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
223 MAGNOLIA ST CHANNELVIEW 77530
Building Size
3,157 sqft
Total structure area from HCAD building records.
Elevation
29.32 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: 19.32 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
Very High
Higher pollution than 91% 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)
10.88 million lbs
Extremely High
1667.9x more than typical Houston property
≈ 544 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)
10.86 million lbs
Extremely High
2252.6x 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)
19 thousand lbs
Extremely 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)10,881,936 lbs10,862,717 lbs19,219 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)3,117,364 lbs1,154,005 lbs1,264 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 91% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).

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

Methanol, Ethylbenzene, Acetophenone, Styrene, 1,3-Butadiene

View the full list of 64 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (64 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1488,751 lbs0 lbs20,440,747 lbs
2Ethylbenzene100-41-4784,426 lbs6 lbs6,653,201 lbs
3Acetophenone98-86-2147,701 lbs0 lbs6,062,471 lbs
4Styrene100-42-5487,136 lbs0 lbs2,939,348 lbs
51,3-Butadiene106-99-01,905,325 lbs0 lbs1,905,325 lbs
6Allyl alcohol107-18-656,687 lbs0 lbs1,530,217 lbs
7Benzene71-43-2863,334 lbs96 lbs1,160,474 lbs
8Propylene115-07-11,008,558 lbs0 lbs1,008,558 lbs
9Propylene oxide75-56-9750,217 lbs0 lbs823,893 lbs
10Ammonia7664-41-7797,177 lbs9,985 lbs807,162 lbs
11Phenol108-95-22,427 lbs0 lbs742,109 lbs
12Acetonitrile75-05-8373,837 lbs0 lbs726,784 lbs
13Ethylene74-85-1698,385 lbs0 lbs698,385 lbs
14Acetaldehyde75-07-0587,542 lbs0 lbs587,542 lbs
15tert-Butyl alcohol75-65-0109,207 lbs0 lbs557,780 lbs
16Toluene108-88-3268,296 lbs7 lbs524,492 lbs
17n-Butyl alcohol71-36-320,643 lbs0 lbs483,204 lbs
18N-Methyl-2-pyrrolidone872-50-42,753 lbs0 lbs427,839 lbs
19Naphthalene91-20-3291,930 lbs0 lbs291,930 lbs
20Methyl tert-butyl ether1634-04-4232,440 lbs0 lbs253,414 lbs
21n-Hexane110-54-3220,127 lbs6 lbs220,133 lbs
22Xylene (mixed isomers)1330-20-7185,460 lbs6 lbs189,402 lbs
23Isoprene78-79-5159,549 lbs0 lbs159,549 lbs
24Cumene98-82-894,704 lbs0 lbs125,190 lbs
25Tetrachloroethylene127-18-4105,015 lbs0 lbs105,015 lbs
261,2,4-Trimethylbenzene95-63-661,742 lbs6 lbs61,748 lbs
27Dicyclopentadiene77-73-651,020 lbs5 lbs51,025 lbs
28Propionaldehyde123-38-613,598 lbs0 lbs36,618 lbs
29Ethylene oxide75-21-826,715 lbs0 lbs26,715 lbs
30Chlorine7782-50-515,020 lbs0 lbs15,020 lbs
31Molybdenum trioxide1313-27-510,461 lbs0 lbs10,461 lbs
32Cyclohexane110-82-78,292 lbs5 lbs8,297 lbs
33Cyclohexanol108-93-05,782 lbs0 lbs5,782 lbs
34Maleic anhydride108-31-65,323 lbs0 lbs5,323 lbs
35Vinyl acetate108-05-44,649 lbs0 lbs4,649 lbs
36Phenanthrene85-01-83,788 lbs0 lbs3,788 lbs
37Copper compoundsN1000 lbs3,694 lbs3,694 lbs
38Furan110-00-92,941 lbs0 lbs2,941 lbs
39Nickel7440-02-0315 lbs2,527 lbs2,842 lbs
40Crotonaldehyde4170-30-32,750 lbs0 lbs2,750 lbs
41Chromium compounds (except for chromite ore mined in the Transvaal Region)N090356 lbs960 lbs1,316 lbs
42Ethylene glycol107-21-11,065 lbs0 lbs1,065 lbs
43Certain glycol ethersN2301,026 lbs0 lbs1,026 lbs
44sec-Butyl alcohol78-92-2948 lbs0 lbs948 lbs
45Copper And Copper CompoundsN1000 lbs917 lbs917 lbs
46Chromium7440-47-3817 lbs26 lbs843 lbs
47Manganese7439-96-5500 lbs270 lbs770 lbs
48Hydrogen sulfide7783-06-4750 lbs5 lbs755 lbs
49Formic acid64-18-6703 lbs0 lbs703 lbs
50Anthracene120-12-7700 lbs0 lbs700 lbs
51p-Xylene106-42-3500 lbs0 lbs500 lbs
52Lead7439-92-153 lbs413 lbs466 lbs
53Acrolein107-02-8445 lbs0 lbs445 lbs
54Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N090160 lbs282 lbs442 lbs
55Polycyclic aromatic compoundsN590182 lbs2 lbs184 lbs
561,2-Butylene oxide106-88-7164 lbs0 lbs164 lbs
57Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040125 lbs0 lbs125 lbs
58Barium And Barium CompoundsN040125 lbs0 lbs125 lbs
59Mercury7439-97-622 lbs0 lbs55 lbs
60Dioxin and dioxin-like compoundsN15018 lbs0 lbs18 lbs
61Methyl methacrylate80-62-618 lbs0 lbs18 lbs
62Trichloroethylene79-01-610 lbs0 lbs10 lbs
63Isobutyraldehyde78-84-28 lbs0 lbs8 lbs
64Acetamide60-35-51 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Ethylbenzene, Acetophenone, 1,3-Butadiene, Styrene

