Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 0 Melva, Houston, TX 77020

HCAD #0090200000010
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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
0 Melva, Houston, TX 77020
Elevation
43.11 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
158.1 acres
53.6% 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
24.5th percentile
Property Pollution Ranking
High
Higher pollution than 76% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
512 thousandlbs
Very High
78.5x more than typical Houston property
≈ 26 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
512 thousandlbs
Extremely High
106.2x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
107lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
18
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)512,332 lbs512,224 lbs107 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)44,191 lbs44,191 lbs0 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 76% 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):
Zinc compounds, n-Hexane, Styrene, Nitric acid, N-Methyl-2-pyrrolidone
View the full list of 29 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(29 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Zinc compoundsN982176,759 lbs0 lbs176,759 lbs
2n-Hexane110-54-3125,432 lbs0 lbs125,432 lbs
3Styrene100-42-572,717 lbs0 lbs72,717 lbs
4Nitric acid7697-37-235,509 lbs0 lbs35,509 lbs
5N-Methyl-2-pyrrolidone872-50-431,840 lbs0 lbs31,840 lbs
6Ammonia7664-41-725,000 lbs0 lbs25,000 lbs
7Toluene108-88-323,715 lbs0 lbs23,715 lbs
81,2,4-Trimethylbenzene95-63-68,648 lbs0 lbs8,648 lbs
9Lead compoundsN4203,123 lbs54 lbs3,177 lbs
10Cyclohexane110-82-72,389 lbs0 lbs2,389 lbs
11Copper compoundsN1002,021 lbs0 lbs2,021 lbs
12Lead And Lead CompoundsN4201,552 lbs0 lbs1,552 lbs
13Xylene (mixed isomers)1330-20-71,434 lbs0 lbs1,434 lbs
14Ethylene glycol107-21-1856 lbs0 lbs856 lbs
15Propylene115-07-1810 lbs0 lbs810 lbs
16Cadmium compoundsN078106 lbs0 lbs106 lbs
17Chromium compounds (except for chromite ore mined in the Transvaal Region)N09084 lbs0 lbs84 lbs
18Cadmium And Cadmium CompoundsN07870 lbs0 lbs70 lbs
19Cyanide compoundsN10650 lbs0 lbs50 lbs
20Chromium7440-47-319 lbs12 lbs35 lbs
21Manganese7439-96-52 lbs28 lbs31 lbs
22Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51125 lbs0 lbs25 lbs
23Nickel7440-02-021 lbs4 lbs25 lbs
24Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09019 lbs0 lbs19 lbs
25Nickel compoundsN49513 lbs0 lbs13 lbs
26Copper And Copper CompoundsN10010 lbs0 lbs10 lbs
27Copper7440-50-80 lbs6 lbs6 lbs
28Cobalt7440-48-40 lbs0 lbs4 lbs
29Lead7439-92-10 lbs3 lbs3 lbs
📋
Top chemicals released near this property (2024 only):
n-Hexane, Toluene, Zinc compounds, Styrene, Xylene (mixed isomers)
View the full list of 13 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(13 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1n-Hexane110-54-312,290 lbs0 lbs12,290 lbs
2Toluene108-88-311,886 lbs0 lbs11,886 lbs
3Zinc compoundsN9829,028 lbs0 lbs9,028 lbs
4Styrene100-42-57,400 lbs0 lbs7,400 lbs
5Xylene (mixed isomers)1330-20-71,434 lbs0 lbs1,434 lbs
61,2,4-Trimethylbenzene95-63-61,210 lbs0 lbs1,210 lbs
7Nitric acid7697-37-2755 lbs0 lbs755 lbs
8Lead And Lead CompoundsN420161 lbs0 lbs161 lbs
9Cadmium And Cadmium CompoundsN07810 lbs0 lbs10 lbs
10Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs6 lbs
11Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5115 lbs0 lbs5 lbs
12Cyanide compoundsN1065 lbs0 lbs5 lbs
13Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs
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