Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1021 Johnson St, Pasadena, TX 77506

HCAD #0650920050023
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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
1021 Johnson St, Pasadena, TX 77506
Building Size
1,274sqft
Total structure area from HCAD building records.
Elevation
26.56 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)
36.40 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
201.0 acres
68.2% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$32,618
Based on HCAD building value of $50,182.
Depth-Damage (Neighborhood)
$33,215
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
22.3th 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)
625 thousandlbs
Very High
95.8x more than typical Houston property
≈ 31 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
625 thousandlbs
Extremely High
129.6x 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)625,214 lbs624,752 lbs463 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)45,557 lbs45,542 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), Toluene
View the full list of 32 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(32 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-1267,145 lbs0 lbs267,145 lbs
2Ammonia7664-41-7107,863 lbs0 lbs107,863 lbs
3Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
4Xylene (mixed isomers)1330-20-747,090 lbs33 lbs47,132 lbs
5Toluene108-88-335,176 lbs27 lbs35,212 lbs
6n-Hexane110-54-323,595 lbs170 lbs23,766 lbs
71,2,4-Trimethylbenzene95-63-622,527 lbs105 lbs22,635 lbs
8Benzene71-43-213,609 lbs24 lbs13,635 lbs
9Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
10Ethylbenzene100-41-46,798 lbs22 lbs6,822 lbs
11Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
12Ethylene glycol107-21-15,553 lbs0 lbs5,553 lbs
13Formaldehyde50-00-02,284 lbs0 lbs2,284 lbs
14Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
15Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
16Formic acid64-18-61,406 lbs0 lbs1,406 lbs
17Cyclohexane110-82-7995 lbs0 lbs995 lbs
18Phenol108-95-2815 lbs0 lbs815 lbs
19Naphthalene91-20-3596 lbs21 lbs618 lbs
20Diethanolamine111-42-2600 lbs0 lbs600 lbs
21Cumene98-82-8437 lbs10 lbs448 lbs
22Nickel7440-02-0120 lbs0 lbs120 lbs
23Certain glycol ethersN23092 lbs0 lbs92 lbs
24Manganese7439-96-570 lbs0 lbs70 lbs
25Styrene100-42-556 lbs0 lbs56 lbs
26C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
27Chromium7440-47-340 lbs0 lbs40 lbs
28Lead And Lead CompoundsN4203 lbs22 lbs25 lbs
29Lead compoundsN4202 lbs22 lbs23 lbs
30Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
31Polycyclic aromatic compoundsN5903 lbs2 lbs4 lbs
32Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Methanol, Ammonia, Vinyl acetate, Xylene (mixed isomers), Toluene
View the full list of 28 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(28 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-115,730 lbs0 lbs15,730 lbs
2Ammonia7664-41-76,678 lbs0 lbs6,678 lbs
3Vinyl acetate108-05-45,850 lbs0 lbs5,850 lbs
4Xylene (mixed isomers)1330-20-73,651 lbs5 lbs3,656 lbs
5Toluene108-88-33,558 lbs3 lbs3,561 lbs
6n-Hexane110-54-32,883 lbs0 lbs2,883 lbs
71,2,4-Trimethylbenzene95-63-62,183 lbs0 lbs2,183 lbs
8Benzene71-43-21,415 lbs2 lbs1,417 lbs
9Dimethylamine124-40-3864 lbs0 lbs864 lbs
10Ethylene glycol107-21-1529 lbs0 lbs529 lbs
11Ethylbenzene100-41-4496 lbs3 lbs499 lbs
12Acrylonitrile107-13-1278 lbs0 lbs278 lbs
13Phenol108-95-2255 lbs0 lbs255 lbs
14Formaldehyde50-00-0255 lbs0 lbs255 lbs
15Propylene oxide75-56-9255 lbs0 lbs255 lbs
16Cyclohexane110-82-7232 lbs0 lbs232 lbs
17Formic acid64-18-6189 lbs0 lbs189 lbs
18Naphthalene91-20-355 lbs1 lbs56 lbs
19Acetaldehyde75-07-045 lbs0 lbs45 lbs
20Cumene98-82-833 lbs0 lbs33 lbs
21Manganese7439-96-530 lbs0 lbs30 lbs
22Chromium7440-47-325 lbs0 lbs25 lbs
23Nickel7440-02-024 lbs0 lbs24 lbs
24Certain glycol ethersN23011 lbs0 lbs11 lbs
25Diethanolamine111-42-210 lbs0 lbs10 lbs
26Styrene100-42-57 lbs0 lbs7 lbs
27Lead And Lead CompoundsN4201 lbs1 lbs1 lbs
28Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs
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