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 N RICHEY ST PASADENA 77506
Elevation
15.71 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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: 5.71 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.

  • 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.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking
High
Higher pollution than 90% 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)
7.48 million lbs
Extremely High
1146.2x more than typical Houston property
≈ 374 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)
7.47 million lbs
Extremely High
1549.7x 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)
5 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)7,477,952 lbs7,473,319 lbs4,632 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)576,266 lbs447,702 lbs282 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 90% 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):

Propylene, n-Hexane, Hydrogen cyanide, Ammonia, Ethylene

View the full list of 53 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (53 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Propylene115-07-11,209,150 lbs0 lbs1,209,150 lbs
2n-Hexane110-54-31,139,711 lbs9 lbs1,140,210 lbs
3Hydrogen cyanide74-90-81,032,286 lbs0 lbs1,032,286 lbs
4Ammonia7664-41-7811,745 lbs0 lbs811,745 lbs
5Ethylene74-85-1536,228 lbs0 lbs536,228 lbs
6Xylene (mixed isomers)1330-20-7444,165 lbs741 lbs447,337 lbs
7Methanol67-56-1336,411 lbs0 lbs336,411 lbs
8Benzene71-43-2299,686 lbs486 lbs300,755 lbs
9Toluene108-88-3296,922 lbs277 lbs298,167 lbs
101,3-Butadiene106-99-0253,703 lbs0 lbs253,703 lbs
11Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9250,113 lbs0 lbs250,113 lbs
12Hydrogen sulfide7783-06-4244,215 lbs0 lbs244,216 lbs
13n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
14Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
15Cyclohexane110-82-781,237 lbs0 lbs82,006 lbs
16Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
17Ethylbenzene100-41-461,451 lbs118 lbs62,206 lbs
18Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
19Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
20Naphthalene91-20-320,148 lbs75 lbs21,558 lbs
211,2,4-Trimethylbenzene95-63-613,848 lbs0 lbs14,337 lbs
22Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
23Isoprene78-79-513,332 lbs0 lbs13,332 lbs
24Cumene98-82-88,938 lbs0 lbs9,127 lbs
25Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
26Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
27Ethylene glycol107-21-15,553 lbs0 lbs5,562 lbs
28Biphenyl92-52-45,161 lbs0 lbs5,502 lbs
29Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
30Polycyclic aromatic compoundsN5902,910 lbs525 lbs3,636 lbs
31Zinc compoundsN982219 lbs1,181 lbs2,891 lbs
32Formaldehyde50-00-02,284 lbs0 lbs2,284 lbs
33Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
34Phenol108-95-2815 lbs1,155 lbs1,970 lbs
35Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
36Formic acid64-18-61,406 lbs0 lbs1,406 lbs
37Styrene100-42-51,319 lbs0 lbs1,319 lbs
38Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
39Chlorine7782-50-5268 lbs0 lbs268 lbs
40Mercury compoundsN458165 lbs1 lbs166 lbs
41Nickel7440-02-0120 lbs0 lbs120 lbs
42Mercury7439-97-6106 lbs0 lbs106 lbs
43Mercury And Mercury CompoundsN45897 lbs0 lbs97 lbs
44Certain glycol ethersN23080 lbs0 lbs80 lbs
45Manganese7439-96-570 lbs0 lbs70 lbs
46Lead compoundsN4208 lbs51 lbs59 lbs
47Chromium7440-47-340 lbs0 lbs40 lbs
48C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
49Anthracene120-12-731 lbs0 lbs31 lbs
50Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
51Benzo[g,h,i]perylene191-24-23 lbs7 lbs11 lbs
52Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
53Lead And Lead CompoundsN4202 lbs6 lbs8 lbs

Top chemicals released near this property (2024 only):

Ammonia, Diethanolamine, Hydrogen cyanide, n-Hexane, Xylene (mixed isomers)

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)
1Ammonia7664-41-788,712 lbs0 lbs97,774 lbs
2Diethanolamine111-42-210,092 lbs0 lbs85,621 lbs
3Hydrogen cyanide74-90-873,728 lbs0 lbs73,728 lbs
4n-Hexane110-54-344,811 lbs0 lbs44,915 lbs
5Xylene (mixed isomers)1330-20-735,224 lbs28 lbs35,645 lbs
6Propylene115-07-134,427 lbs0 lbs34,427 lbs
71,3-Butadiene106-99-033,359 lbs0 lbs33,359 lbs
8Ethylene74-85-131,712 lbs0 lbs31,712 lbs
9Toluene108-88-321,684 lbs14 lbs21,888 lbs
10Benzene71-43-220,431 lbs114 lbs21,138 lbs
11Methanol67-56-115,730 lbs0 lbs20,533 lbs
12Zinc compoundsN98222 lbs32 lbs19,978 lbs
13Hydrogen sulfide7783-06-414,345 lbs0 lbs14,345 lbs
14Ethylene glycol107-21-1529 lbs0 lbs7,568 lbs
15Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
16Cyclohexane110-82-74,465 lbs0 lbs4,483 lbs
17Ethylbenzene100-41-44,112 lbs13 lbs4,207 lbs
18Phenol108-95-2255 lbs8 lbs3,101 lbs
19Isoprene78-79-52,379 lbs0 lbs2,379 lbs
20Formaldehyde50-00-0255 lbs0 lbs2,348 lbs
21Formic acid64-18-6189 lbs0 lbs1,968 lbs
221,2,4-Trimethylbenzene95-63-61,381 lbs0 lbs1,593 lbs
23Naphthalene91-20-31,370 lbs7 lbs1,462 lbs
24Lead And Lead CompoundsN4200 lbs5 lbs1,192 lbs
25Certain glycol ethersN23010 lbs0 lbs1,121 lbs
26Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
27Dimethylamine124-40-3864 lbs0 lbs884 lbs
28Cumene98-82-8556 lbs0 lbs562 lbs
29Polycyclic aromatic compoundsN590354 lbs55 lbs409 lbs
30Acrylonitrile107-13-1278 lbs0 lbs294 lbs
31Lead compoundsN4200 lbs0 lbs269 lbs
32Propylene oxide75-56-9255 lbs0 lbs255 lbs
33Styrene100-42-5110 lbs0 lbs110 lbs
34Acetaldehyde75-07-045 lbs0 lbs45 lbs
35Biphenyl92-52-433 lbs0 lbs33 lbs
36Manganese7439-96-530 lbs0 lbs30 lbs
37Chlorine7782-50-525 lbs0 lbs25 lbs
38Chromium7440-47-325 lbs0 lbs25 lbs
39Nickel7440-02-024 lbs0 lbs24 lbs
40Mercury And Mercury CompoundsN45821 lbs0 lbs23 lbs
41Lead7439-92-10 lbs0 lbs8 lbs
42Mercury7439-97-67 lbs0 lbs7 lbs
43Benzo[g,h,i]perylene191-24-20 lbs5 lbs5 lbs
44Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs
45Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs3 lbs

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