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
4900 N HIGHWAY 146 BAYTOWN 77520
Elevation
15.89 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
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 Safe
Safety Margin: 5.89 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
High
Higher pollution than 87% 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)
3.47 million lbs
Extremely High
531.8x more than typical Houston property
≈ 173 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)
813 thousand lbs
Extremely High
168.6x 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)
2.66 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)3,469,347 lbs813,239 lbs2,656,108 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)407,988 lbs82,677 lbs309,844 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 87% 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 15% most polluted).

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

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia, Methanol, Chlorobenzene, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 65 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (65 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,578,707 lbs2,578,707 lbs
2Ammonia7664-41-7322,325 lbs69,066 lbs391,391 lbs
3Methanol67-56-187,810 lbs0 lbs87,810 lbs
4Chlorobenzene108-90-747,896 lbs163 lbs48,059 lbs
5Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-043,030 lbs0 lbs43,030 lbs
6Formaldehyde50-00-037,620 lbs0 lbs37,620 lbs
7Nitric acid7697-37-235,727 lbs0 lbs35,727 lbs
8Styrene100-42-534,808 lbs0 lbs34,808 lbs
9Cyclohexane110-82-734,434 lbs0 lbs34,434 lbs
10Aniline62-53-334,371 lbs23 lbs34,394 lbs
11Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-919,732 lbs0 lbs19,732 lbs
12Dichloromethane75-09-218,502 lbs358 lbs18,860 lbs
13Toluene108-88-316,696 lbs21 lbs16,717 lbs
14Xylene (mixed isomers)1330-20-716,329 lbs0 lbs16,329 lbs
15Benzene71-43-212,354 lbs23 lbs12,377 lbs
16Chlorine7782-50-58,463 lbs0 lbs8,463 lbs
17Nitrobenzene98-95-38,265 lbs0 lbs8,265 lbs
18Maleic anhydride108-31-68,262 lbs0 lbs8,262 lbs
19Chloroform67-66-32,786 lbs3,031 lbs5,817 lbs
201,2-Dichlorobenzene95-50-14,717 lbs6 lbs4,723 lbs
21Phosgene75-44-54,151 lbs0 lbs4,151 lbs
22Dichlorobenzene (mixed isomers)25321-22-62,948 lbs2 lbs2,950 lbs
23Chlorodifluoromethane (HCFC-22)75-45-62,717 lbs0 lbs2,717 lbs
244,4'-Isopropylidenediphenol80-05-7187 lbs2,489 lbs2,676 lbs
25Dibutyl phthalate84-74-22,436 lbs0 lbs2,436 lbs
26Ethylbenzene100-41-42,093 lbs0 lbs2,093 lbs
27Nickel7440-02-00 lbs1,939 lbs1,939 lbs
28Carbon tetrachloride56-23-5599 lbs0 lbs599 lbs
29Phenol108-95-2449 lbs104 lbs553 lbs
30Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification)67-63-0529 lbs0 lbs529 lbs
31Methyl isobutyl ketone108-10-1422 lbs0 lbs422 lbs
32DiisocyanatesN120421 lbs0 lbs421 lbs
33Chloromethane74-87-3396 lbs0 lbs396 lbs
34n-Hexane110-54-3331 lbs0 lbs331 lbs
35Diaminotoluene (mixed isomers)25376-45-8269 lbs0 lbs269 lbs
36Dinitrotoluene (mixed isomers)25321-14-621 lbs167 lbs188 lbs
372,4-Diaminotoluene95-80-7156 lbs9 lbs165 lbs
38Methyl methacrylate80-62-6150 lbs0 lbs150 lbs
39Toluene diisocyanate (mixed isomers)26471-62-5141 lbs0 lbs141 lbs
40Formic acid64-18-699 lbs0 lbs99 lbs
414,4'-Methylenedianiline101-77-989 lbs0 lbs89 lbs
42Toluene-2,4-diisocyanate584-84-988 lbs0 lbs88 lbs
43Toluene-2,6-diisocyanate91-08-783 lbs0 lbs83 lbs
44Dimethylamine124-40-365 lbs0 lbs65 lbs
45Carbon disulfide75-15-042 lbs0 lbs42 lbs
461,2,4-Trimethylbenzene95-63-638 lbs0 lbs38 lbs
47Methyl acrylate96-33-327 lbs0 lbs27 lbs
48Certain glycol ethersN23026 lbs0 lbs26 lbs
49Allyl chloride107-05-126 lbs0 lbs26 lbs
50Triethylamine121-44-819 lbs0 lbs19 lbs
51Acrylic acid79-10-719 lbs0 lbs19 lbs
52N,N-Dimethylformamide68-12-215 lbs0 lbs15 lbs
53Vinyl acetate108-05-414 lbs0 lbs14 lbs
54o-Toluidine95-53-412 lbs0 lbs12 lbs
551,4-Dichlorobenzene106-46-712 lbs0 lbs12 lbs
56Butyl acrylate141-32-26 lbs0 lbs6 lbs
57Ethylene glycol107-21-14 lbs0 lbs4 lbs
58m-Cresol108-39-43 lbs0 lbs3 lbs
59Benzyl chloride100-44-72 lbs0 lbs2 lbs
60Lead7439-92-11 lbs0 lbs1 lbs
61Diethanolamine111-42-21 lbs0 lbs1 lbs
624-Aminobiphenyl92-67-11 lbs0 lbs1 lbs
63Nickel compoundsN4951 lbs0 lbs1 lbs
64Copper compoundsN1001 lbs0 lbs1 lbs
65Zinc compoundsN9821 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia, Acrylic acid, Methanol, Chlorobenzene

