Data-driven insights for local properties

📊 Environmental Assessment Report

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.

🌊 Part 1: Flood Risk Analysis

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
217 E 11TH ST DEER PARK 77536
Building Size
1,616 sqft
Total structure area from HCAD building records.
Elevation
24.83 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 Estimate (HCAD Valuation)
$0
Property not flooded at current water level. No damage to calculate.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Property not flooded at current water level. No damage to calculate.
Analysis Method
COG Bathtub 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: 14.83 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.

  • FEMA Zone X (minimal hazard) - flood insurance available at preferred rates.
  • Review the interactive flood simulator to understand how different rainfall events could affect this property.
  • Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
Very High
Higher pollution than 93% of Houston homes
This ranking compares pollution levels within 2 miles of this property against 10,000 randomly sampled Houston metro properties. Lower percentiles indicate higher pollution exposure.
Industrial Pollution Nearby (Last 10 Years)
17.03 million lbs
Extremely High
2610.7x more than typical Houston property
≈ 852 dump trucks of chemicals within 2 miles
Total chemical releases from all industrial facilities within a 2-mile radius over the past decade (2014–2024). Data from EPA's Toxic Release Inventory tracking air, water, and land discharges.
💨 Air Pollution (Last 10 Years)
10.19 million lbs
Extremely High
2112.8x more than typical Houston property
Chemicals released into the air from nearby facilities over 10 years. Includes both fugitive emissions (leaks, evaporation) and stack emissions (smokestacks, vents). May affect local air quality.
💧 Water Pollution (Last 10 Years)
6.84 million lbs
Extremely High
Most Houston properties have none nearby
Chemical discharges to surface water (bayous, streams, drainage) from industrial facilities within 2 miles over the past decade. May impact local waterways and drainage systems.

❤️ 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)17,032,783 lbs10,188,476 lbs6,844,307 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)1,622,916 lbs1,215,183 lbs258,020 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), Ethylene, 1,3-Butadiene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Propylene

