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
16530 DE ZAVALLA RD CHANNELVIEW 77530
Elevation
5.27 ft
Height above sea level from USGS data.
FEMA Flood Zone
VE
Unknown
Overall Risk
High
Property flooded at 4.7ft depth. Risk based on flood depth at structure.

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
High
Flood Depth
4.73 ft ±0.5 ft
Depth of water above ground 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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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 Flooded
Flood Depth: 4.73 feet
Severity: Moderate

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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • 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.
  • Simulation shows flooding at current water level - review property drainage and consider mitigation.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 79% 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)
705 thousand lbs
Extremely High
108.0x more than typical Houston property
≈ 35 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)
699 thousand lbs
Extremely High
144.9x 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 thousand lbs
Very 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)704,501 lbs698,766 lbs5,735 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)14,412,089 lbs54,207 lbs445 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 79% 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 25% most polluted).

Top chemicals released near this property (past 10 years):

N-Methyl-2-pyrrolidone, Methanol, Cyanide compounds, Chlorothalonil, Zinc compounds

View the full list of 108 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (108 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1N-Methyl-2-pyrrolidone872-50-4113 lbs0 lbs20,671,527 lbs
2Methanol67-56-111,454 lbs308 lbs19,270,603 lbs
3Cyanide compoundsN1060 lbs0 lbs16,901,439 lbs
4Chlorothalonil1897-45-60 lbs0 lbs8,991,775 lbs
5Zinc compoundsN9820 lbs70 lbs8,640,619 lbs
6Diethanolamine111-42-20 lbs0 lbs5,601,302 lbs
7Certain glycol ethersN23036,371 lbs0 lbs5,107,233 lbs
8tert-Butyl alcohol75-65-016,246 lbs1,309 lbs3,818,104 lbs
9Nitric acid7697-37-217 lbs0 lbs3,486,797 lbs
10Ethylene glycol107-21-1582 lbs0 lbs3,383,666 lbs
11Cresol (mixed isomers)1319-77-30 lbs0 lbs3,372,648 lbs
12Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs3,070,942 lbs
13Xylene (mixed isomers)1330-20-772,123 lbs17 lbs2,884,889 lbs
14Ammonia7664-41-7935 lbs51 lbs2,752,770 lbs
15Naphthalene91-20-324,189 lbs1 lbs1,891,706 lbs
16Nickel compoundsN4950 lbs0 lbs1,581,512 lbs
17Toluene108-88-317,535 lbs92 lbs1,374,607 lbs
18Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901,236 lbs41 lbs1,241,589 lbs
19Benzene71-43-287,913 lbs84 lbs1,071,993 lbs
201,4-Dioxane123-91-1239 lbs0 lbs1,067,390 lbs
21Ethylbenzene100-41-412,814 lbs4 lbs931,048 lbs
22Nickel7440-02-0421 lbs110 lbs831,068 lbs
23Isobutyraldehyde78-84-227,900 lbs0 lbs813,735 lbs
24Formic acid64-18-6121 lbs0 lbs705,935 lbs
25Dimethylamine124-40-31,107 lbs0 lbs566,717 lbs
26Maleic anhydride108-31-64 lbs0 lbs542,229 lbs
27n-Butyl alcohol71-36-367,232 lbs6 lbs524,477 lbs
28n-Hexane110-54-319,925 lbs0 lbs501,406 lbs
291,2,4-Trimethylbenzene95-63-6132,452 lbs2 lbs480,264 lbs
30Dinitrobutyl phenol88-85-73 lbs0 lbs476,094 lbs
31Dicyclopentadiene77-73-6399 lbs0 lbs449,596 lbs
32Formaldehyde50-00-05 lbs0 lbs333,384 lbs
331,2-Dichloroethane107-06-2615 lbs0 lbs289,538 lbs
