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
236 DELTA ST PASADENA 77506
Building Size
1,488 sqft
Total structure area from HCAD building records.
Elevation
26.85 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: 16.85 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 88% 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)
4.11 million lbs
Extremely High
629.5x more than typical Houston property
≈ 205 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)
4.1 million lbs
Extremely High
850.1x 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)4,106,775 lbs4,099,291 lbs7,483 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)248,231 lbs198,593 lbs509 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 88% 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, Propylene, Methanol, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 51 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (51 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,138,404 lbs0 lbs1,138,404 lbs
2n-Hexane110-54-31,048,788 lbs170 lbs1,049,371 lbs
3Propylene115-07-1271,630 lbs0 lbs271,630 lbs
4Methanol67-56-1268,262 lbs0 lbs268,262 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9250,209 lbs0 lbs250,209 lbs
6Hydrogen cyanide74-90-8213,734 lbs0 lbs213,734 lbs
7Xylene (mixed isomers)1330-20-7208,704 lbs129 lbs211,171 lbs
8Toluene108-88-3160,136 lbs43 lbs161,046 lbs
9Ammonia7664-41-7115,868 lbs0 lbs115,868 lbs
10Benzene71-43-286,351 lbs44 lbs86,950 lbs
11Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
121,2,4-Trimethylbenzene95-63-647,768 lbs105 lbs48,136 lbs
13Ethylbenzene100-41-438,993 lbs61 lbs39,648 lbs
14Hydrogen sulfide7783-06-437,772 lbs0 lbs37,773 lbs
151,3-Butadiene106-99-029,382 lbs0 lbs29,383 lbs
16Naphthalene91-20-316,264 lbs21 lbs17,608 lbs
17Cyclohexane110-82-715,071 lbs0 lbs15,830 lbs
18Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
19Zinc compoundsN9827,485 lbs6,851 lbs14,336 lbs
20Cumene98-82-89,062 lbs10 lbs9,255 lbs
21Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
22Chlorine7782-50-56,745 lbs0 lbs6,745 lbs
23Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
24Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-05,281 lbs0 lbs5,281 lbs
25Phenol108-95-25,163 lbs0 lbs5,163 lbs
26Biphenyl92-52-44,816 lbs0 lbs5,138 lbs
27Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
28Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
29o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
30Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
31Formic acid64-18-61,406 lbs0 lbs1,406 lbs
32Manganese compoundsN4501,064 lbs0 lbs1,064 lbs
33Maleic anhydride108-31-61,046 lbs0 lbs1,046 lbs
34Lead compoundsN420288 lbs22 lbs309 lbs
35Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
36Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
37Ethylene glycol107-21-1299 lbs0 lbs299 lbs
381,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
391,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
40Diphenylamine122-39-4126 lbs0 lbs126 lbs
41Nickel7440-02-0120 lbs0 lbs120 lbs
42Lead And Lead CompoundsN42055 lbs22 lbs78 lbs
43Manganese7439-96-570 lbs0 lbs70 lbs
44Chromium7440-47-340 lbs0 lbs40 lbs
45Mercury7439-97-630 lbs0 lbs30 lbs
46Polycyclic aromatic compoundsN59024 lbs2 lbs26 lbs
47Certain glycol ethersN23012 lbs0 lbs12 lbs
48Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
49Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
50Benzo[g,h,i]perylene191-24-23 lbs0 lbs3 lbs
51Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Methanol, n-Hexane, Zinc compounds, Xylene (mixed isomers)

View the full list of 41 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (41 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1115,179 lbs0 lbs115,179 lbs
2Methanol67-56-115,808 lbs0 lbs42,599 lbs
3n-Hexane110-54-315,513 lbs0 lbs15,552 lbs
4Zinc compoundsN982678 lbs476 lbs9,871 lbs
5Xylene (mixed isomers)1330-20-78,835 lbs15 lbs9,294 lbs
6Ammonia7664-41-77,948 lbs0 lbs8,735 lbs
7Toluene108-88-36,323 lbs5 lbs8,220 lbs
81,2,4-Trimethylbenzene95-63-65,040 lbs0 lbs5,877 lbs
9Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
10Benzene71-43-24,302 lbs4 lbs4,399 lbs
11Phenol108-95-22,206 lbs0 lbs3,579 lbs
12Formaldehyde50-00-0354 lbs0 lbs3,326 lbs
13Formic acid64-18-6189 lbs0 lbs1,968 lbs
14Ethylbenzene100-41-41,688 lbs7 lbs1,733 lbs
151,3-Butadiene106-99-01,251 lbs0 lbs1,251 lbs
16Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
17o-Cresol95-48-788 lbs0 lbs1,122 lbs
18Propylene115-07-11,119 lbs0 lbs1,119 lbs
19Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
20Hydrogen sulfide7783-06-4923 lbs0 lbs923 lbs
21Dimethylamine124-40-3864 lbs0 lbs884 lbs
22Naphthalene91-20-3728 lbs1 lbs747 lbs
23Cumene98-82-8446 lbs0 lbs587 lbs
24Chlorine7782-50-5512 lbs0 lbs512 lbs
25Lead And Lead CompoundsN4208 lbs1 lbs460 lbs
26Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
27Cyclohexane110-82-7355 lbs0 lbs373 lbs
28Acrylonitrile107-13-1278 lbs0 lbs294 lbs
29Maleic anhydride108-31-6132 lbs0 lbs281 lbs
30Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
31Propylene oxide75-56-9255 lbs0 lbs255 lbs
32Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
33Ethylene glycol107-21-130 lbs0 lbs50 lbs
34Acetaldehyde75-07-045 lbs0 lbs45 lbs
35Manganese7439-96-530 lbs0 lbs30 lbs
36Chromium7440-47-325 lbs0 lbs25 lbs
37Nickel7440-02-024 lbs0 lbs24 lbs
38Diphenylamine122-39-423 lbs0 lbs23 lbs
391,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
40Certain glycol ethersN2301 lbs0 lbs1 lbs
41Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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