Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1702 Dunaway St, Houston, TX 77015

HCAD #0670800280010
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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 AE
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
1702 Dunaway St, Houston, TX 77015
Building Size
2,859sqft
Total structure area from HCAD building records.
Elevation
18.06 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
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)
27.90 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
294.9 acres
100.0% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$175,223
Based on HCAD building value of $269,575.
Depth-Damage (Neighborhood)
$152,663
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
Special Flood Hazard Area (SFHA): Flood insurance required for federally backed mortgages
#2
Obtain an Elevation Certificate to determine accurate flood insurance premiums
#3
Property elevation currently above simulated flood level
#4
Maintain flood insurance coverage as required in Special Flood Hazard Areas
#5
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#6
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
15.8th percentile
Property Pollution Ranking
High
Higher pollution than 84% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
1.92 millionlbs
Extremely High
294.1x more than typical Houston property
≈ 96 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
1.89 millionlbs
Extremely High
390.9x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
34 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
13
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)1,918,834 lbs1,885,094 lbs33,740 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)163,000 lbs162,503 lbs132 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 84% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile.
📋
Top chemicals released near this property (past 10 years):
Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), 1,3-Butadiene, Ethylene, n-Butyl alcohol
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)
1Ammonia7664-41-7712,493 lbs33,581 lbs746,074 lbs
2Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9278,278 lbs0 lbs278,278 lbs
31,3-Butadiene106-99-0203,018 lbs0 lbs203,018 lbs
4Ethylene74-85-1165,454 lbs0 lbs165,454 lbs
5n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
6n-Hexane110-54-3127,231 lbs9 lbs127,311 lbs
7Methanol67-56-165,798 lbs0 lbs65,798 lbs
8Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
9Xylene (mixed isomers)1330-20-729,092 lbs18 lbs29,181 lbs
10Toluene108-88-327,045 lbs17 lbs27,149 lbs
11Benzene71-43-225,267 lbs9 lbs25,294 lbs
12Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
13Cyclohexane110-82-714,660 lbs0 lbs14,660 lbs
14Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
15Isoprene78-79-513,272 lbs0 lbs13,272 lbs
16Ethylbenzene100-41-47,645 lbs16 lbs7,698 lbs
17Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
18Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-03,066 lbs0 lbs3,066 lbs
191,2,4-Trimethylbenzene95-63-62,808 lbs0 lbs3,023 lbs
20Nickel7440-02-0376 lbs1 lbs376 lbs
21Cumene98-82-8169 lbs0 lbs174 lbs
22Naphthalene91-20-3144 lbs0 lbs149 lbs
23Propylene115-07-1126 lbs0 lbs126 lbs
24Zinc compoundsN9820 lbs65 lbs65 lbs
25Anthracene120-12-731 lbs0 lbs31 lbs
26Polycyclic aromatic compoundsN59023 lbs0 lbs23 lbs
27Lead compoundsN4202 lbs11 lbs14 lbs
28Lead And Lead CompoundsN4200 lbs12 lbs12 lbs
29Chlorine7782-50-55 lbs0 lbs5 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, 1,3-Butadiene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ethylene, n-Hexane
View the full list of 19 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(19 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-781,744 lbs93 lbs81,837 lbs
21,3-Butadiene106-99-032,375 lbs0 lbs32,375 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,245 lbs0 lbs17,245 lbs
4Ethylene74-85-114,466 lbs0 lbs14,466 lbs
5n-Hexane110-54-36,435 lbs0 lbs6,506 lbs
6Xylene (mixed isomers)1330-20-73,231 lbs8 lbs3,310 lbs
7Toluene108-88-32,355 lbs8 lbs2,450 lbs
8Isoprene78-79-52,371 lbs0 lbs2,371 lbs
9Benzene71-43-21,538 lbs2 lbs1,558 lbs
10Cyclohexane110-82-7294 lbs0 lbs294 lbs
111,2,4-Trimethylbenzene95-63-6114 lbs0 lbs185 lbs
12Ethylbenzene100-41-4125 lbs8 lbs170 lbs
13Nickel7440-02-090 lbs0 lbs90 lbs
14Propylene115-07-183 lbs0 lbs83 lbs
15Cumene98-82-825 lbs0 lbs30 lbs
16Naphthalene91-20-311 lbs0 lbs16 lbs
17Zinc compoundsN9820 lbs5 lbs5 lbs
18Lead And Lead CompoundsN4200 lbs5 lbs5 lbs
19Lead compoundsN4200 lbs3 lbs3 lbs
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