34Methyl tert-butyl ether1634-04-445,548 lbs263 lbs285,514 lbs
35Acrylic acid79-10-77 lbs0 lbs248,410 lbs
36Phthalic anhydride85-44-92 lbs0 lbs248,323 lbs
37Chromium7440-47-32,629 lbs103 lbs231,520 lbs
38Propionaldehyde123-38-61,109 lbs0 lbs214,248 lbs
39Cyclohexane110-82-75,798 lbs7 lbs198,163 lbs
40Sodium nitrite7632-00-00 lbs0 lbs182,069 lbs
41Biphenyl92-52-43 lbs0 lbs173,908 lbs
42Cadmium7440-43-90 lbs0 lbs158,480 lbs
43Lead7439-92-10 lbs1 lbs153,285 lbs
44Toluene diisocyanate (mixed isomers)26471-62-58 lbs0 lbs153,072 lbs
45Copper7440-50-815 lbs45 lbs147,397 lbs
462-Methyllactonitrile75-86-51 lbs0 lbs147,141 lbs
47Methyl methacrylate80-62-6250 lbs0 lbs146,091 lbs
48Epichlorohydrin106-89-826 lbs0 lbs141,502 lbs
49Butyl acrylate141-32-20 lbs0 lbs139,195 lbs
50Methyl isobutyl ketone108-10-159,193 lbs3,068 lbs129,351 lbs
51Aniline62-53-34 lbs0 lbs114,014 lbs
52Methyl parathion298-00-04 lbs0 lbs94,285 lbs
53Acetonitrile75-05-818 lbs0 lbs91,519 lbs
54Dimethyl phthalate131-11-36 lbs0 lbs85,884 lbs
551,2-Dichlorobenzene95-50-16 lbs0 lbs85,759 lbs
56o-Xylene95-47-61 lbs0 lbs85,181 lbs
57Styrene100-42-518,422 lbs0 lbs78,273 lbs
58N,N-Dimethylformamide68-12-21 lbs0 lbs76,335 lbs
59Triethylamine121-44-823 lbs0 lbs74,048 lbs
60Dichloromethane75-09-2178 lbs0 lbs63,940 lbs
61Chloroform67-66-3626 lbs0 lbs59,775 lbs
62Cumene98-82-814 lbs0 lbs58,911 lbs
63Phenol108-95-23 lbs0 lbs54,635 lbs
64Cyclohexanol108-93-00 lbs0 lbs54,237 lbs
65Isoprene78-79-567 lbs0 lbs44,716 lbs
66Propylene oxide75-56-9672 lbs0 lbs39,810 lbs
672,4-Dichlorophenol120-83-20 lbs0 lbs37,482 lbs
68Hydrogen sulfide7783-06-4727 lbs0 lbs34,654 lbs
69Vinyl acetate108-05-416,160 lbs87 lbs30,333 lbs
70p-Xylene106-42-30 lbs0 lbs28,776 lbs
711,3-Butadiene106-99-012,801 lbs0 lbs24,455 lbs
72Hydrogen fluoride7664-39-30 lbs0 lbs21,273 lbs
73Ethylene oxide75-21-81 lbs0 lbs20,571 lbs
74Lead compoundsN42025 lbs4 lbs18,745 lbs
75Thiourea62-56-60 lbs0 lbs18,707 lbs
76Hexafluoropropylene oxide dimer acid13252-13-60 lbs0 lbs16,482 lbs
77m-Xylene108-38-30 lbs0 lbs16,468 lbs
78Allyl alcohol107-18-66 lbs0 lbs13,310 lbs
79Chlorine7782-50-50 lbs0 lbs12,832 lbs
80Metham sodium137-42-80 lbs0 lbs11,840 lbs
81Molybdenum trioxide1313-27-50 lbs0 lbs10,940 lbs
822-Nitropropane79-46-90 lbs0 lbs10,750 lbs
83Vanadium compoundsN7700 lbs0 lbs9,496 lbs
84Hexafluoropropylene oxide dimer acid ammonium salt62037-80-30 lbs0 lbs8,316 lbs
85Selenium7782-49-20 lbs0 lbs6,698 lbs
86Selenium compoundsN7250 lbs0 lbs5,163 lbs
87Perfluorooctanoic acid335-67-10 lbs0 lbs1,543 lbs
88Ethyl acrylate140-88-5728 lbs0 lbs728 lbs
89Propylene115-07-1704 lbs0 lbs704 lbs
90Acetaldehyde75-07-0333 lbs0 lbs333 lbs
91Polycyclic aromatic compoundsN5901 lbs0 lbs316 lbs
92Mercury7439-97-60 lbs0 lbs296 lbs
93Mercury compoundsN4580 lbs0 lbs273 lbs
94Antimony compoundsN010235 lbs0 lbs235 lbs
95Butyraldehyde123-72-8218 lbs0 lbs218 lbs
96Toxaphene8001-35-20 lbs0 lbs217 lbs
97Chlordane57-74-90 lbs0 lbs216 lbs
98Trifluralin1582-09-80 lbs0 lbs215 lbs
99Heptachlor76-44-80 lbs0 lbs215 lbs
100Pentachlorobenzene608-93-50 lbs0 lbs142 lbs
101Ethylene74-85-196 lbs0 lbs96 lbs
102Manganese7439-96-559 lbs22 lbs81 lbs
103sec-Butyl alcohol78-92-255 lbs0 lbs55 lbs
104Hexachlorobenzene118-74-10 lbs0 lbs50 lbs
105Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs40 lbs40 lbs
1062-Methoxyethanol109-86-413 lbs0 lbs13 lbs
107Trichloroethylene79-01-610 lbs0 lbs10 lbs
108Tetrachloroethylene127-18-410 lbs0 lbs10 lbs

