
251.5 acres
85.3% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$105,361
Based on HCAD building value of $162,094.
Depth-Damage (Neighborhood)
$112,521
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
15.8th 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)
1.91 millionlbs
Extremely High
292.1x more than typical Houston property
≈ 95 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
1.91 millionlbs
Extremely High
395.2x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
407lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
12
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)1,906,064 lbs1,905,657 lbs407 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)165,467 lbs165,444 lbs23 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):
Propylene, n-Hexane, Ethylene, Ammonia, Certain glycol ethers
View the full list of 21 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(21 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Propylene115-07-1891,483 lbs0 lbs891,483 lbs
2n-Hexane110-54-3433,619 lbs0 lbs433,619 lbs
3Ethylene74-85-1287,527 lbs0 lbs287,527 lbs
4Ammonia7664-41-786,761 lbs0 lbs86,761 lbs
5Certain glycol ethersN23063,696 lbs0 lbs63,696 lbs
6Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
7Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
8Chlorobenzene108-90-716,036 lbs0 lbs16,036 lbs
9Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
10Chloroethane75-00-313,375 lbs0 lbs13,375 lbs
11Cyclohexane110-82-712,948 lbs0 lbs12,948 lbs
12Zinc compoundsN9826,213 lbs407 lbs6,620 lbs
13Toluene108-88-35,877 lbs0 lbs5,877 lbs
14Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
15DiisocyanatesN1204,276 lbs0 lbs4,276 lbs
16Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
17Isoprene78-79-5923 lbs0 lbs923 lbs
18Aluminum (fume or dust)7429-90-5462 lbs0 lbs462 lbs
19Chloromethane74-87-3326 lbs0 lbs326 lbs
20Naphthalene91-20-3245 lbs0 lbs245 lbs
21Ethylbenzene100-41-4216 lbs0 lbs216 lbs
📋
Top chemicals released near this property (2024 only):
Propylene, n-Hexane, Ethylene, Ammonia, Certain glycol ethers
View the full list of 17 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(17 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Propylene115-07-183,354 lbs0 lbs83,354 lbs
2n-Hexane110-54-331,953 lbs0 lbs31,953 lbs
3Ethylene74-85-130,290 lbs0 lbs30,290 lbs
4Ammonia7664-41-75,791 lbs0 lbs5,791 lbs
5Certain glycol ethersN2303,026 lbs0 lbs3,026 lbs
6DiisocyanatesN1201,843 lbs0 lbs1,843 lbs
7Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
8Cyclohexane110-82-71,566 lbs0 lbs1,566 lbs
9Chloroethane75-00-31,429 lbs0 lbs1,429 lbs
10Toluene108-88-31,372 lbs0 lbs1,372 lbs
11Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
12Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
13Zinc compoundsN982426 lbs23 lbs449 lbs
14Naphthalene91-20-3245 lbs0 lbs245 lbs
15Ethylbenzene100-41-4216 lbs0 lbs216 lbs
16Aluminum (fume or dust)7429-90-526 lbs0 lbs26 lbs
17Ethylene glycol107-21-11 lbs0 lbs1 lbs
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