Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 11121 Munn St, Houston, TX 77029

HCAD #0751090020024
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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
11121 Munn St, Houston, TX 77029
Building Size
1,478sqft
Total structure area from HCAD building records.
Elevation
26.77 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)
36.61 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
218.4 acres
74.1% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$68,460
Based on HCAD building value of $105,324.
Depth-Damage (Neighborhood)
$67,594
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
40.6th percentile
Property Pollution Ranking
Moderate
Higher pollution than 59% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
48 thousandlbs
Above Typical
7.4x more than typical Houston property
≈ 2 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
48 thousandlbs
Above Typical
10.0x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
81lbs
Above Typical
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
5
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)48,260 lbs48,179 lbs81 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)3,300 lbs2,904 lbs32 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 59% 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):
n-Hexane, Xylene (mixed isomers), Toluene, Benzene, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
View the full list of 17 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(17 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1n-Hexane110-54-318,135 lbs9 lbs18,215 lbs
2Xylene (mixed isomers)1330-20-78,452 lbs18 lbs8,541 lbs
3Toluene108-88-36,739 lbs17 lbs6,843 lbs
4Benzene71-43-23,299 lbs9 lbs3,326 lbs
5Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-03,066 lbs0 lbs3,066 lbs
61,2,4-Trimethylbenzene95-63-62,855 lbs0 lbs2,926 lbs
7Methanol67-56-12,781 lbs0 lbs2,781 lbs
8Ethylbenzene100-41-41,809 lbs16 lbs1,862 lbs
9Nickel7440-02-0376 lbs1 lbs376 lbs
10Lead7439-92-1229 lbs1 lbs230 lbs
11Naphthalene91-20-3201 lbs0 lbs206 lbs
12Cumene98-82-8169 lbs0 lbs174 lbs
13Anthracene120-12-731 lbs0 lbs31 lbs
14Polycyclic aromatic compoundsN59023 lbs0 lbs23 lbs
15Mercury7439-97-612 lbs0 lbs12 lbs
16Lead compoundsN4202 lbs5 lbs7 lbs
17Lead And Lead CompoundsN4200 lbs5 lbs5 lbs
📋
Top chemicals released near this property (2024 only):
n-Hexane, Toluene, Benzene, Xylene (mixed isomers), Lead
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)
1n-Hexane110-54-31,070 lbs0 lbs1,141 lbs
2Toluene108-88-3520 lbs8 lbs615 lbs
3Benzene71-43-2440 lbs2 lbs460 lbs
4Xylene (mixed isomers)1330-20-7280 lbs8 lbs359 lbs
5Lead7439-92-1228 lbs1 lbs229 lbs
61,2,4-Trimethylbenzene95-63-6114 lbs0 lbs185 lbs
7Ethylbenzene100-41-4125 lbs8 lbs170 lbs
8Nickel7440-02-090 lbs0 lbs90 lbs
9Cumene98-82-825 lbs0 lbs30 lbs
10Naphthalene91-20-311 lbs0 lbs16 lbs
11Lead And Lead CompoundsN4200 lbs5 lbs5 lbs
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