Top chemicals released near this property (2024 only):

Methanol, N-Methyl-2-pyrrolidone, Cyanide compounds, Diethanolamine, Nickel compounds

View the full list of 74 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (74 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-1115 lbs0 lbs3,287,542 lbs
2N-Methyl-2-pyrrolidone872-50-40 lbs0 lbs1,988,560 lbs
3Cyanide compoundsN1060 lbs0 lbs1,464,969 lbs
4Diethanolamine111-42-20 lbs0 lbs1,133,394 lbs
5Nickel compoundsN4950 lbs0 lbs1,111,378 lbs
6Zinc compoundsN9820 lbs0 lbs1,056,788 lbs
7Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs0 lbs598,088 lbs
8Ammonia7664-41-70 lbs1 lbs451,172 lbs
9Ethylene glycol107-21-10 lbs0 lbs390,109 lbs
10Isobutyraldehyde78-84-22,245 lbs0 lbs352,719 lbs
11Nitric acid7697-37-20 lbs0 lbs290,885 lbs
12Certain glycol ethersN2302,726 lbs0 lbs254,437 lbs
13Toluene108-88-32,189 lbs0 lbs195,946 lbs
14Naphthalene91-20-32,622 lbs0 lbs175,139 lbs
15Xylene (mixed isomers)1330-20-76,575 lbs0 lbs162,880 lbs
16Benzene71-43-22,068 lbs0 lbs111,506 lbs
17Nickel7440-02-036 lbs20 lbs93,483 lbs
181,2-Dichloroethane107-06-20 lbs0 lbs82,523 lbs
19n-Butyl alcohol71-36-39,733 lbs0 lbs79,925 lbs
20Styrene100-42-530 lbs0 lbs78,726 lbs
21Formic acid64-18-60 lbs0 lbs67,898 lbs
22n-Hexane110-54-33,724 lbs0 lbs67,430 lbs
23Dinitrobutyl phenol88-85-70 lbs0 lbs65,769 lbs
24Ethylbenzene100-41-41,591 lbs0 lbs62,440 lbs
25Chromium compounds (except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs62,222 lbs
26tert-Butyl alcohol75-65-01,168 lbs273 lbs59,589 lbs
27Maleic anhydride108-31-60 lbs0 lbs52,323 lbs
28o-Xylene95-47-60 lbs0 lbs50,147 lbs
29Triethylamine121-44-80 lbs0 lbs39,898 lbs
30Dicyclopentadiene77-73-637 lbs0 lbs37,215 lbs
31Dimethylamine124-40-30 lbs0 lbs33,746 lbs
32Acrylic acid79-10-70 lbs0 lbs31,093 lbs
331,4-Dioxane123-91-10 lbs0 lbs29,388 lbs
34p-Xylene106-42-30 lbs0 lbs28,776 lbs
