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
400 JEFFERSON RD PASADENA 77506
Elevation
25.92 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
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: 15.92 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 89% 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)
6.01 million lbs
Extremely High
920.4x more than typical Houston property
≈ 300 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)
5.96 million lbs
Extremely High
1236.8x 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)
41 thousand 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)6,005,145 lbs5,964,074 lbs41,071 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)477,352 lbs394,066 lbs602 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 89% 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, Ammonia, Propylene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 54 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (54 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,139,093 lbs0 lbs1,139,093 lbs
2n-Hexane110-54-31,058,386 lbs170 lbs1,058,969 lbs
3Ammonia7664-41-7763,546 lbs33,581 lbs797,127 lbs
4Propylene115-07-1532,636 lbs0 lbs532,636 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9528,487 lbs0 lbs528,487 lbs
6Cumene98-82-8442,438 lbs10 lbs442,631 lbs
7Methanol67-56-1268,262 lbs0 lbs268,262 lbs
8Benzene71-43-2246,815 lbs47 lbs247,417 lbs
9Hydrogen cyanide74-90-8213,734 lbs0 lbs213,734 lbs
10Xylene (mixed isomers)1330-20-7208,704 lbs129 lbs211,171 lbs
11Toluene108-88-3181,822 lbs43 lbs182,732 lbs
12Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
131,2,4-Trimethylbenzene95-63-647,768 lbs105 lbs48,136 lbs
14Ethylbenzene100-41-438,993 lbs61 lbs39,648 lbs
15Hydrogen sulfide7783-06-437,772 lbs0 lbs37,773 lbs
16Certain glycol ethersN23037,184 lbs0 lbs37,184 lbs
171,3-Butadiene106-99-029,382 lbs0 lbs29,383 lbs
18Naphthalene91-20-316,264 lbs21 lbs17,608 lbs
19Cyclohexane110-82-715,149 lbs0 lbs15,908 lbs
20Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
21Zinc compoundsN9827,485 lbs6,851 lbs14,336 lbs
22Phenol108-95-213,534 lbs4 lbs13,538 lbs
23Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
24Chlorine7782-50-56,750 lbs0 lbs6,750 lbs
25Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
26Ethylene glycol107-21-15,554 lbs0 lbs5,554 lbs
27Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-05,281 lbs0 lbs5,281 lbs
28Biphenyl92-52-44,816 lbs0 lbs5,138 lbs
29Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
30Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
31o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
32Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
33Formic acid64-18-61,406 lbs0 lbs1,406 lbs
34Manganese compoundsN4501,064 lbs0 lbs1,064 lbs
35Maleic anhydride108-31-61,046 lbs0 lbs1,046 lbs
36Diethanolamine111-42-2600 lbs0 lbs600 lbs
37Aluminum (fume or dust)7429-90-5487 lbs0 lbs487 lbs
38Lead compoundsN420288 lbs22 lbs309 lbs
39Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
40Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
411,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
421,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
43Diphenylamine122-39-4126 lbs0 lbs126 lbs
44Nickel7440-02-0120 lbs0 lbs120 lbs
45Lead And Lead CompoundsN42055 lbs22 lbs78 lbs
46Manganese7439-96-570 lbs0 lbs70 lbs
47C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
48Chromium7440-47-340 lbs0 lbs40 lbs
49Mercury7439-97-630 lbs0 lbs30 lbs
50Polycyclic aromatic compoundsN59024 lbs2 lbs26 lbs
51Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
52Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
53Benzo[g,h,i]perylene191-24-23 lbs0 lbs3 lbs
54Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Ammonia, Propylene, Methanol, Cumene

View the full list of 45 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (45 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1115,868 lbs0 lbs115,868 lbs
2Ammonia7664-41-782,811 lbs93 lbs110,349 lbs
3Propylene115-07-154,700 lbs0 lbs54,700 lbs
4Methanol67-56-115,808 lbs0 lbs42,599 lbs
5Cumene98-82-828,248 lbs0 lbs28,389 lbs
6Benzene71-43-222,702 lbs4 lbs22,800 lbs
7Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,341 lbs0 lbs17,341 lbs
8n-Hexane110-54-315,513 lbs0 lbs15,552 lbs
9Zinc compoundsN982678 lbs476 lbs9,871 lbs
10Xylene (mixed isomers)1330-20-78,835 lbs15 lbs9,294 lbs
11Toluene108-88-36,323 lbs5 lbs8,220 lbs
12Vanadium compoundsN7700 lbs0 lbs6,689 lbs
13Phenol108-95-24,579 lbs0 lbs5,952 lbs
141,2,4-Trimethylbenzene95-63-65,040 lbs0 lbs5,877 lbs
15Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
16Formaldehyde50-00-0354 lbs0 lbs3,326 lbs
17Formic acid64-18-6189 lbs0 lbs1,968 lbs
18Ethylbenzene100-41-41,688 lbs7 lbs1,733 lbs
191,3-Butadiene106-99-01,251 lbs0 lbs1,251 lbs
20Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
21o-Cresol95-48-788 lbs0 lbs1,122 lbs
22Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
23Hydrogen sulfide7783-06-4923 lbs0 lbs923 lbs
24Dimethylamine124-40-3864 lbs0 lbs884 lbs
25Naphthalene91-20-3728 lbs1 lbs747 lbs
26Ethylene glycol107-21-1530 lbs0 lbs550 lbs
27Chlorine7782-50-5512 lbs0 lbs512 lbs
28Lead And Lead CompoundsN4208 lbs1 lbs460 lbs
29Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
30Cyclohexane110-82-7355 lbs0 lbs373 lbs
31Acrylonitrile107-13-1278 lbs0 lbs294 lbs
32Maleic anhydride108-31-6132 lbs0 lbs281 lbs
33Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
34Propylene oxide75-56-9255 lbs0 lbs255 lbs
35Lead compoundsN4200 lbs0 lbs161 lbs
36Mercury compoundsN4580 lbs0 lbs46 lbs
37Acetaldehyde75-07-045 lbs0 lbs45 lbs
38Manganese7439-96-530 lbs0 lbs30 lbs
39Chromium7440-47-325 lbs0 lbs25 lbs
40Nickel7440-02-024 lbs0 lbs24 lbs
41Diphenylamine122-39-423 lbs0 lbs23 lbs
42Certain glycol ethersN23011 lbs0 lbs11 lbs
43Diethanolamine111-42-210 lbs0 lbs10 lbs
441,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
45Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

Explore More Properties