View the full list of 96 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (96 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs6,472,333 lbs6,472,333 lbs
2Ethylene74-85-11,659,814 lbs0 lbs1,659,814 lbs
31,3-Butadiene106-99-01,021,400 lbs45 lbs1,021,445 lbs
4Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-91,016,215 lbs0 lbs1,016,215 lbs
5Propylene115-07-1989,819 lbs0 lbs989,819 lbs
6Cumene98-82-8851,544 lbs882 lbs852,426 lbs
7Ammonia7664-41-7663,258 lbs12,151 lbs675,409 lbs
8Phenol108-95-2634,156 lbs1,108 lbs635,264 lbs
9Toluene108-88-3505,020 lbs199 lbs505,219 lbs
10Benzene71-43-2434,346 lbs242 lbs434,588 lbs
11Methanol67-56-1266,482 lbs133,638 lbs400,120 lbs
12Xylene (mixed isomers)1330-20-7255,366 lbs179 lbs255,545 lbs
13Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0234,060 lbs0 lbs234,060 lbs
14Hydrogen sulfide7783-06-4211,383 lbs2,545 lbs213,928 lbs
15n-Hexane110-54-3173,420 lbs10 lbs173,430 lbs
16Vinyl chloride75-01-4166,484 lbs46 lbs166,529 lbs
17Hydrogen cyanide74-90-8126,501 lbs2,741 lbs129,242 lbs
184,4'-Isopropylidenediphenol80-05-7125,700 lbs0 lbs125,700 lbs
191,2-Dichloroethane107-06-2125,688 lbs0 lbs125,688 lbs
20Epichlorohydrin106-89-8121,011 lbs3,811 lbs124,822 lbs
21Sodium nitrite7632-00-00 lbs102,300 lbs102,300 lbs
22Acetonitrile75-05-883,752 lbs12,219 lbs95,971 lbs
23Ethylbenzene100-41-473,430 lbs222 lbs73,652 lbs
24Acetaldehyde75-07-070,863 lbs1,398 lbs72,261 lbs
25Isoprene78-79-569,617 lbs137 lbs69,754 lbs
26Zinc compoundsN9825,641 lbs62,059 lbs67,700 lbs
27Propylene oxide75-56-953,747 lbs0 lbs53,747 lbs
28Ethylene glycol107-21-131,251 lbs9,387 lbs40,638 lbs
29Diethanolamine111-42-235,781 lbs0 lbs35,781 lbs
30Naphthalene91-20-321,426 lbs206 lbs21,632 lbs
31Dichloromethane75-09-219,581 lbs39 lbs19,620 lbs
32Butyl acrylate141-32-218,363 lbs0 lbs18,363 lbs
33Cyclohexane110-82-713,253 lbs284 lbs13,537 lbs
34Maleic anhydride108-31-612,243 lbs0 lbs12,243 lbs
35Chlorine7782-50-511,978 lbs0 lbs11,978 lbs
36Cumene hydroperoxide80-15-911,006 lbs0 lbs11,006 lbs
37Trade SecretTRD SECRT9,705 lbs0 lbs9,705 lbs
381,2,4-Trimethylbenzene95-63-68,919 lbs0 lbs8,919 lbs
39Dicyclopentadiene77-73-68,670 lbs0 lbs8,670 lbs
40Acetophenone98-86-26,714 lbs1,462 lbs8,176 lbs
41Allyl alcohol107-18-67,427 lbs626 lbs8,053 lbs
42sec-Butyl alcohol78-92-21,946 lbs5,600 lbs7,546 lbs
43Glycidol556-52-52,841 lbs4,410 lbs7,251 lbs
44Manganese compoundsN450137 lbs5,037 lbs5,174 lbs
