Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 308 S Main St, Galena Park, TX 77547

HCAD #0381040450006
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🌍Environmental Assessment

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.

🌊Flood Risk Analysis
FEMA Zone X
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
308 S Main St, Galena Park, TX 77547
Elevation
23.73 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very High
Property flooded at 9.84ft depth.
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 High
Flood Depth
9.84 ft±0.5 ft
Depth of water above ground level.
Water Surface Elevation (WSE)
33.58 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
205.7 acres
69.8% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$0
Vacant lot (no building data).
Depth-Damage (Neighborhood)
$0
Vacant lot (no building data).
Analysis Method
COG Combined 5000 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 Flooded
Flood Depth: 9.84 feet
Severity
Severe
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.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
5.8th percentile
Property Pollution Ranking
Very High
Higher pollution than 94% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
22.43 millionlbs
Extremely High
3438.6x more than typical Houston property
≈ 1.1K dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
9.4 millionlbs
Extremely High
1949.1x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
13.04 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
20
Industrial facilities within 2 miles
💡
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)22,434,681 lbs9,399,090 lbs13,035,591 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,669,791 lbs615,954 lbs2,052,989 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 94% 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):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Propylene, n-Hexane, Ammonia
View the full list of 79 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(79 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs13,016,167 lbs13,016,167 lbs
2Hydrogen cyanide74-90-82,440,300 lbs0 lbs2,440,300 lbs
3Propylene115-07-11,262,932 lbs0 lbs1,262,932 lbs
4n-Hexane110-54-31,182,567 lbs9 lbs1,183,066 lbs
5Ammonia7664-41-71,040,830 lbs8,000 lbs1,048,830 lbs
6Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9633,748 lbs0 lbs633,748 lbs
7Xylene (mixed isomers)1330-20-7506,726 lbs741 lbs509,897 lbs
8Toluene108-88-3388,513 lbs294 lbs389,775 lbs
9Ethylene74-85-1387,367 lbs0 lbs387,367 lbs
10Benzene71-43-2359,192 lbs496 lbs360,271 lbs
11Hydrogen sulfide7783-06-4268,202 lbs3,527 lbs271,730 lbs
12Cyclohexane110-82-7146,851 lbs0 lbs147,620 lbs
13n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
14Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
15Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
16Ethylbenzene100-41-481,738 lbs168 lbs82,543 lbs
17Methanol67-56-164,581 lbs0 lbs64,581 lbs
181,3-Butadiene106-99-058,960 lbs0 lbs58,960 lbs
191,2,4-Trimethylbenzene95-63-631,181 lbs0 lbs31,670 lbs
20Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
21Naphthalene91-20-324,577 lbs75 lbs25,987 lbs
22Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
23Ethylene glycol107-21-119,945 lbs0 lbs19,954 lbs
24Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
25Cumene98-82-811,194 lbs0 lbs11,383 lbs
261,4-Dioxane123-91-110,779 lbs0 lbs10,779 lbs
27Carbon disulfide75-15-08,908 lbs0 lbs8,908 lbs
28Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
29Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
30Biphenyl92-52-45,161 lbs0 lbs5,502 lbs
31Polycyclic aromatic compoundsN5904,543 lbs525 lbs5,269 lbs
32Phenol108-95-21,635 lbs2,959 lbs4,594 lbs
33Manganese7439-96-54,228 lbs0 lbs4,228 lbs
34Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
35Styrene100-42-53,431 lbs0 lbs3,431 lbs
36Zinc compoundsN982219 lbs1,181 lbs2,891 lbs