View the full list of 43 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (43 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs308,727 lbs308,727 lbs
2Ammonia7664-41-732,729 lbs0 lbs32,729 lbs
3Acrylic acid79-10-72 lbs0 lbs11,602 lbs
4Methanol67-56-110,098 lbs0 lbs10,098 lbs
5Chlorobenzene108-90-75,807 lbs14 lbs5,821 lbs
6Aniline62-53-34,471 lbs0 lbs4,471 lbs
7Styrene100-42-53,715 lbs0 lbs3,715 lbs
8Dichloromethane75-09-23,434 lbs53 lbs3,487 lbs
9Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-03,456 lbs0 lbs3,456 lbs
10Nitric acid7697-37-23,243 lbs0 lbs3,243 lbs
11Formaldehyde50-00-03,232 lbs0 lbs3,232 lbs
12N-Hydroxyethylethylenediamine111-41-10 lbs0 lbs2,667 lbs
13Cyclohexane110-82-72,505 lbs0 lbs2,505 lbs
14Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-92,329 lbs0 lbs2,329 lbs
15Xylene (mixed isomers)1330-20-71,915 lbs0 lbs1,915 lbs
16Toluene108-88-31,846 lbs0 lbs1,846 lbs
17Methyl acrylate96-33-32 lbs0 lbs1,202 lbs
18Chlorine7782-50-5797 lbs0 lbs797 lbs
19Nickel7440-02-00 lbs605 lbs605 lbs
20Nitrobenzene98-95-3566 lbs0 lbs566 lbs
21Benzene71-43-2489 lbs0 lbs489 lbs
22Ethylbenzene100-41-4382 lbs0 lbs382 lbs
23Chloroform67-66-390 lbs268 lbs358 lbs
24Maleic anhydride108-31-6340 lbs0 lbs340 lbs
25Dichlorobenzene (mixed isomers)25321-22-6275 lbs0 lbs275 lbs
26Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification)67-63-0267 lbs0 lbs267 lbs
271,2-Dichlorobenzene95-50-1232 lbs0 lbs232 lbs
28Chloromethane74-87-3200 lbs0 lbs200 lbs
294,4'-Isopropylidenediphenol80-05-711 lbs174 lbs185 lbs
30Phosgene75-44-5107 lbs0 lbs107 lbs
31n-Hexane110-54-329 lbs0 lbs29 lbs
322,4-Diaminotoluene95-80-722 lbs0 lbs22 lbs
33Phenol108-95-216 lbs3 lbs19 lbs
34Toluene-2,4-diisocyanate584-84-916 lbs0 lbs16 lbs
35Toluene diisocyanate (mixed isomers)26471-62-513 lbs0 lbs13 lbs
361,2,4-Trimethylbenzene95-63-611 lbs0 lbs11 lbs
37Toluene-2,6-diisocyanate91-08-79 lbs0 lbs9 lbs
381,4-Dichlorobenzene106-46-78 lbs0 lbs8 lbs
39DiisocyanatesN1205 lbs0 lbs5 lbs
40Diaminotoluene (mixed isomers)25376-45-83 lbs0 lbs3 lbs
41Dinitrotoluene (mixed isomers)25321-14-63 lbs0 lbs3 lbs
42Dibutyl phthalate84-74-22 lbs0 lbs2 lbs
43Ethylene glycol107-21-11 lbs0 lbs1 lbs

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