Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 9811 Turnbow St, Houston, TX 77029

HCAD #0141220560003
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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
9811 Turnbow St, Houston, TX 77029
Building Size
2,776sqft
Total structure area from HCAD building records.
Elevation
31.69 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
N/A
Data not available
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
7.4th percentile
Property Pollution Ranking
Very High
Higher pollution than 93% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
15.73 millionlbs
Extremely High
2411.4x more than typical Houston property
≈ 787 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
2.7 millionlbs
Extremely High
560.3x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
13.03 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
11
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)15,732,760 lbs2,701,829 lbs13,030,931 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,295,646 lbs242,943 lbs2,052,703 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 93% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).
📋
Top chemicals released near this property (past 10 years):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Ammonia, Ozone, Xylene (mixed isomers)
View the full list of 52 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(52 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs13,016,167 lbs13,016,167 lbs
2Hydrogen cyanide74-90-81,408,014 lbs0 lbs1,408,014 lbs
3Ammonia7664-41-7580,427 lbs8,000 lbs588,427 lbs
4Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
5Xylene (mixed isomers)1330-20-796,699 lbs0 lbs96,699 lbs
6Toluene108-88-394,346 lbs17 lbs94,363 lbs
7Cyclohexane110-82-780,270 lbs0 lbs80,270 lbs
8n-Hexane110-54-376,253 lbs0 lbs76,253 lbs
9Benzene71-43-260,178 lbs10 lbs60,188 lbs
10Propylene115-07-154,163 lbs0 lbs54,163 lbs
11Ethylbenzene100-41-421,378 lbs50 lbs21,429 lbs
12Hydrogen sulfide7783-06-417,681 lbs3,527 lbs21,208 lbs
131,2,4-Trimethylbenzene95-63-617,458 lbs0 lbs17,458 lbs
14Ethylene74-85-116,593 lbs0 lbs16,593 lbs
15Carbon disulfide75-15-08,557 lbs0 lbs8,557 lbs
161,3-Butadiene106-99-08,274 lbs0 lbs8,274 lbs
17Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-96,697 lbs0 lbs6,697 lbs
18Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
19Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
20Naphthalene91-20-34,613 lbs0 lbs4,614 lbs
21Manganese7439-96-54,228 lbs0 lbs4,228 lbs
22Phenol108-95-21,635 lbs1,804 lbs3,439 lbs
23Methanol67-56-13,095 lbs0 lbs3,095 lbs
24Polycyclic aromatic compoundsN5902,356 lbs1 lbs2,365 lbs
25Styrene100-42-52,274 lbs0 lbs2,275 lbs
26Cumene98-82-82,256 lbs0 lbs2,256 lbs
27Zinc compoundsN9821,466 lbs26 lbs1,492 lbs
28Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
29Nickel compoundsN495654 lbs489 lbs1,143 lbs
30Phenanthrene85-01-8937 lbs0 lbs937 lbs
31Lead7439-92-1489 lbs127 lbs616 lbs
32Vanadium compoundsN77079 lbs509 lbs588 lbs
33Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0461 lbs0 lbs461 lbs
34Certain glycol ethersN230402 lbs0 lbs402 lbs
35Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
36Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
37Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
38Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
39Cobalt compoundsN096131 lbs24 lbs155 lbs
40Lead And Lead CompoundsN420140 lbs6 lbs146 lbs
41Lead compoundsN42042 lbs6 lbs48 lbs
42Anthracene120-12-744 lbs0 lbs44 lbs
43Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
44Antimony compoundsN01038 lbs0 lbs38 lbs
45Nickel7440-02-035 lbs0 lbs35 lbs
46Mercury compoundsN45832 lbs0 lbs32 lbs
47Nitric acid7697-37-230 lbs0 lbs30 lbs
48Benzo[g,h,i]perylene191-24-228 lbs0 lbs28 lbs
49Mercury7439-97-612 lbs0 lbs12 lbs
50Mercury And Mercury CompoundsN45812 lbs0 lbs12 lbs
51tert-Butyl alcohol75-65-07 lbs0 lbs7 lbs
52Dioxin and dioxin-like compoundsN1501 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Ammonia, Ozone, Cyclohexane
View the full list of 35 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(35 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,051,661 lbs2,051,661 lbs
2Hydrogen cyanide74-90-8103,731 lbs0 lbs103,731 lbs
3Ammonia7664-41-777,541 lbs1,027 lbs78,568 lbs
4Ozone10028-15-625,701 lbs0 lbs25,701 lbs
5Cyclohexane110-82-77,486 lbs0 lbs7,486 lbs
6Toluene108-88-36,118 lbs4 lbs6,122 lbs
7Benzene71-43-24,935 lbs4 lbs4,939 lbs
8Xylene (mixed isomers)1330-20-74,353 lbs0 lbs4,353 lbs
9Propylene115-07-13,529 lbs0 lbs3,529 lbs
10Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
111,2,4-Trimethylbenzene95-63-61,449 lbs0 lbs1,449 lbs
12Ethylbenzene100-41-41,412 lbs4 lbs1,416 lbs
13Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
141,3-Butadiene106-99-0734 lbs0 lbs734 lbs
15Ethylene74-85-1620 lbs0 lbs620 lbs
16n-Hexane110-54-3607 lbs0 lbs607 lbs
17Carbon disulfide75-15-0243 lbs0 lbs243 lbs
18Cumene98-82-8241 lbs0 lbs241 lbs
19Naphthalene91-20-3241 lbs0 lbs241 lbs
20Lead7439-92-1228 lbs1 lbs229 lbs
21Phenol108-95-2164 lbs0 lbs164 lbs
22Styrene100-42-5159 lbs0 lbs159 lbs
23Zinc compoundsN982132 lbs0 lbs132 lbs
24Hydrogen sulfide7783-06-4123 lbs0 lbs123 lbs
25Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9101 lbs0 lbs101 lbs
26Lead And Lead CompoundsN42096 lbs2 lbs98 lbs
27Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
28Polycyclic aromatic compoundsN59038 lbs0 lbs38 lbs
29Phenanthrene85-01-836 lbs0 lbs36 lbs
30Methyl methacrylate80-62-610 lbs0 lbs10 lbs
31Chloroacetic acid79-11-810 lbs0 lbs10 lbs
32Mercury And Mercury CompoundsN4588 lbs0 lbs8 lbs
33Benzo[g,h,i]perylene191-24-28 lbs0 lbs8 lbs
34Anthracene120-12-71 lbs0 lbs1 lbs
35Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs
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