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
722 COOLIDGE ST CHANNELVIEW 77530
Building Size
896 sqft
Total structure area from HCAD building records.
Elevation
22.17 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: 12.17 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 77% 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)
592 thousand lbs
Very High
90.7x more than typical Houston property
≈ 30 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)
586 thousand lbs
Extremely High
121.6x 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)591,919 lbs586,313 lbs5,606 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)306,278 lbs53,766 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 77% 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, Methyl tert-butyl ether, Certain glycol ethers

View the full list of 39 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (39 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 alcohol71-36-366,901 lbs6 lbs66,907 lbs
4Methyl tert-butyl ether1634-04-444,474 lbs263 lbs44,737 lbs
5Certain glycol ethersN23036,305 lbs0 lbs36,305 lbs
6n-Hexane110-54-328,779 lbs0 lbs31,222 lbs
7Isobutyraldehyde78-84-227,782 lbs0 lbs27,782 lbs
8Naphthalene91-20-322,164 lbs1 lbs24,330 lbs
9Cyclohexane110-82-718,082 lbs7 lbs23,673 lbs
10Toluene108-88-319,162 lbs92 lbs22,395 lbs
11Methyl isobutyl ketone108-10-119,125 lbs3,068 lbs22,193 lbs
12Ethylbenzene100-41-416,670 lbs4 lbs17,516 lbs
13tert-Butyl alcohol75-65-015,928 lbs1,309 lbs17,237 lbs
14Vinyl acetate108-05-416,160 lbs87 lbs16,247 lbs
15Benzene71-43-211,261 lbs84 lbs12,917 lbs
161,3-Butadiene106-99-012,796 lbs0 lbs12,796 lbs
17Methanol67-56-111,240 lbs308 lbs11,548 lbs
18Chromium7440-47-32,629 lbs102 lbs2,731 lbs
19Styrene100-42-52,528 lbs0 lbs2,528 lbs
20Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901,236 lbs41 lbs1,277 lbs
21Ethyl acrylate140-88-5728 lbs0 lbs728 lbs
22Hydrogen sulfide7783-06-4726 lbs0 lbs726 lbs
23Propylene115-07-1704 lbs0 lbs704 lbs
24Ethylene glycol107-21-1575 lbs0 lbs575 lbs
25Nickel7440-02-0421 lbs106 lbs527 lbs
26Dicyclopentadiene77-73-6379 lbs0 lbs379 lbs
27Antimony compoundsN010235 lbs0 lbs235 lbs
28Butyraldehyde123-72-8218 lbs0 lbs218 lbs
29Cumene98-82-8107 lbs0 lbs108 lbs
30Manganese7439-96-559 lbs22 lbs81 lbs
31Copper7440-50-815 lbs43 lbs58 lbs
32sec-Butyl alcohol78-92-255 lbs0 lbs55 lbs
33Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs40 lbs40 lbs
34Lead compoundsN42025 lbs4 lbs29 lbs
352-Methoxyethanol109-86-413 lbs0 lbs13 lbs
36Methyl methacrylate80-62-613 lbs0 lbs13 lbs
37Tetrachloroethylene127-18-410 lbs0 lbs10 lbs
38Trichloroethylene79-01-610 lbs0 lbs10 lbs
39Biphenyl92-52-43 lbs0 lbs3 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 27 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (27 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Isobutyraldehyde78-84-22,245 lbs0 lbs146,162 lbs
2Styrene100-42-530 lbs0 lbs78,726 lbs
3Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs11 lbs15,941 lbs
4n-Butyl alcohol71-36-39,478 lbs0 lbs15,049 lbs
5Xylene (mixed isomers)1330-20-76,673 lbs0 lbs9,293 lbs
61,2,4-Trimethylbenzene95-63-67,218 lbs0 lbs7,218 lbs
7Methyl tert-butyl ether1634-04-45,649 lbs56 lbs5,705 lbs
8n-Hexane110-54-34,148 lbs0 lbs4,148 lbs
9Naphthalene91-20-32,730 lbs0 lbs4,120 lbs
10Methyl methacrylate80-62-61 lbs0 lbs3,658 lbs
11Vinyl acetate108-05-43,246 lbs0 lbs3,246 lbs
12Certain glycol ethersN2302,726 lbs0 lbs2,726 lbs
13Toluene108-88-32,332 lbs0 lbs2,455 lbs
14Benzene71-43-21,563 lbs0 lbs1,645 lbs
15Ethylbenzene100-41-41,613 lbs0 lbs1,631 lbs
16tert-Butyl alcohol75-65-01,168 lbs273 lbs1,441 lbs
17Cyclohexane110-82-71,189 lbs0 lbs1,244 lbs
18Methyl isobutyl ketone108-10-1804 lbs52 lbs856 lbs
191,3-Butadiene106-99-0433 lbs0 lbs433 lbs
20Chromium7440-47-3136 lbs32 lbs167 lbs
21Ethyl acrylate140-88-5117 lbs0 lbs117 lbs
22Methanol67-56-1115 lbs0 lbs115 lbs
23Nickel7440-02-036 lbs20 lbs57 lbs
24sec-Butyl alcohol78-92-255 lbs0 lbs55 lbs
25Dicyclopentadiene77-73-637 lbs0 lbs37 lbs
26Cumene98-82-825 lbs0 lbs27 lbs
27Lead And Lead CompoundsN4200 lbs0 lbs7 lbs

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