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
15710 GARLANG ST CHANNELVIEW 77530
Building Size
1,248 sqft
Total structure area from HCAD building records.
Elevation
20.81 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: 10.81 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 80% 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)
939 thousand lbs
Extremely High
143.9x more than typical Houston property
≈ 47 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)
933 thousand lbs
Extremely High
193.6x 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)
6 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)939,015 lbs933,403 lbs5,613 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)417,609 lbs165,097 lbs444 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 80% 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):

Ethylene glycol, 1,2,4-Trimethylbenzene, Xylene (mixed isomers), n-Butyl alcohol, Methyl tert-butyl ether

View the full list of 42 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (42 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene glycol107-21-1343,060 lbs0 lbs343,060 lbs
21,2,4-Trimethylbenzene95-63-6132,436 lbs2 lbs135,230 lbs
3Xylene (mixed isomers)1330-20-776,361 lbs17 lbs83,842 lbs
4n-Butyl alcohol71-36-366,901 lbs6 lbs66,907 lbs
5Methyl tert-butyl ether1634-04-444,474 lbs263 lbs44,737 lbs
6Certain glycol ethersN23036,305 lbs0 lbs36,305 lbs
7n-Hexane110-54-328,779 lbs0 lbs31,222 lbs
8Isobutyraldehyde78-84-227,782 lbs0 lbs27,782 lbs
9Naphthalene91-20-322,164 lbs1 lbs24,330 lbs
10Cyclohexane110-82-718,082 lbs7 lbs23,673 lbs
11Toluene108-88-319,162 lbs92 lbs22,395 lbs
12Methyl isobutyl ketone108-10-119,125 lbs3,068 lbs22,193 lbs
13Ethylbenzene100-41-416,670 lbs4 lbs17,516 lbs
14tert-Butyl alcohol75-65-015,928 lbs1,309 lbs17,237 lbs
15Vinyl acetate108-05-416,160 lbs87 lbs16,247 lbs
16Benzene71-43-211,261 lbs84 lbs12,917 lbs
171,3-Butadiene106-99-012,796 lbs0 lbs12,796 lbs
18Methanol67-56-111,240 lbs308 lbs11,548 lbs
19Chlorine7782-50-54,596 lbs0 lbs4,596 lbs
20Chromium7440-47-32,629 lbs102 lbs2,731 lbs
21Styrene100-42-52,528 lbs0 lbs2,528 lbs
22Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901,236 lbs41 lbs1,277 lbs
23Ethyl acrylate140-88-5728 lbs0 lbs728 lbs
24Hydrogen sulfide7783-06-4726 lbs0 lbs726 lbs
25Propylene115-07-1704 lbs0 lbs704 lbs
26Nickel7440-02-0421 lbs106 lbs527 lbs
27Dicyclopentadiene77-73-6379 lbs0 lbs379 lbs
28Antimony compoundsN010235 lbs0 lbs235 lbs
29Butyraldehyde123-72-8218 lbs0 lbs218 lbs
30Cumene98-82-8107 lbs0 lbs108 lbs
31Manganese7439-96-559 lbs22 lbs81 lbs
32Copper7440-50-815 lbs43 lbs58 lbs
33sec-Butyl alcohol78-92-255 lbs0 lbs55 lbs
34Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs40 lbs40 lbs
35Lead compoundsN42025 lbs4 lbs29 lbs
362-Methoxyethanol109-86-413 lbs0 lbs13 lbs
37Methyl methacrylate80-62-613 lbs0 lbs13 lbs
38Tetrachloroethylene127-18-410 lbs0 lbs10 lbs
39Trichloroethylene79-01-610 lbs0 lbs10 lbs
40Lead7439-92-13 lbs7 lbs10 lbs
41Zinc compoundsN9825 lbs0 lbs6 lbs
42Biphenyl92-52-43 lbs0 lbs3 lbs

Top chemicals released near this property (2024 only):

Isobutyraldehyde, Ethylene glycol, Styrene, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), n-Butyl alcohol

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)
1Isobutyraldehyde78-84-22,245 lbs0 lbs146,162 lbs
2Ethylene glycol107-21-1110,903 lbs0 lbs110,903 lbs
3Styrene100-42-530 lbs0 lbs78,726 lbs
4Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs11 lbs15,941 lbs
5n-Butyl alcohol71-36-39,478 lbs0 lbs15,049 lbs
6Xylene (mixed isomers)1330-20-76,673 lbs0 lbs9,293 lbs
71,2,4-Trimethylbenzene95-63-67,218 lbs0 lbs7,218 lbs
8Methyl tert-butyl ether1634-04-45,649 lbs56 lbs5,705 lbs
9n-Hexane110-54-34,148 lbs0 lbs4,148 lbs
10Naphthalene91-20-32,730 lbs0 lbs4,120 lbs
11Methyl methacrylate80-62-61 lbs0 lbs3,658 lbs
12Vinyl acetate108-05-43,246 lbs0 lbs3,246 lbs
13Certain glycol ethersN2302,726 lbs0 lbs2,726 lbs
14Toluene108-88-32,332 lbs0 lbs2,455 lbs
15Benzene71-43-21,563 lbs0 lbs1,645 lbs
16Ethylbenzene100-41-41,613 lbs0 lbs1,631 lbs
17tert-Butyl alcohol75-65-01,168 lbs273 lbs1,441 lbs
18Cyclohexane110-82-71,189 lbs0 lbs1,244 lbs
19Methyl isobutyl ketone108-10-1804 lbs52 lbs856 lbs
201,3-Butadiene106-99-0433 lbs0 lbs433 lbs
21Chlorine7782-50-5428 lbs0 lbs428 lbs
22Chromium7440-47-3136 lbs32 lbs167 lbs
23Ethyl acrylate140-88-5117 lbs0 lbs117 lbs
24Methanol67-56-1115 lbs0 lbs115 lbs
25Nickel7440-02-036 lbs20 lbs57 lbs
26sec-Butyl alcohol78-92-255 lbs0 lbs55 lbs
27Dicyclopentadiene77-73-637 lbs0 lbs37 lbs
28Cumene98-82-825 lbs0 lbs27 lbs
29Lead And Lead CompoundsN4200 lbs0 lbs7 lbs

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