Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 603 E Sam Houston Pky S, Pasadena, TX 77503

HCAD #1374400010007
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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 AE
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
603 E Sam Houston Pky S, Pasadena, TX 77503
Elevation
29.77 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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
138.3 acres
46.9% 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
Special Flood Hazard Area (SFHA): Flood insurance required for federally backed mortgages
#2
Obtain an Elevation Certificate to determine accurate flood insurance premiums
#3
Property elevation currently above simulated flood level
#4
Maintain flood insurance coverage as required in Special Flood Hazard Areas
#5
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#6
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
16.0th 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)
1.86 millionlbs
Extremely High
285.3x more than typical Houston property
≈ 93 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
804 thousandlbs
Extremely High
166.8x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
1.06 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
7
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)1,861,114 lbs804,446 lbs1,056,668 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)134,707 lbs61,201 lbs73,507 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):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Acetophenone, Methanol, Vinyl chloride, Acetaldehyde
View the full list of 24 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(24 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
2Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
3Methanol67-56-1183,529 lbs7,563 lbs191,092 lbs
4Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
5Acetaldehyde75-07-092,740 lbs3,956 lbs96,696 lbs
6Cumene98-82-883,894 lbs1 lbs83,895 lbs
71,2,4-Trimethylbenzene95-63-614,715 lbs0 lbs14,715 lbs
8Boron trifluoride7637-07-214,388 lbs0 lbs14,388 lbs
9Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-013,465 lbs0 lbs13,465 lbs
10Ammonia7664-41-74,450 lbs2,681 lbs7,131 lbs
11Chlorine7782-50-56,383 lbs0 lbs6,383 lbs
12Phenol108-95-24,263 lbs0 lbs4,263 lbs
13Zinc compoundsN9824,126 lbs0 lbs4,126 lbs
14Xylene (mixed isomers)1330-20-72,873 lbs0 lbs2,873 lbs
15Ethylene glycol107-21-11,956 lbs0 lbs1,956 lbs
16o-Cresol95-48-71,585 lbs0 lbs1,585 lbs
17Maleic anhydride108-31-61,009 lbs0 lbs1,009 lbs
18Formaldehyde50-00-0857 lbs0 lbs857 lbs
19Naphthalene91-20-3418 lbs0 lbs418 lbs
20Diethanolamine111-42-2205 lbs0 lbs205 lbs
21Diphenylamine122-39-4118 lbs0 lbs118 lbs
22Chromium7440-47-30 lbs33 lbs33 lbs
23Nickel7440-02-00 lbs31 lbs31 lbs
24Piperonyl butoxide51-03-64 lbs0 lbs4 lbs
📋
Top chemicals released near this property (2024 only):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Acetophenone, Vinyl chloride, Acetaldehyde, Cumene
View the full list of 22 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(22 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
2Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
3Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
4Acetaldehyde75-07-08,300 lbs380 lbs8,680 lbs
5Cumene98-82-87,149 lbs0 lbs7,149 lbs
6Ammonia7664-41-74,450 lbs0 lbs4,450 lbs
7Methanol67-56-13,330 lbs336 lbs3,666 lbs
8Phenol108-95-21,951 lbs0 lbs1,951 lbs
91,2,4-Trimethylbenzene95-63-61,900 lbs0 lbs1,900 lbs
10Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
11Chlorine7782-50-5487 lbs0 lbs487 lbs
12Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0395 lbs0 lbs395 lbs
13Xylene (mixed isomers)1330-20-7385 lbs0 lbs385 lbs
14Zinc compoundsN982323 lbs0 lbs323 lbs
15Maleic anhydride108-31-6132 lbs0 lbs132 lbs
16Formaldehyde50-00-099 lbs0 lbs99 lbs
17o-Cresol95-48-788 lbs0 lbs88 lbs
18Naphthalene91-20-386 lbs0 lbs86 lbs
19Diphenylamine122-39-423 lbs0 lbs23 lbs
20Nickel7440-02-00 lbs2 lbs2 lbs
21Chromium7440-47-30 lbs2 lbs2 lbs
22Ethylene glycol107-21-11 lbs0 lbs1 lbs
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