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
519 SHELDON RD CHANNELVIEW 77530
Elevation
25.5 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: 15.5 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
Moderate
Higher pollution than 74% 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)
456 thousand lbs
Very High
69.9x more than typical Houston property
≈ 23 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)
456 thousand lbs
Very High
94.5x 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)
564 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)456,258 lbs455,694 lbs564 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)149,167 lbs40,953 lbs63 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 74% 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):

1,2,4-Trimethylbenzene, Xylene (mixed isomers), n-Butyl alcohol, Certain glycol ethers, n-Hexane

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)
11,2,4-Trimethylbenzene95-63-6132,436 lbs2 lbs135,230 lbs
2Xylene (mixed isomers)1330-20-776,361 lbs17 lbs83,842 lbs
3n-Butyl alcohol71-36-366,696 lbs0 lbs66,696 lbs
4Certain glycol ethersN23036,286 lbs0 lbs36,286 lbs
5n-Hexane110-54-328,628 lbs0 lbs31,071 lbs
6Naphthalene91-20-321,982 lbs1 lbs24,148 lbs
7Cyclohexane110-82-717,867 lbs0 lbs23,451 lbs
8Toluene108-88-319,162 lbs92 lbs22,395 lbs
9Ethylbenzene100-41-416,670 lbs4 lbs17,516 lbs
10Benzene71-43-211,261 lbs84 lbs12,917 lbs
111,3-Butadiene106-99-012,796 lbs0 lbs12,796 lbs
12Methanol67-56-15,968 lbs0 lbs5,968 lbs
13Styrene100-42-52,528 lbs0 lbs2,528 lbs
14Methyl tert-butyl ether1634-04-42,304 lbs0 lbs2,304 lbs
15Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901,236 lbs41 lbs1,277 lbs
16Chromium7440-47-3879 lbs102 lbs981 lbs
17Hydrogen sulfide7783-06-4726 lbs0 lbs726 lbs
18Ethylene glycol107-21-1560 lbs0 lbs560 lbs
19Nickel7440-02-0386 lbs106 lbs492 lbs
20tert-Butyl alcohol75-65-0272 lbs0 lbs272 lbs
21Antimony compoundsN010235 lbs0 lbs235 lbs
22Vinyl acetate108-05-4215 lbs0 lbs215 lbs
23Cumene98-82-8107 lbs0 lbs108 lbs
24Copper7440-50-815 lbs43 lbs58 lbs
25Manganese7439-96-524 lbs22 lbs46 lbs
26Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs40 lbs40 lbs
27Dicyclopentadiene77-73-634 lbs0 lbs34 lbs
28Lead compoundsN42025 lbs4 lbs29 lbs
29Methyl methacrylate80-62-613 lbs0 lbs13 lbs
30Tetrachloroethylene127-18-410 lbs0 lbs10 lbs
31Trichloroethylene79-01-610 lbs0 lbs10 lbs
32Lead7439-92-13 lbs7 lbs10 lbs

Top chemicals released near this property (2024 only):

Styrene, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), n-Butyl alcohol, Xylene (mixed isomers), 1,2,4-Trimethylbenzene

View the full list of 22 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (22 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Styrene100-42-530 lbs0 lbs78,726 lbs
2Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs11 lbs15,941 lbs
3n-Butyl alcohol71-36-39,458 lbs0 lbs15,029 lbs
4Xylene (mixed isomers)1330-20-76,673 lbs0 lbs9,293 lbs
51,2,4-Trimethylbenzene95-63-67,218 lbs0 lbs7,218 lbs
6n-Hexane110-54-34,110 lbs0 lbs4,110 lbs
7Naphthalene91-20-32,703 lbs0 lbs4,093 lbs
8Methyl methacrylate80-62-61 lbs0 lbs3,658 lbs
9Certain glycol ethersN2302,726 lbs0 lbs2,726 lbs
10Toluene108-88-32,332 lbs0 lbs2,455 lbs
11Benzene71-43-21,563 lbs0 lbs1,645 lbs
12Ethylbenzene100-41-41,613 lbs0 lbs1,631 lbs
13Cyclohexane110-82-71,189 lbs0 lbs1,244 lbs
141,3-Butadiene106-99-0433 lbs0 lbs433 lbs
15Methyl tert-butyl ether1634-04-4354 lbs0 lbs354 lbs
16Vinyl acetate108-05-4205 lbs0 lbs205 lbs
17Chromium7440-47-3136 lbs32 lbs167 lbs
18Methanol67-56-1115 lbs0 lbs115 lbs
19Nickel7440-02-036 lbs20 lbs57 lbs
20Dicyclopentadiene77-73-634 lbs0 lbs34 lbs
21Cumene98-82-825 lbs0 lbs27 lbs
22Lead And Lead CompoundsN4200 lbs0 lbs7 lbs

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