35Propionaldehyde123-38-60 lbs0 lbs27,661 lbs
36Chromium7440-47-3136 lbs32 lbs24,771 lbs
371,2,4-Trimethylbenzene95-63-67,218 lbs0 lbs24,342 lbs
382-Methyllactonitrile75-86-50 lbs0 lbs22,681 lbs
39Acetonitrile75-05-80 lbs0 lbs22,453 lbs
40Phthalic anhydride85-44-90 lbs0 lbs22,047 lbs
41Butyl acrylate141-32-20 lbs0 lbs21,997 lbs
42Hydrogen fluoride7664-39-30 lbs0 lbs21,273 lbs
43Dichloromethane75-09-20 lbs0 lbs17,569 lbs
44Vinyl acetate108-05-43,246 lbs0 lbs17,332 lbs
45m-Xylene108-38-30 lbs0 lbs16,468 lbs
46Methyl isobutyl ketone108-10-11,559 lbs52 lbs15,947 lbs
47Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs11 lbs15,941 lbs
48Formaldehyde50-00-00 lbs0 lbs15,487 lbs
49Aniline62-53-30 lbs0 lbs13,759 lbs
50DiisocyanatesN1200 lbs0 lbs12,180 lbs
51Dimethyl phthalate131-11-30 lbs0 lbs7,416 lbs
521,2-Dichlorobenzene95-50-10 lbs0 lbs7,230 lbs
53Hexafluoropropylene oxide dimer acid ammonium salt62037-80-30 lbs0 lbs5,728 lbs
54Methyl tert-butyl ether1634-04-45,649 lbs56 lbs5,705 lbs
55Vanadium compoundsN7700 lbs0 lbs5,467 lbs
56Hexafluoropropylene oxide dimer acid13252-13-60 lbs0 lbs4,402 lbs
57Lead compoundsN4200 lbs0 lbs4,131 lbs
58Methyl methacrylate80-62-61 lbs0 lbs3,658 lbs
59Epichlorohydrin106-89-80 lbs0 lbs2,400 lbs
60Lead7439-92-10 lbs0 lbs1,726 lbs
61Perfluorooctanoic acid335-67-10 lbs0 lbs1,181 lbs
62Cyclohexane110-82-7935 lbs0 lbs935 lbs
631,3-Butadiene106-99-0433 lbs0 lbs433 lbs
64Mercury compoundsN4580 lbs0 lbs273 lbs
65Mercury7439-97-60 lbs0 lbs222 lbs
66Toxaphene8001-35-20 lbs0 lbs217 lbs
67Chlordane57-74-90 lbs0 lbs216 lbs
68Heptachlor76-44-80 lbs0 lbs215 lbs
69Trifluralin1582-09-80 lbs0 lbs215 lbs
70Ethyl acrylate140-88-5117 lbs0 lbs117 lbs
71Polycyclic aromatic compoundsN5900 lbs0 lbs114 lbs
72sec-Butyl alcohol78-92-255 lbs0 lbs55 lbs
73Pentachlorobenzene608-93-50 lbs0 lbs16 lbs
74Lead And Lead CompoundsN4200 lbs0 lbs7 lbs

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