Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1503 Harris Ave, Pasadena, TX 77506

HCAD #0741030040014
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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
1503 Harris Ave, Pasadena, TX 77506
Building Size
2,030sqft
Total structure area from HCAD building records.
Elevation
28.03 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)
37.88 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
281.3 acres
95.4% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$57,491
Based on HCAD building value of $88,448.
Depth-Damage (Neighborhood)
$54,508
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
21.8th percentile
Property Pollution Ranking
High
Higher pollution than 78% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
654 thousandlbs
Extremely High
100.3x more than typical Houston property
≈ 33 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
654 thousandlbs
Extremely High
135.6x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
463lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
8
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)654,144 lbs653,681 lbs463 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)50,665 lbs50,650 lbs15 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 78% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile.
📋
Top chemicals released near this property (past 10 years):
Methanol, Ammonia, Vinyl acetate, Xylene (mixed isomers), 1,2,4-Trimethylbenzene
View the full list of 38 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(38 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-1270,817 lbs0 lbs270,817 lbs
2Ammonia7664-41-792,863 lbs0 lbs92,863 lbs
3Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
4Xylene (mixed isomers)1330-20-745,322 lbs33 lbs45,364 lbs
51,2,4-Trimethylbenzene95-63-636,587 lbs105 lbs36,695 lbs
6Toluene108-88-329,713 lbs27 lbs29,749 lbs
7n-Hexane110-54-318,945 lbs170 lbs19,116 lbs
8Boron trifluoride7637-07-214,388 lbs0 lbs14,388 lbs
9Benzene71-43-211,221 lbs24 lbs11,247 lbs
10Ethylene glycol107-21-17,509 lbs0 lbs7,509 lbs
11Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
12Chlorine7782-50-56,383 lbs0 lbs6,383 lbs
13Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
14Ethylbenzene100-41-45,951 lbs22 lbs5,975 lbs
15Phenol108-95-25,078 lbs0 lbs5,078 lbs
16Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-05,066 lbs0 lbs5,066 lbs
17Zinc compoundsN9824,126 lbs0 lbs4,126 lbs
18Formaldehyde50-00-03,141 lbs0 lbs3,141 lbs
19Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
20Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
21o-Cresol95-48-71,585 lbs0 lbs1,585 lbs
22Cumene98-82-81,513 lbs10 lbs1,524 lbs
23Formic acid64-18-61,406 lbs0 lbs1,406 lbs
24Maleic anhydride108-31-61,009 lbs0 lbs1,009 lbs
25Cyclohexane110-82-7995 lbs0 lbs995 lbs
26Naphthalene91-20-3935 lbs21 lbs957 lbs
27Diethanolamine111-42-2805 lbs0 lbs805 lbs
28Nickel7440-02-0120 lbs0 lbs120 lbs
29Diphenylamine122-39-4118 lbs0 lbs118 lbs
30Certain glycol ethersN23092 lbs0 lbs92 lbs
31Manganese7439-96-570 lbs0 lbs70 lbs
32C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
33Chromium7440-47-340 lbs0 lbs40 lbs
34Lead And Lead CompoundsN4203 lbs22 lbs25 lbs
35Lead compoundsN4201 lbs22 lbs22 lbs
36Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
37Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
38Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Methanol, Ammonia, Vinyl acetate, 1,2,4-Trimethylbenzene, Xylene (mixed isomers)
View the full list of 34 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(34 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-115,808 lbs0 lbs15,808 lbs
2Ammonia7664-41-76,678 lbs0 lbs6,678 lbs
3Vinyl acetate108-05-45,850 lbs0 lbs5,850 lbs
41,2,4-Trimethylbenzene95-63-64,000 lbs0 lbs4,000 lbs
5Xylene (mixed isomers)1330-20-73,675 lbs5 lbs3,680 lbs
6Toluene108-88-32,900 lbs3 lbs2,903 lbs
7n-Hexane110-54-32,320 lbs0 lbs2,320 lbs
8Phenol108-95-22,206 lbs0 lbs2,206 lbs
9Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
10Benzene71-43-21,130 lbs2 lbs1,132 lbs
11Dimethylamine124-40-3864 lbs0 lbs864 lbs
12Ethylene glycol107-21-1530 lbs0 lbs530 lbs
13Chlorine7782-50-5487 lbs0 lbs487 lbs
14Ethylbenzene100-41-4427 lbs3 lbs430 lbs
15Formaldehyde50-00-0354 lbs0 lbs354 lbs
16Zinc compoundsN982323 lbs0 lbs323 lbs
17Acrylonitrile107-13-1278 lbs0 lbs278 lbs
18Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
19Propylene oxide75-56-9255 lbs0 lbs255 lbs
20Cyclohexane110-82-7232 lbs0 lbs232 lbs
21Formic acid64-18-6189 lbs0 lbs189 lbs
22Cumene98-82-8183 lbs0 lbs183 lbs
23Naphthalene91-20-3132 lbs1 lbs133 lbs
24Maleic anhydride108-31-6132 lbs0 lbs132 lbs
25o-Cresol95-48-788 lbs0 lbs88 lbs
26Acetaldehyde75-07-045 lbs0 lbs45 lbs
27Manganese7439-96-530 lbs0 lbs30 lbs
28Chromium7440-47-325 lbs0 lbs25 lbs
29Nickel7440-02-024 lbs0 lbs24 lbs
30Diphenylamine122-39-423 lbs0 lbs23 lbs
31Certain glycol ethersN23011 lbs0 lbs11 lbs
32Diethanolamine111-42-210 lbs0 lbs10 lbs
33Lead And Lead CompoundsN4201 lbs1 lbs1 lbs
34Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs
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