Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 939 Mccarty St, Houston, TX 77029

HCAD #0401900020045
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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
939 Mccarty St, Houston, TX 77029
Elevation
38.64 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)
48.48 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
294.0 acres
99.7% 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 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
25.9th percentile
Property Pollution Ranking
Moderate
Higher pollution than 74% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
437 thousandlbs
Very High
66.9x more than typical Houston property
≈ 22 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
431 thousandlbs
Very High
89.4x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
6 thousandlbs
Very High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
19
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)436,721 lbs430,889 lbs5,833 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)63,984 lbs62,990 lbs994 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 74% 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, Styrene, Zinc compounds, Hydrogen sulfide, Xylene (mixed isomers)
View the full list of 37 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(37 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ammonia7664-41-7307,674 lbs0 lbs307,674 lbs
2Styrene100-42-578,251 lbs0 lbs78,252 lbs
3Zinc compoundsN98224,241 lbs5,003 lbs29,244 lbs
4Hydrogen sulfide7783-06-46,912 lbs0 lbs6,912 lbs
5Xylene (mixed isomers)1330-20-73,210 lbs0 lbs3,210 lbs
6Methanol67-56-13,036 lbs0 lbs3,036 lbs
7Polycyclic aromatic compoundsN5901,893 lbs2 lbs1,902 lbs
8Phenol108-95-21,390 lbs0 lbs1,390 lbs
9Ethylbenzene100-41-4917 lbs0 lbs918 lbs
10Propylene115-07-1810 lbs0 lbs810 lbs
11Manganese7439-96-5166 lbs336 lbs503 lbs
12Certain glycol ethersN230402 lbs0 lbs402 lbs
13Naphthalene91-20-3346 lbs0 lbs347 lbs
14Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
15Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
16Lead7439-92-1229 lbs22 lbs250 lbs
17Benzo[g,h,i]perylene191-24-2236 lbs0 lbs236 lbs
18Manganese compoundsN45018 lbs208 lbs226 lbs
19Chromium compounds (except for chromite ore mined in the Transvaal Region)N090141 lbs15 lbs156 lbs
201,2,4-Trimethylbenzene95-63-6125 lbs0 lbs125 lbs
21DiisocyanatesN120101 lbs4 lbs105 lbs
22Aluminum oxide (fibrous forms)1344-28-11 lbs98 lbs99 lbs
23Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs67 lbs67 lbs
24Nickel7440-02-023 lbs38 lbs61 lbs
25Lead compoundsN42038 lbs22 lbs60 lbs
26Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09032 lbs1 lbs33 lbs
27Nitric acid7697-37-230 lbs0 lbs30 lbs
28Aluminum (fume or dust)7429-90-524 lbs0 lbs24 lbs
29Chromium7440-47-316 lbs0 lbs20 lbs
30Barium And Barium CompoundsN0400 lbs16 lbs16 lbs
31Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51115 lbs0 lbs15 lbs
32Mercury7439-97-612 lbs0 lbs12 lbs
33Cobalt7440-48-40 lbs0 lbs4 lbs
34Lead And Lead CompoundsN4203 lbs1 lbs3 lbs
35Copper compoundsN1001 lbs1 lbs2 lbs
36Molybdenum trioxide1313-27-51 lbs0 lbs1 lbs
37Dioxin and dioxin-like compoundsN1501 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, Styrene, Zinc compounds, Lead, Polycyclic aromatic 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
2Styrene100-42-59,639 lbs0 lbs9,639 lbs
3Zinc compoundsN9823,493 lbs739 lbs4,232 lbs
4Lead7439-92-1228 lbs3 lbs232 lbs
5Polycyclic aromatic compoundsN590152 lbs0 lbs153 lbs
6Manganese compoundsN4502 lbs116 lbs118 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
12Methyl methacrylate80-62-610 lbs0 lbs10 lbs
13Chloroacetic acid79-11-810 lbs0 lbs10 lbs
14Lead compoundsN4205 lbs3 lbs8 lbs
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