Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 911 Harbor St, Houston, TX 77020

HCAD #0181530000019
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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
911 Harbor St, Houston, TX 77020
Building Size
1,190sqft
Total structure area from HCAD building records.
Elevation
42.57 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
39.1 acres
13.3% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$0
Property not flooded. No damage to calculate.
Depth-Damage (Neighborhood)
$0
Property not flooded. No damage to calculate.
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
19.7th percentile
Property Pollution Ranking
High
Higher pollution than 80% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
902 thousandlbs
Extremely High
138.2x more than typical Houston property
≈ 45 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
896 thousandlbs
Extremely High
185.8x 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
23
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)901,725 lbs895,875 lbs5,851 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)115,856 lbs114,863 lbs993 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 80% 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-Hexane, Zinc compounds, Styrene
View the full list of 46 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(46 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ammonia7664-41-7311,444 lbs0 lbs311,444 lbs
2Xylene (mixed isomers)1330-20-7140,694 lbs0 lbs140,694 lbs
3n-Hexane110-54-3125,432 lbs0 lbs125,432 lbs
4Zinc compoundsN982107,713 lbs4,977 lbs112,690 lbs
5Styrene100-42-578,090 lbs0 lbs78,090 lbs
6n-Butyl alcohol71-36-333,617 lbs0 lbs33,617 lbs
7Toluene108-88-324,480 lbs0 lbs25,653 lbs
8Phenol108-95-224,642 lbs0 lbs24,642 lbs
9Ethylbenzene100-41-415,965 lbs0 lbs15,965 lbs
101,2,4-Trimethylbenzene95-63-68,648 lbs0 lbs8,648 lbs
11Hydrogen sulfide7783-06-46,912 lbs0 lbs6,912 lbs
12Methyl isobutyl ketone108-10-13,355 lbs0 lbs3,355 lbs
13Cyclohexane110-82-72,389 lbs0 lbs2,389 lbs
14Methanol67-56-12,104 lbs0 lbs2,104 lbs
15Formaldehyde50-00-01,893 lbs0 lbs1,893 lbs
16Lead compoundsN4201,744 lbs22 lbs1,766 lbs
17Polycyclic aromatic compoundsN5901,170 lbs1 lbs1,170 lbs
18Copper compoundsN1001,021 lbs1 lbs1,022 lbs
19Ethylene glycol107-21-1856 lbs0 lbs856 lbs
20Propylene115-07-1810 lbs0 lbs810 lbs
21Lead And Lead CompoundsN420740 lbs1 lbs740 lbs
22Manganese7439-96-5168 lbs363 lbs531 lbs
23Certain glycol ethersN230402 lbs0 lbs402 lbs
24Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
25Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
26Manganese compoundsN45018 lbs208 lbs226 lbs
27Benzo[g,h,i]perylene191-24-2221 lbs0 lbs221 lbs
28Zinc (fume or dust)7440-66-6192 lbs0 lbs192 lbs
29Naphthalene91-20-3162 lbs0 lbs162 lbs
30Chromium compounds (except for chromite ore mined in the Transvaal Region)N090141 lbs15 lbs156 lbs
31DiisocyanatesN120101 lbs4 lbs105 lbs
32Aluminum oxide (fibrous forms)1344-28-11 lbs98 lbs99 lbs
33Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs67 lbs67 lbs
34Nickel7440-02-024 lbs41 lbs65 lbs
35Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09032 lbs1 lbs33 lbs
36Chromium7440-47-319 lbs7 lbs30 lbs
37Nitric acid7697-37-230 lbs0 lbs30 lbs
38Aluminum (fume or dust)7429-90-524 lbs0 lbs24 lbs
39Lead7439-92-10 lbs24 lbs24 lbs
40Barium And Barium CompoundsN0400 lbs16 lbs16 lbs
41Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51115 lbs0 lbs15 lbs
42Copper And Copper CompoundsN10010 lbs0 lbs10 lbs
43Copper7440-50-80 lbs6 lbs6 lbs
44Cobalt7440-48-40 lbs0 lbs4 lbs
45Molybdenum trioxide1313-27-51 lbs0 lbs1 lbs
46Dioxin and dioxin-like compoundsN1501 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, Xylene (mixed isomers), Zinc compounds, n-Hexane, Toluene
View the full list of 20 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(20 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-749,429 lbs0 lbs49,429 lbs
2Xylene (mixed isomers)1330-20-717,453 lbs0 lbs17,453 lbs
3Zinc compoundsN98212,507 lbs739 lbs13,245 lbs
4n-Hexane110-54-312,290 lbs0 lbs12,290 lbs
5Toluene108-88-311,886 lbs0 lbs11,886 lbs
6Styrene100-42-59,639 lbs0 lbs9,639 lbs
71,2,4-Trimethylbenzene95-63-61,210 lbs0 lbs1,210 lbs
8Lead And Lead CompoundsN420161 lbs0 lbs161 lbs
9Methanol67-56-1125 lbs0 lbs125 lbs
10Manganese compoundsN4502 lbs116 lbs118 lbs
11Polycyclic aromatic compoundsN590115 lbs0 lbs115 lbs
12Aluminum oxide (fibrous forms)1344-28-10 lbs42 lbs42 lbs
13Manganese7439-96-50 lbs41 lbs41 lbs
14Nickel7440-02-00 lbs31 lbs31 lbs
15Benzo[g,h,i]perylene191-24-221 lbs0 lbs21 lbs
16Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs19 lbs19 lbs
17Methyl methacrylate80-62-610 lbs0 lbs10 lbs
18Chloroacetic acid79-11-810 lbs0 lbs10 lbs
19Lead compoundsN4205 lbs3 lbs8 lbs
20Lead7439-92-10 lbs3 lbs3 lbs
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