Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 6711 Sylvan Rd, Houston, TX 77023

HCAD #0622080140009
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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
6711 Sylvan Rd, Houston, TX 77023
Building Size
1,870sqft
Total structure area from HCAD building records.
Elevation
24.89 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)
34.74 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
163.9 acres
55.6% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$135,964
Based on HCAD building value of $209,176.
Depth-Damage (Neighborhood)
$167,192
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
35.3th percentile
Property Pollution Ranking
Moderate
Higher pollution than 65% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
116 thousandlbs
High
17.8x more than typical Houston property
≈ 6 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
116 thousandlbs
High
24.0x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
175lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
3
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)116,044 lbs115,869 lbs175 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)10,519 lbs10,517 lbs3 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 65% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 30-39th percentile.
📋
Top chemicals released near this property (past 10 years):
Zinc compounds, Xylene (mixed isomers), Toluene, Lead compounds, Copper compounds
View the full list of 12 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(12 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Zinc compoundsN98293,119 lbs0 lbs93,119 lbs
2Xylene (mixed isomers)1330-20-710,496 lbs0 lbs10,496 lbs
3Toluene108-88-37,966 lbs0 lbs7,966 lbs
4Lead compoundsN4201,325 lbs0 lbs1,325 lbs
5Copper compoundsN1001,001 lbs0 lbs1,001 lbs
6Lead And Lead CompoundsN420815 lbs0 lbs815 lbs
7Manganese7439-96-5500 lbs80 lbs580 lbs
8Nitric acid7697-37-2397 lbs0 lbs397 lbs
9Lead7439-92-1144 lbs95 lbs239 lbs
10Chromium compounds (except for chromite ore mined in the Transvaal Region)N09076 lbs0 lbs76 lbs
11Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09019 lbs0 lbs19 lbs
12Nickel compoundsN49510 lbs0 lbs10 lbs
📋
Top chemicals released near this property (2024 only):
Xylene (mixed isomers), Lead, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
View the full list of 3 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(3 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Xylene (mixed isomers)1330-20-710,496 lbs0 lbs10,496 lbs
2Lead7439-92-114 lbs3 lbs17 lbs
3Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs6 lbs
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