Home > Analysis: 4114 Sayers St, Houston, TX 77026 12/30/2024

📊 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
4114 SAYERS ST HOUSTON 77026
Building Size
1,316 sqft
Total structure area from HCAD building records.
Elevation
45.08 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
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: 35.08 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
Moderate
Higher pollution than 72% 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)
296 thousand lbs
High
45.4x more than typical Houston property
15 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)
295 thousand lbs
Very High
61.2x 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)
45 lbs
Above Typical
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)296,307 lbs295,089 lbs45 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)27,796 lbs23,584 lbs2 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 72% 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):

Xylene (mixed isomers), Styrene, n-Butyl alcohol, N-Methyl-2-pyrrolidone, Phenol

View the full list of 26 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (26 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Xylene (mixed isomers)1330-20-7101,6740101,674
2Styrene100-42-572,716072,716
3n-Butyl alcohol71-36-333,617033,617
4N-Methyl-2-pyrrolidone872-50-431,840031,840
5Phenol108-95-223,252023,252
6Ethylbenzene100-41-416,163016,163
7Ammonia7664-41-73,77003,770
8Methyl isobutyl ketone108-10-13,35503,355
9Toluene108-88-31,87103,044
10Formaldehyde50-00-01,89301,893
11Methanol67-56-11,84901,849
12Methyl tert-butyl ether1634-04-41,02101,021
13Ethylene glycol107-21-16050605
141,2,4-Trimethylbenzene95-63-63180318
15Lead7439-92-117445219
16Benzene71-43-22180218
17n-Hexane110-54-32080208
18Zinc compoundsN9821920192
19Cadmium compoundsN0781060106
20Cadmium And Cadmium CompoundsN07870070
21Copper7440-50-867067
22Cyanide compoundsN10650050
23Naphthalene91-20-332032
24Chromium compounds (except for chromite ore mined in the Transvaal Region)N09017017
25Zinc (fume or dust)7440-66-6909
26Cumene98-82-8101

Top chemicals released near this property (2024 only):

Xylene (mixed isomers), Styrene, Cadmium And Cadmium Compounds, Zinc compounds, Chromium compounds (except for chromite ore mined in the Transvaal Region)

View the full list of 13 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (13 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Xylene (mixed isomers)1330-20-716,019016,019
2Styrene100-42-57,40007,400
3Cadmium And Cadmium CompoundsN0781001,927
4Zinc compoundsN9821401,335
5Chromium compounds (except for chromite ore mined in the Transvaal Region)N09010902
6Methanol67-56-11250125
7Cyanide compoundsN1065046
8Molybdenum trioxide1313-27-50021
9Ethylene glycol107-21-110010
10Nickel And Nickel CompoundsN495005
11Vanadium (except when contained in an alloy)7440-62-2003
12Lead7439-92-1022
13Lead compoundsN420001