Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 3929 N Mccarty St, Houston, TX 77013

HCAD #1149210000005
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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
3929 N Mccarty St, Houston, TX 77013
Elevation
39.38 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very Low
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
Very Low
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
99.0 acres
33.6% 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
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
22.8th percentile
Property Pollution Ranking
High
Higher pollution than 77% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
588 thousandlbs
Very High
90.1x more than typical Houston property
≈ 29 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
581 thousandlbs
Extremely High
120.4x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
7 thousandlbs
Very High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
20
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)588,036 lbs580,537 lbs7,500 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)72,849 lbs71,331 lbs1,518 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 77% 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):
Ammonia, Xylene (mixed isomers), n-Butyl alcohol, Zinc compounds, Phenol
View the full list of 40 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(40 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ammonia7664-41-7307,674 lbs0 lbs307,674 lbs
2Xylene (mixed isomers)1330-20-7143,658 lbs0 lbs143,658 lbs
3n-Butyl alcohol71-36-333,617 lbs0 lbs33,617 lbs
4Zinc compoundsN98226,745 lbs6,629 lbs33,374 lbs
5Phenol108-95-224,642 lbs0 lbs24,642 lbs
6Ethylbenzene100-41-416,863 lbs0 lbs16,863 lbs
7Hydrogen sulfide7783-06-46,912 lbs0 lbs6,912 lbs
8Styrene100-42-55,373 lbs0 lbs5,373 lbs
9Methyl isobutyl ketone108-10-13,355 lbs0 lbs3,355 lbs
10Toluene108-88-31,871 lbs0 lbs3,044 lbs
11Methanol67-56-12,781 lbs0 lbs2,781 lbs
12Formaldehyde50-00-01,893 lbs0 lbs1,893 lbs
13Polycyclic aromatic compoundsN5901,144 lbs1 lbs1,145 lbs
14Methyl tert-butyl ether1634-04-41,021 lbs0 lbs1,021 lbs
15Ethylene glycol107-21-1605 lbs0 lbs605 lbs
16Manganese7439-96-5166 lbs334 lbs501 lbs
171,2,4-Trimethylbenzene95-63-6443 lbs0 lbs443 lbs
18Naphthalene91-20-3261 lbs0 lbs261 lbs
19Lead7439-92-1179 lbs66 lbs245 lbs
20Manganese compoundsN45018 lbs208 lbs226 lbs
21Benzo[g,h,i]perylene191-24-2221 lbs0 lbs221 lbs
22Benzene71-43-2218 lbs0 lbs218 lbs
23n-Hexane110-54-3208 lbs0 lbs208 lbs
24Zinc (fume or dust)7440-66-6201 lbs0 lbs201 lbs
25Chromium compounds (except for chromite ore mined in the Transvaal Region)N090141 lbs15 lbs156 lbs
26DiisocyanatesN120101 lbs4 lbs105 lbs
27Lead compoundsN42078 lbs22 lbs100 lbs
28Aluminum oxide (fibrous forms)1344-28-11 lbs98 lbs99 lbs
29Copper7440-50-867 lbs0 lbs67 lbs
30Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs67 lbs67 lbs
31Nickel7440-02-03 lbs38 lbs41 lbs
32Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09032 lbs1 lbs33 lbs
33Aluminum (fume or dust)7429-90-524 lbs0 lbs24 lbs
34Barium And Barium CompoundsN0400 lbs16 lbs16 lbs
35Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51115 lbs0 lbs15 lbs
36Lead And Lead CompoundsN4203 lbs1 lbs3 lbs
37Copper compoundsN1001 lbs1 lbs2 lbs
38Molybdenum trioxide1313-27-51 lbs0 lbs1 lbs
39Dioxin and dioxin-like compoundsN1501 lbs0 lbs1 lbs
40Cumene98-82-81 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, Xylene (mixed isomers), Zinc compounds, Styrene, Manganese compounds
View the full list of 14 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(14 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-749,429 lbs0 lbs49,429 lbs
2Xylene (mixed isomers)1330-20-716,019 lbs0 lbs16,019 lbs
3Zinc compoundsN9823,493 lbs1,262 lbs4,755 lbs
4Styrene100-42-52,239 lbs0 lbs2,239 lbs
5Manganese compoundsN4502 lbs116 lbs118 lbs
6Polycyclic aromatic compoundsN590113 lbs0 lbs113 lbs
7Aluminum oxide (fibrous forms)1344-28-10 lbs42 lbs42 lbs
8Manganese7439-96-50 lbs41 lbs41 lbs
9Nickel7440-02-00 lbs31 lbs31 lbs
10Benzo[g,h,i]perylene191-24-221 lbs0 lbs21 lbs
11Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs19 lbs19 lbs
12Ethylene glycol107-21-110 lbs0 lbs10 lbs
13Lead compoundsN4205 lbs3 lbs8 lbs
14Lead7439-92-10 lbs5 lbs5 lbs
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