Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 5618 Allendale Rd, Houston, TX 77017

HCAD #0772600080042
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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
5618 Allendale Rd, Houston, TX 77017
Building Size
1,200sqft
Total structure area from HCAD building records.
Elevation
29.32 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
156.3 acres
53.0% 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
10.3th percentile
Property Pollution Ranking
High
Higher pollution than 90% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
7.59 millionlbs
Extremely High
1163.0x more than typical Houston property
≈ 379 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
7.48 millionlbs
Extremely High
1550.4x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
112 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
9
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)7,588,005 lbs7,476,503 lbs111,502 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)560,573 lbs545,087 lbs15,486 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 90% 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):
Styrene, Ammonia, Propylene, Hydrogen cyanide, 1,3-Butadiene
View the full list of 38 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(38 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Styrene100-42-51,724,913 lbs7,271 lbs1,732,184 lbs
2Ammonia7664-41-71,395,305 lbs29,897 lbs1,425,202 lbs
3Propylene115-07-1951,117 lbs0 lbs951,117 lbs
4Hydrogen cyanide74-90-8818,552 lbs0 lbs818,552 lbs
51,3-Butadiene106-99-0452,684 lbs1 lbs452,685 lbs
6n-Hexane110-54-3391,060 lbs0 lbs391,067 lbs
7Ethylene74-85-1294,940 lbs0 lbs294,940 lbs
8Methyl tert-butyl ether1634-04-4267,534 lbs0 lbs267,534 lbs
9Toluene108-88-3227,742 lbs244 lbs228,010 lbs
10Xylene (mixed isomers)1330-20-7227,286 lbs627 lbs227,943 lbs
11Hydrogen sulfide7783-06-4206,443 lbs0 lbs206,443 lbs
12Benzene71-43-2203,264 lbs457 lbs203,732 lbs
13Diethanolamine111-42-2101,560 lbs0 lbs101,560 lbs
14Methanol67-56-158,935 lbs39,325 lbs98,261 lbs
15Cyclohexane110-82-752,501 lbs0 lbs52,510 lbs
16Ethylbenzene100-41-427,301 lbs63 lbs27,372 lbs
17N,N-Dimethylformamide68-12-222,161 lbs88 lbs22,249 lbs
18Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs22,127 lbs22,127 lbs
19N-Methyl-2-pyrrolidone872-50-417,750 lbs0 lbs17,750 lbs
20tert-Butyl alcohol75-65-015,263 lbs0 lbs15,263 lbs
21Sodium nitrite7632-00-00 lbs9,470 lbs9,470 lbs
22Naphthalene91-20-34,683 lbs75 lbs4,766 lbs
23Nitric acid7697-37-24,015 lbs0 lbs4,015 lbs
24Polycyclic aromatic compoundsN5902,949 lbs526 lbs3,753 lbs
251,2,4-Trimethylbenzene95-63-63,058 lbs0 lbs3,072 lbs
26Nickel compoundsN4951,754 lbs156 lbs1,910 lbs
27Cumene98-82-81,572 lbs0 lbs1,574 lbs
28Nickel And Nickel CompoundsN4951,505 lbs13 lbs1,518 lbs
29Phenol108-95-20 lbs1,155 lbs1,155 lbs
30Biphenyl92-52-4345 lbs0 lbs364 lbs
31Chlorine7782-50-5120 lbs0 lbs120 lbs
32Mercury7439-97-677 lbs0 lbs77 lbs
33Isoprene78-79-560 lbs0 lbs60 lbs
34Boron trifluoride7637-07-236 lbs0 lbs36 lbs
35Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
36Ethylene glycol107-21-10 lbs0 lbs9 lbs
37Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
38Benzo[g,h,i]perylene191-24-20 lbs7 lbs7 lbs
📋
Top chemicals released near this property (2024 only):
Styrene, Ammonia, Hydrogen cyanide, n-Hexane, Propylene
View the full list of 33 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(33 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Styrene100-42-5130,778 lbs291 lbs131,070 lbs
2Ammonia7664-41-7103,533 lbs78 lbs103,610 lbs
3Hydrogen cyanide74-90-873,728 lbs0 lbs73,728 lbs
4n-Hexane110-54-335,025 lbs0 lbs35,025 lbs
5Propylene115-07-134,316 lbs0 lbs34,316 lbs
61,3-Butadiene106-99-030,971 lbs0 lbs30,971 lbs
7Xylene (mixed isomers)1330-20-726,533 lbs10 lbs26,543 lbs
8Methanol67-56-16,850 lbs14,541 lbs21,391 lbs
9Methyl tert-butyl ether1634-04-418,336 lbs0 lbs18,336 lbs
10Ethylene74-85-117,089 lbs0 lbs17,089 lbs
11Toluene108-88-316,950 lbs4 lbs16,954 lbs
12Benzene71-43-215,436 lbs110 lbs15,546 lbs
13Hydrogen sulfide7783-06-413,422 lbs0 lbs13,422 lbs
14Diethanolamine111-42-210,082 lbs0 lbs10,082 lbs
15Cyclohexane110-82-74,048 lbs0 lbs4,048 lbs
16Ethylbenzene100-41-42,657 lbs1 lbs2,658 lbs
17N,N-Dimethylformamide68-12-21,641 lbs0 lbs1,641 lbs
18tert-Butyl alcohol75-65-01,021 lbs0 lbs1,021 lbs
19Naphthalene91-20-3754 lbs7 lbs761 lbs
20Nickel And Nickel CompoundsN495500 lbs5 lbs505 lbs
21Nitric acid7697-37-2500 lbs0 lbs500 lbs
22Polycyclic aromatic compoundsN590360 lbs55 lbs415 lbs
23Sodium nitrite7632-00-00 lbs371 lbs371 lbs
24Cumene98-82-8284 lbs0 lbs284 lbs
251,2,4-Trimethylbenzene95-63-6222 lbs0 lbs222 lbs
26Biphenyl92-52-433 lbs0 lbs33 lbs
27Phenol108-95-20 lbs8 lbs8 lbs
28Isoprene78-79-58 lbs0 lbs8 lbs
29Mercury7439-97-67 lbs0 lbs7 lbs
30Benzo[g,h,i]perylene191-24-20 lbs5 lbs5 lbs
31Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs2 lbs
32Boron trifluoride7637-07-21 lbs0 lbs1 lbs
33Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1 lbs1 lbs
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