Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1109 Ellen Dr, Deer Park, TX 77536

HCAD #0961900000003
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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
1109 Ellen Dr, Deer Park, TX 77536
Building Size
1,204sqft
Total structure area from HCAD building records.
Elevation
29.31 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
62.7 acres
21.3% 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
18.1th percentile
Property Pollution Ranking
High
Higher pollution than 82% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
1.28 millionlbs
Extremely High
196.4x more than typical Houston property
≈ 64 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
967 thousandlbs
Extremely High
200.5x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
314 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
10
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)1,281,130 lbs967,005 lbs314,125 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)100,269 lbs72,505 lbs27,764 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 82% 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):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Methanol, Ammonia, Vinyl chloride, n-Hexane
View the full list of 42 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(42 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs256,774 lbs256,774 lbs
2Methanol67-56-1177,902 lbs37,738 lbs215,640 lbs
3Ammonia7664-41-7214,579 lbs0 lbs214,579 lbs
4Vinyl chloride75-01-4122,061 lbs46 lbs122,106 lbs
5n-Hexane110-54-3100,727 lbs0 lbs100,727 lbs
6Acetaldehyde75-07-064,543 lbs1,275 lbs65,818 lbs
7Propylene oxide75-56-953,747 lbs0 lbs53,747 lbs
8Ethylene glycol107-21-130,851 lbs9,387 lbs40,238 lbs
9Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-028,908 lbs0 lbs28,908 lbs
10Ethylene74-85-125,202 lbs0 lbs25,202 lbs
11Toluene108-88-321,587 lbs8 lbs21,595 lbs
121,3-Butadiene106-99-019,768 lbs45 lbs19,813 lbs
13Butyl acrylate141-32-218,363 lbs0 lbs18,363 lbs
14Hydrogen sulfide7783-06-417,373 lbs0 lbs17,373 lbs
15Zinc compoundsN9826,712 lbs6,803 lbs13,516 lbs
16Chloroethane75-00-313,375 lbs0 lbs13,375 lbs
17Cyclohexane110-82-712,948 lbs0 lbs12,948 lbs
18Maleic anhydride108-31-612,243 lbs0 lbs12,243 lbs
19Trade SecretTRD SECRT9,705 lbs0 lbs9,705 lbs
20Chlorine7782-50-57,352 lbs0 lbs7,352 lbs
21DiisocyanatesN1204,007 lbs0 lbs4,007 lbs
22Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs1,936 lbs1,936 lbs
23Nonylphenol EthoxylatesN5351,381 lbs0 lbs1,381 lbs
24Certain glycol ethersN2301,237 lbs0 lbs1,237 lbs
25Isoprene78-79-5923 lbs0 lbs923 lbs
26Aluminum (fume or dust)7429-90-5462 lbs0 lbs462 lbs
27Acrylic acid79-10-7348 lbs0 lbs348 lbs
28Chloromethane74-87-3326 lbs0 lbs326 lbs
29Barium And Barium CompoundsN0400 lbs99 lbs99 lbs
30NonylphenolN53061 lbs0 lbs61 lbs
31Diethanolamine111-42-257 lbs0 lbs57 lbs
32Nitric acid7697-37-249 lbs0 lbs49 lbs
33Methyl acrylate96-33-347 lbs0 lbs47 lbs
34Ethyl acrylate140-88-535 lbs0 lbs35 lbs
35Triethylamine121-44-834 lbs0 lbs34 lbs
36Manganese compoundsN45026 lbs0 lbs26 lbs
37Methyl methacrylate80-62-625 lbs0 lbs25 lbs
38Diphenylamine122-39-410 lbs14 lbs24 lbs
39Boron trifluoride7637-07-211 lbs0 lbs11 lbs
401,2,4-Trimethylbenzene95-63-610 lbs0 lbs10 lbs
41Xylene (mixed isomers)1330-20-76 lbs0 lbs6 lbs
42N-Methyl-2-pyrrolidone872-50-43 lbs0 lbs3 lbs
📋
Top chemicals released near this property (2024 only):
Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Methanol, n-Hexane, Vinyl chloride
View the full list of 26 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(26 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ammonia7664-41-725,450 lbs0 lbs25,450 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs21,502 lbs21,502 lbs
3Methanol67-56-15,077 lbs5,174 lbs10,251 lbs
4n-Hexane110-54-39,618 lbs0 lbs9,618 lbs
5Vinyl chloride75-01-47,883 lbs3 lbs7,886 lbs
6Trade SecretTRD SECRT5,677 lbs0 lbs5,677 lbs
7Acetaldehyde75-07-03,861 lbs161 lbs4,022 lbs
8Ethylene74-85-13,435 lbs0 lbs3,435 lbs
9DiisocyanatesN1201,843 lbs0 lbs1,843 lbs
10Toluene108-88-31,587 lbs3 lbs1,590 lbs
11Cyclohexane110-82-71,566 lbs0 lbs1,566 lbs
12Ethylene glycol107-21-11,527 lbs0 lbs1,527 lbs
13Chloroethane75-00-31,429 lbs0 lbs1,429 lbs
14Zinc compoundsN982426 lbs912 lbs1,338 lbs
151,3-Butadiene106-99-0993 lbs9 lbs1,002 lbs
16Maleic anhydride108-31-6701 lbs0 lbs701 lbs
17Butyl acrylate141-32-2597 lbs0 lbs597 lbs
18Certain glycol ethersN230326 lbs0 lbs326 lbs
19Hydrogen sulfide7783-06-4235 lbs0 lbs235 lbs
20Acrylic acid79-10-7127 lbs0 lbs127 lbs
21Chlorine7782-50-5101 lbs0 lbs101 lbs
22Aluminum (fume or dust)7429-90-526 lbs0 lbs26 lbs
23Nitric acid7697-37-211 lbs0 lbs11 lbs
24Ethyl acrylate140-88-56 lbs0 lbs6 lbs
25NonylphenolN5302 lbs0 lbs2 lbs
26Propylene oxide75-56-91 lbs0 lbs1 lbs
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