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
1211 WITTER ST PASADENA 77506
Building Size
1,004 sqft
Total structure area from HCAD building records.
Elevation
28.27 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: 18.27 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 78% 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)
625 thousand lbs
Very High
95.8x more than typical Houston property
≈ 31 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)
625 thousand lbs
Extremely High
129.6x 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)
463 lbs
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)625,214 lbs624,752 lbs463 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)55,345 lbs45,542 lbs15 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 78% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile (top 25% most polluted).

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

Methanol, Ammonia, Vinyl acetate, Xylene (mixed isomers), Toluene

View the full list of 32 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (32 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1267,145 lbs0 lbs267,145 lbs
2Ammonia7664-41-7107,863 lbs0 lbs107,863 lbs
3Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
4Xylene (mixed isomers)1330-20-747,090 lbs33 lbs47,132 lbs
5Toluene108-88-335,176 lbs27 lbs35,212 lbs
6n-Hexane110-54-323,595 lbs170 lbs23,766 lbs
71,2,4-Trimethylbenzene95-63-622,527 lbs105 lbs22,635 lbs
8Benzene71-43-213,609 lbs24 lbs13,635 lbs
9Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
10Ethylbenzene100-41-46,798 lbs22 lbs6,822 lbs
11Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
12Ethylene glycol107-21-15,553 lbs0 lbs5,553 lbs
13Formaldehyde50-00-02,284 lbs0 lbs2,284 lbs
14Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
15Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
16Formic acid64-18-61,406 lbs0 lbs1,406 lbs
17Cyclohexane110-82-7995 lbs0 lbs995 lbs
18Phenol108-95-2815 lbs0 lbs815 lbs
19Naphthalene91-20-3596 lbs21 lbs618 lbs
20Diethanolamine111-42-2600 lbs0 lbs600 lbs
21Cumene98-82-8437 lbs10 lbs448 lbs
22Nickel7440-02-0120 lbs0 lbs120 lbs
23Certain glycol ethersN23092 lbs0 lbs92 lbs
24Manganese7439-96-570 lbs0 lbs70 lbs
25Styrene100-42-556 lbs0 lbs56 lbs
26C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
27Chromium7440-47-340 lbs0 lbs40 lbs
28Lead And Lead CompoundsN4203 lbs22 lbs25 lbs
29Lead compoundsN4202 lbs22 lbs23 lbs
30Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
31Polycyclic aromatic compoundsN5903 lbs2 lbs4 lbs
32Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Ammonia, Vinyl acetate, Xylene (mixed isomers), Toluene

View the full list of 29 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (29 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-115,730 lbs0 lbs20,533 lbs
2Ammonia7664-41-76,678 lbs0 lbs7,432 lbs
3Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
4Xylene (mixed isomers)1330-20-73,651 lbs5 lbs3,658 lbs
5Toluene108-88-33,558 lbs3 lbs3,562 lbs
6n-Hexane110-54-32,883 lbs0 lbs2,883 lbs
7Formaldehyde50-00-0255 lbs0 lbs2,348 lbs
81,2,4-Trimethylbenzene95-63-62,183 lbs0 lbs2,186 lbs
9Formic acid64-18-6189 lbs0 lbs1,968 lbs
10Benzene71-43-21,415 lbs2 lbs1,417 lbs
11Dimethylamine124-40-3864 lbs0 lbs884 lbs
12Ethylene glycol107-21-1529 lbs0 lbs549 lbs
13Ethylbenzene100-41-4496 lbs3 lbs499 lbs
14Acrylonitrile107-13-1278 lbs0 lbs294 lbs
15Phenol108-95-2255 lbs0 lbs276 lbs
16Lead compoundsN4200 lbs0 lbs269 lbs
17Propylene oxide75-56-9255 lbs0 lbs255 lbs
18Cyclohexane110-82-7232 lbs0 lbs232 lbs
19Naphthalene91-20-355 lbs1 lbs60 lbs
20Acetaldehyde75-07-045 lbs0 lbs45 lbs
21Cumene98-82-833 lbs0 lbs33 lbs
22Manganese7439-96-530 lbs0 lbs30 lbs
23Chromium7440-47-325 lbs0 lbs25 lbs
24Nickel7440-02-024 lbs0 lbs24 lbs
25Certain glycol ethersN23011 lbs0 lbs11 lbs
26Diethanolamine111-42-210 lbs0 lbs10 lbs
27Styrene100-42-57 lbs0 lbs7 lbs
28Lead And Lead CompoundsN4201 lbs1 lbs1 lbs
29Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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