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
302 DELTA ST PASADENA 77506
Building Size
1,204 sqft
Total structure area from HCAD building records.
Elevation
26.92 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: 16.92 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 85% 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)
2.13 million lbs
Extremely High
327.2x more than typical Houston property
≈ 107 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)
2.13 million lbs
Extremely High
441.1x 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)
7 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)2,134,510 lbs2,127,132 lbs7,378 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)224,837 lbs176,318 lbs496 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 85% 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):

Ethylene, n-Hexane, Methanol, Ammonia, Vinyl acetate

View the full list of 44 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (44 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,059,949 lbs0 lbs1,059,949 lbs
2n-Hexane110-54-3403,294 lbs170 lbs403,465 lbs
3Methanol67-56-1268,262 lbs0 lbs268,262 lbs
4Ammonia7664-41-792,863 lbs0 lbs92,863 lbs
5Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
6Toluene108-88-353,613 lbs27 lbs53,649 lbs
7Xylene (mixed isomers)1330-20-748,626 lbs33 lbs48,668 lbs
81,2,4-Trimethylbenzene95-63-640,441 lbs105 lbs40,549 lbs
9Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
10Zinc compoundsN9827,485 lbs6,851 lbs14,336 lbs
11Benzene71-43-211,221 lbs24 lbs11,247 lbs
12Ethylbenzene100-41-46,973 lbs22 lbs6,997 lbs
13Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
14Chlorine7782-50-56,477 lbs0 lbs6,477 lbs
15Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
16Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-05,281 lbs0 lbs5,281 lbs
17Phenol108-95-25,163 lbs0 lbs5,163 lbs
18Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
19Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
20o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
21Cumene98-82-81,949 lbs10 lbs1,960 lbs
22Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
23Formic acid64-18-61,406 lbs0 lbs1,406 lbs
24Manganese compoundsN4501,064 lbs0 lbs1,064 lbs
25Maleic anhydride108-31-61,046 lbs0 lbs1,046 lbs
26Naphthalene91-20-31,012 lbs21 lbs1,034 lbs
27Cyclohexane110-82-7995 lbs0 lbs995 lbs
281,3-Butadiene106-99-0312 lbs0 lbs312 lbs
29Lead compoundsN420288 lbs22 lbs309 lbs
30Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
31Ethylene glycol107-21-1299 lbs0 lbs299 lbs
32Nickel7440-02-0120 lbs31 lbs151 lbs
331,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
341,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
35Diphenylamine122-39-4126 lbs0 lbs126 lbs
36Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
37Lead And Lead CompoundsN42055 lbs22 lbs78 lbs
38Chromium7440-47-340 lbs33 lbs73 lbs
39Manganese7439-96-570 lbs0 lbs70 lbs
40Certain glycol ethersN23012 lbs0 lbs12 lbs
41Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
42Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
43Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
44Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Methanol, n-Hexane, Zinc compounds, Ammonia

View the full list of 39 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (39 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1114,658 lbs0 lbs114,658 lbs
2Methanol67-56-115,808 lbs0 lbs42,599 lbs
3n-Hexane110-54-312,725 lbs0 lbs12,731 lbs
4Zinc compoundsN982678 lbs476 lbs9,871 lbs
5Ammonia7664-41-76,678 lbs0 lbs7,432 lbs
6Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
7Toluene108-88-33,102 lbs3 lbs4,948 lbs
81,2,4-Trimethylbenzene95-63-64,078 lbs0 lbs4,777 lbs
9Xylene (mixed isomers)1330-20-73,736 lbs5 lbs3,880 lbs
10Phenol108-95-22,206 lbs0 lbs3,579 lbs
11Formaldehyde50-00-0354 lbs0 lbs3,326 lbs
12Formic acid64-18-6189 lbs0 lbs1,968 lbs
13Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
14Benzene71-43-21,130 lbs2 lbs1,132 lbs
15o-Cresol95-48-788 lbs0 lbs1,122 lbs
16Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
17Dimethylamine124-40-3864 lbs0 lbs884 lbs
18Chlorine7782-50-5487 lbs0 lbs487 lbs
19Ethylbenzene100-41-4427 lbs3 lbs430 lbs
20Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
21Cumene98-82-8208 lbs0 lbs348 lbs
221,3-Butadiene106-99-0295 lbs0 lbs295 lbs
23Acrylonitrile107-13-1278 lbs0 lbs294 lbs
24Maleic anhydride108-31-6132 lbs0 lbs281 lbs
25Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
26Propylene oxide75-56-9255 lbs0 lbs255 lbs
27Cyclohexane110-82-7232 lbs0 lbs232 lbs
28Naphthalene91-20-3132 lbs1 lbs133 lbs
29Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
30Lead And Lead CompoundsN4208 lbs1 lbs70 lbs
31Ethylene glycol107-21-130 lbs0 lbs50 lbs
32Acetaldehyde75-07-045 lbs0 lbs45 lbs
33Chromium7440-47-325 lbs2 lbs33 lbs
34Nickel7440-02-024 lbs2 lbs30 lbs
35Manganese7439-96-530 lbs0 lbs30 lbs
36Diphenylamine122-39-423 lbs0 lbs23 lbs
371,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
38Certain glycol ethersN2301 lbs0 lbs1 lbs
39Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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