Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 918 Tangle Briar Dr, Seabrook, TX 77586

HCAD #1145420010038
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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
918 Tangle Briar Dr, Seabrook, TX 77586
Building Size
3,778sqft
Total structure area from HCAD building records.
Elevation
12.98 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)
22.82 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)
$186,520
Based on HCAD building value of $286,954.
Depth-Damage (Neighborhood)
$215,045
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
43.2th percentile
Property Pollution Ranking
Moderate
Higher pollution than 57% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
25 thousandlbs
Above Typical
3.9x more than typical Houston property
≈ 1 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
25 thousandlbs
Above Typical
5.2x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
222lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
4
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)25,306 lbs25,084 lbs222 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)631 lbs601 lbs30 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 57% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 40-49th percentile (slightly higher than average).
📋
Top chemicals released near this property (past 10 years):
Methanol, Acetonitrile, Zinc compounds, Ethylene glycol, Ammonia
View the full list of 33 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(33 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-111,246 lbs0 lbs11,246 lbs
2Acetonitrile75-05-82,727 lbs0 lbs2,727 lbs
3Zinc compoundsN9822,389 lbs113 lbs2,502 lbs
4Ethylene glycol107-21-11,906 lbs0 lbs1,906 lbs
5Ammonia7664-41-71,741 lbs0 lbs1,741 lbs
6Ethylene oxide75-21-81,298 lbs0 lbs1,298 lbs
7n-Butyl alcohol71-36-31,230 lbs0 lbs1,230 lbs
8Vanadium compoundsN770945 lbs0 lbs960 lbs
9Diethanolamine111-42-2308 lbs0 lbs308 lbs
10Phosphorus (yellow or white)12185-10-3250 lbs0 lbs250 lbs
11Butyraldehyde123-72-8186 lbs0 lbs186 lbs
12Antimony And Antimony CompoundsN01085 lbs77 lbs161 lbs
134,4'-Isopropylidenediphenol80-05-7141 lbs0 lbs141 lbs
14Formic acid64-18-6137 lbs0 lbs137 lbs
15Naphthalene91-20-398 lbs0 lbs98 lbs
16Acrylonitrile107-13-185 lbs0 lbs85 lbs
17Antimony compoundsN01044 lbs25 lbs69 lbs
18Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51145 lbs0 lbs45 lbs
19Lead And Lead CompoundsN42033 lbs3 lbs37 lbs
20Sodium nitrite7632-00-033 lbs0 lbs33 lbs
21Zinc (fume or dust)7440-66-626 lbs0 lbs26 lbs
22Formaldehyde50-00-025 lbs0 lbs25 lbs
23Chlorobenzene108-90-724 lbs0 lbs24 lbs
24Lead compoundsN42017 lbs1 lbs18 lbs
251,2,4-Trimethylbenzene95-63-618 lbs0 lbs18 lbs
26Cadmium compoundsN07811 lbs0 lbs11 lbs
27Pyridine110-86-110 lbs0 lbs10 lbs
28Allyl alcohol107-18-610 lbs0 lbs10 lbs
29Chromium7440-47-37 lbs2 lbs9 lbs
30Methyl acrylate96-33-36 lbs0 lbs6 lbs
31Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs2 lbs
32Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs
33N-Methyl-2-pyrrolidone872-50-41 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Methanol, Ethylene oxide, Antimony And Antimony Compounds, Zinc compounds, Ethylene glycol
View the full list of 11 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(11 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-1385 lbs0 lbs385 lbs
2Ethylene oxide75-21-8145 lbs0 lbs145 lbs
3Antimony And Antimony CompoundsN01026 lbs19 lbs45 lbs
4Zinc compoundsN98213 lbs10 lbs22 lbs
5Ethylene glycol107-21-110 lbs0 lbs10 lbs
6Zinc (fume or dust)7440-66-69 lbs0 lbs9 lbs
7Chromium7440-47-34 lbs1 lbs4 lbs
8Acrylonitrile107-13-14 lbs0 lbs4 lbs
9Lead And Lead CompoundsN4202 lbs1 lbs3 lbs
10Methyl acrylate96-33-32 lbs0 lbs2 lbs
114,4'-Isopropylidenediphenol80-05-71 lbs0 lbs1 lbs
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