45Methyl isobutyl ketone108-10-14,714 lbs2 lbs4,716 lbs
46Tetrachloroethylene127-18-44,241 lbs176 lbs4,417 lbs
47DiisocyanatesN1204,007 lbs0 lbs4,007 lbs
48Nickel compoundsN49580 lbs3,764 lbs3,844 lbs
49Styrene100-42-53,800 lbs16 lbs3,816 lbs
50Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs1,936 lbs1,936 lbs
51Lead compoundsN420509 lbs1,376 lbs1,886 lbs
52Phenanthrene85-01-81,547 lbs159 lbs1,706 lbs
531,1,2-Trichloroethane79-00-51,537 lbs0 lbs1,537 lbs
54Nonylphenol EthoxylatesN5351,381 lbs0 lbs1,381 lbs
55Bis(2-chloroethyl) ether111-44-4950 lbs0 lbs950 lbs
56Polycyclic aromatic compoundsN590576 lbs130 lbs782 lbs
57Lead And Lead CompoundsN420267 lbs421 lbs689 lbs
58Chloroform67-66-3638 lbs0 lbs638 lbs
59Anthracene120-12-7534 lbs70 lbs604 lbs
60Trichloroethylene79-01-6603 lbs0 lbs603 lbs
61Cresol (mixed isomers)1319-77-3430 lbs146 lbs576 lbs
62Certain glycol ethersN230557 lbs0 lbs557 lbs
63Acrylic acid79-10-7348 lbs0 lbs348 lbs
64Pentachloroethane76-01-7323 lbs0 lbs323 lbs
65Mercury compoundsN458105 lbs212 lbs317 lbs
66Chloroethane75-00-3284 lbs0 lbs284 lbs
67Mercury And Mercury CompoundsN45836 lbs195 lbs230 lbs
681,1,2,2-Tetrachloroethane79-34-5219 lbs0 lbs219 lbs
69Benzo[g,h,i]perylene191-24-296 lbs74 lbs170 lbs
70Cobalt compoundsN09633 lbs89 lbs122 lbs
71Barium And Barium CompoundsN0400 lbs99 lbs99 lbs
72Carbon disulfide75-15-084 lbs0 lbs84 lbs
73Chlorobenzene108-90-777 lbs0 lbs77 lbs
741,2-Dichloroethylene540-59-075 lbs0 lbs75 lbs
75NonylphenolN53061 lbs0 lbs61 lbs
76Chloroprene126-99-855 lbs0 lbs55 lbs
77Nitric acid7697-37-249 lbs0 lbs49 lbs
78Methyl acrylate96-33-347 lbs0 lbs47 lbs
79Ethylidene dichloride75-34-337 lbs0 lbs37 lbs
80Cobalt And Cobalt CompoundsN09612 lbs24 lbs36 lbs
81Ethyl acrylate140-88-535 lbs0 lbs35 lbs
82Triethylamine121-44-834 lbs0 lbs34 lbs
83Chromium7440-47-30 lbs33 lbs33 lbs
84Nickel7440-02-00 lbs31 lbs31 lbs
85Dioxin and dioxin-like compoundsN1508 lbs23 lbs31 lbs
86Carbon tetrachloride56-23-527 lbs0 lbs27 lbs
87Methyl methacrylate80-62-625 lbs0 lbs25 lbs
88Diphenylamine122-39-410 lbs14 lbs24 lbs
89Hexachloroethane67-72-116 lbs0 lbs16 lbs
90Vinylidene chloride75-35-415 lbs0 lbs15 lbs
91Boron trifluoride7637-07-211 lbs0 lbs11 lbs
92Propionaldehyde123-38-68 lbs0 lbs8 lbs
93trans-1,4-Dichloro-2-butene110-57-67 lbs0 lbs7 lbs
94Hexachlorobenzene118-74-15 lbs0 lbs5 lbs
95N-Methyl-2-pyrrolidone872-50-43 lbs0 lbs3 lbs
96Acetamide60-35-52 lbs0 lbs2 lbs