View the full list of 53 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (53 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-146,269 lbs0 lbs762,933 lbs
2Ethylbenzene100-41-482,197 lbs0 lbs523,389 lbs
3Acetophenone98-86-210,585 lbs0 lbs370,956 lbs
41,3-Butadiene106-99-0229,045 lbs0 lbs229,045 lbs
5Styrene100-42-525,329 lbs0 lbs197,361 lbs
6Benzene71-43-2106,214 lbs1 lbs132,824 lbs
7Propylene115-07-1126,126 lbs0 lbs126,126 lbs
8Acetonitrile75-05-828,355 lbs0 lbs102,022 lbs
9Propylene oxide75-56-985,097 lbs0 lbs94,962 lbs
10Ammonia7664-41-792,037 lbs826 lbs92,863 lbs
11Allyl alcohol107-18-61,916 lbs0 lbs87,173 lbs
12Acetaldehyde75-07-058,529 lbs0 lbs58,529 lbs
13Ethylene74-85-146,945 lbs0 lbs46,945 lbs
14Toluene108-88-322,632 lbs0 lbs38,054 lbs
15Methyl tert-butyl ether1634-04-431,931 lbs0 lbs33,275 lbs
16n-Hexane110-54-329,029 lbs0 lbs29,169 lbs
17Naphthalene91-20-328,217 lbs0 lbs28,303 lbs
18tert-Butyl alcohol75-65-025,572 lbs0 lbs27,089 lbs
19Xylene (mixed isomers)1330-20-720,412 lbs0 lbs21,418 lbs
20Isoprene78-79-519,021 lbs0 lbs19,021 lbs
21n-Butyl alcohol71-36-3277 lbs0 lbs14,838 lbs
22Vinyl acetate108-05-4808 lbs0 lbs12,815 lbs
23Tetrachloroethylene127-18-412,768 lbs0 lbs12,768 lbs
24Phenol108-95-2154 lbs0 lbs6,862 lbs
25Barium And Barium CompoundsN04035 lbs0 lbs5,615 lbs
26Nickel7440-02-036 lbs103 lbs4,933 lbs
271,2,4-Trimethylbenzene95-63-64,257 lbs0 lbs4,460 lbs
28Dicyclopentadiene77-73-64,145 lbs0 lbs4,164 lbs
29Cumene98-82-81,675 lbs0 lbs3,684 lbs
30Methyl methacrylate80-62-61 lbs0 lbs3,658 lbs
31Molybdenum trioxide1313-27-53,521 lbs0 lbs3,521 lbs
32Ethylene oxide75-21-83,097 lbs0 lbs3,097 lbs
33N-Methyl-2-pyrrolidone872-50-4130 lbs0 lbs2,482 lbs
34Propionaldehyde123-38-6726 lbs0 lbs2,467 lbs
35Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09031 lbs2 lbs1,802 lbs
36Furan110-00-91,574 lbs0 lbs1,574 lbs
37Cyclohexane110-82-71,418 lbs0 lbs1,418 lbs
38Crotonaldehyde4170-30-31,396 lbs0 lbs1,396 lbs
39Copper And Copper CompoundsN1000 lbs263 lbs1,371 lbs
40Chlorine7782-50-51,174 lbs0 lbs1,174 lbs
41p-Xylene106-42-3500 lbs0 lbs500 lbs
42Phenanthrene85-01-8253 lbs0 lbs356 lbs
43Lead7439-92-115 lbs69 lbs346 lbs
44sec-Butyl alcohol78-92-2285 lbs0 lbs285 lbs
45Chromium7440-47-3136 lbs0 lbs136 lbs
46Anthracene120-12-749 lbs0 lbs49 lbs
47Mercury7439-97-63 lbs0 lbs47 lbs
48Formic acid64-18-641 lbs0 lbs41 lbs
49Acrolein107-02-829 lbs0 lbs29 lbs
501,2-Butylene oxide106-88-77 lbs0 lbs7 lbs
51Polycyclic aromatic compoundsN5901 lbs0 lbs6 lbs
52Isobutyraldehyde78-84-24 lbs0 lbs4 lbs
53Dioxin and dioxin-like compoundsN1502 lbs0 lbs2 lbs

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