Top chemicals released near this property (2024 only):

Ethylene, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, 1,3-Butadiene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 78 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (78 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1439,952 lbs0 lbs439,952 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs204,942 lbs204,942 lbs
3Propylene115-07-1143,286 lbs0 lbs143,286 lbs
41,3-Butadiene106-99-0108,643 lbs9 lbs108,652 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-997,000 lbs0 lbs97,000 lbs
64,4'-Isopropylidenediphenol80-05-710,300 lbs0 lbs89,800 lbs
7Ammonia7664-41-744,983 lbs1,580 lbs54,278 lbs
8Cumene98-82-852,712 lbs31 lbs52,743 lbs
9Toluene108-88-350,315 lbs10 lbs51,765 lbs
10Methanol67-56-114,597 lbs27,174 lbs47,222 lbs
11Phenol108-95-240,343 lbs254 lbs42,761 lbs
12Benzene71-43-239,601 lbs7 lbs41,770 lbs
13Hydrogen sulfide7783-06-438,758 lbs289 lbs39,047 lbs
14Xylene (mixed isomers)1330-20-718,400 lbs10 lbs20,108 lbs
15Zinc compoundsN982442 lbs9,539 lbs16,180 lbs
16n-Hexane110-54-313,870 lbs10 lbs13,880 lbs
17Hydrogen cyanide74-90-813,000 lbs70 lbs13,070 lbs
18Diethanolamine111-42-23,059 lbs0 lbs12,859 lbs
19Lead compoundsN42093 lbs169 lbs12,855 lbs
20Epichlorohydrin106-89-812,291 lbs331 lbs12,622 lbs
21Nickel compoundsN4950 lbs218 lbs11,929 lbs
22Vinyl chloride75-01-411,013 lbs3 lbs11,016 lbs
23Dichloromethane75-09-29,911 lbs10 lbs9,922 lbs
24Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-09,252 lbs0 lbs9,252 lbs
251,2-Dichloroethane107-06-28,530 lbs0 lbs8,530 lbs
26Acetonitrile75-05-84,900 lbs3,100 lbs8,000 lbs
27Trade SecretTRD SECRT5,677 lbs0 lbs5,677 lbs
28Ethylbenzene100-41-44,620 lbs7 lbs5,262 lbs
29Sodium nitrite7632-00-00 lbs4,600 lbs4,600 lbs
30Naphthalene91-20-32,290 lbs22 lbs4,044 lbs
31Acetaldehyde75-07-03,861 lbs161 lbs4,022 lbs
32Polycyclic aromatic compoundsN59012 lbs14 lbs4,011 lbs
33Glycidol556-52-51,002 lbs2,400 lbs3,402 lbs
34sec-Butyl alcohol78-92-2540 lbs2,100 lbs2,640 lbs
35Isoprene78-79-52,360 lbs16 lbs2,376 lbs
36DiisocyanatesN1201,843 lbs0 lbs1,843 lbs
37Ethyl acrylate140-88-56 lbs0 lbs1,809 lbs
38Ethylene glycol107-21-11,527 lbs0 lbs1,527 lbs
39Styrene100-42-51,160 lbs2 lbs1,371 lbs
40Cyclohexane110-82-7858 lbs17 lbs875 lbs
41Maleic anhydride108-31-6701 lbs0 lbs701 lbs
42Acetophenone98-86-2188 lbs510 lbs698 lbs
43Butyl acrylate141-32-2597 lbs0 lbs597 lbs
441,2,4-Trimethylbenzene95-63-6546 lbs0 lbs546 lbs
45Dicyclopentadiene77-73-6493 lbs0 lbs503 lbs
46Manganese compoundsN45037 lbs350 lbs387 lbs
47Cumene hydroperoxide80-15-9384 lbs0 lbs384 lbs
48NonylphenolN5302 lbs0 lbs374 lbs
49Benzo[g,h,i]perylene191-24-20 lbs1 lbs372 lbs
50Chlorine7782-50-5311 lbs0 lbs311 lbs
51Tetrachloroethylene127-18-4282 lbs4 lbs286 lbs
521,1,2-Trichloroethane79-00-5166 lbs0 lbs166 lbs
53Acrylic acid79-10-7127 lbs0 lbs127 lbs
54Bis(2-chloroethyl) ether111-44-496 lbs0 lbs96 lbs
55Mercury compoundsN4580 lbs53 lbs54 lbs
56Dioxin and dioxin-like compoundsN1501 lbs0 lbs53 lbs
57Methyl isobutyl ketone108-10-10 lbs0 lbs44 lbs
58Chloroform67-66-344 lbs0 lbs44 lbs
59Trichloroethylene79-01-643 lbs0 lbs43 lbs
60Lead7439-92-10 lbs0 lbs38 lbs
61Pentachloroethane76-01-736 lbs0 lbs36 lbs
62Mercury And Mercury CompoundsN45817 lbs0 lbs32 lbs
631,1,2,2-Tetrachloroethane79-34-524 lbs0 lbs24 lbs
64Chloroethane75-00-321 lbs0 lbs21 lbs
65Chlorobenzene108-90-714 lbs0 lbs14 lbs
66Carbon disulfide75-15-012 lbs0 lbs12 lbs
67Nitric acid7697-37-211 lbs0 lbs11 lbs
68Chromium7440-47-30 lbs2 lbs8 lbs
69Phenanthrene85-01-86 lbs1 lbs7 lbs
70Nickel7440-02-00 lbs2 lbs6 lbs
711,2-Dichloroethylene540-59-05 lbs0 lbs5 lbs
72Carbon tetrachloride56-23-54 lbs0 lbs4 lbs
73Chloroprene126-99-83 lbs0 lbs3 lbs
74Hexachloroethane67-72-12 lbs0 lbs2 lbs
75Anthracene120-12-71 lbs1 lbs2 lbs
76Ethylidene dichloride75-34-31 lbs0 lbs1 lbs
77Propylene oxide75-56-91 lbs0 lbs1 lbs
78Hexachlorobenzene118-74-11 lbs0 lbs1 lbs

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