37Phthalic anhydride85-44-92,000 lbs0 lbs2,000 lbs
38Vinyl acetate108-05-41,608 lbs0 lbs1,608 lbs
39Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,460 lbs0 lbs1,460 lbs
40Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
41Nickel compoundsN495654 lbs489 lbs1,143 lbs
42Acetaldehyde75-07-01,011 lbs0 lbs1,011 lbs
43Phenanthrene85-01-8937 lbs0 lbs937 lbs
44Lead7439-92-1657 lbs170 lbs828 lbs
45Vanadium compoundsN770144 lbs509 lbs653 lbs
461,1,1,2-Tetrachloroethane630-20-6434 lbs0 lbs434 lbs
47Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
48Chlorine7782-50-5268 lbs0 lbs268 lbs
49Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
50Lead And Lead CompoundsN420204 lbs22 lbs227 lbs
51Mercury compoundsN458200 lbs2 lbs203 lbs
52Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
53Cobalt compoundsN096131 lbs24 lbs155 lbs
54Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
55Lead compoundsN42050 lbs57 lbs107 lbs
56Mercury7439-97-6106 lbs0 lbs106 lbs
57Dimethylamine124-40-390 lbs0 lbs90 lbs
58Certain glycol ethersN23080 lbs0 lbs80 lbs
59Anthracene120-12-775 lbs0 lbs75 lbs
60Isoprene78-79-560 lbs0 lbs60 lbs
61Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
62C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
63Antimony compoundsN01038 lbs0 lbs38 lbs
64Nickel7440-02-035 lbs0 lbs35 lbs
65Allyl alcohol107-18-634 lbs0 lbs34 lbs
66Benzo[g,h,i]perylene191-24-216 lbs7 lbs24 lbs
67tert-Butyl alcohol75-65-022 lbs0 lbs22 lbs
68Methoxone sodium salt3653-48-320 lbs0 lbs20 lbs
69Triethylamine121-44-817 lbs0 lbs17 lbs
70Acrolein107-02-813 lbs0 lbs13 lbs
71Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
72Hydroquinone123-31-99 lbs0 lbs9 lbs
73Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
74Diaminotoluene (mixed isomers)25376-45-84 lbs0 lbs4 lbs
75Pyridine110-86-13 lbs0 lbs3 lbs
76Chloroethane75-00-32 lbs0 lbs2 lbs
77p-Cresol106-44-52 lbs0 lbs2 lbs
78Trichloroethylene79-01-61 lbs0 lbs1 lbs
792,4-Diaminotoluene95-80-71 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), n-Hexane
View the full list of 47 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(47 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,051,661 lbs2,051,661 lbs
2Hydrogen cyanide74-90-8177,459 lbs0 lbs177,459 lbs
3Ammonia7664-41-7110,253 lbs1,027 lbs111,280 lbs
4Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-950,799 lbs0 lbs50,799 lbs
5n-Hexane110-54-343,068 lbs0 lbs43,172 lbs
6Xylene (mixed isomers)1330-20-739,577 lbs28 lbs39,888 lbs
7Propylene115-07-137,873 lbs0 lbs37,873 lbs
8Toluene108-88-327,802 lbs18 lbs27,925 lbs
9Ozone10028-15-625,701 lbs0 lbs25,701 lbs
10Benzene71-43-225,261 lbs118 lbs25,410 lbs
11Ethylene74-85-117,866 lbs0 lbs17,866 lbs
12Hydrogen sulfide7783-06-415,060 lbs0 lbs15,060 lbs
13Cyclohexane110-82-711,657 lbs0 lbs11,675 lbs
14Diethanolamine111-42-210,092 lbs0 lbs10,092 lbs
15Ethylbenzene100-41-45,524 lbs17 lbs5,611 lbs
16Ethylene glycol107-21-15,594 lbs0 lbs5,594 lbs
171,2,4-Trimethylbenzene95-63-62,830 lbs0 lbs3,039 lbs
18Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
191,3-Butadiene106-99-01,718 lbs0 lbs1,718 lbs
20Naphthalene91-20-31,611 lbs7 lbs1,641 lbs
21Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
22Cumene98-82-8797 lbs0 lbs803 lbs
23Carbon disulfide75-15-0484 lbs0 lbs484 lbs
24Polycyclic aromatic compoundsN590355 lbs55 lbs410 lbs
251,4-Dioxane123-91-1328 lbs0 lbs328 lbs
26Styrene100-42-5269 lbs0 lbs269 lbs
27Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0221 lbs0 lbs221 lbs
281,1,1,2-Tetrachloroethane630-20-6212 lbs0 lbs212 lbs
29Phenol108-95-2164 lbs8 lbs172 lbs
30Methanol67-56-1152 lbs0 lbs152 lbs
31Lead And Lead CompoundsN420128 lbs12 lbs140 lbs
32Zinc compoundsN98222 lbs32 lbs54 lbs
33Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
34Phenanthrene85-01-836 lbs0 lbs36 lbs
35Biphenyl92-52-433 lbs0 lbs33 lbs
36Mercury And Mercury CompoundsN45829 lbs0 lbs30 lbs
37Chlorine7782-50-525 lbs0 lbs25 lbs
38Dimethylamine124-40-323 lbs0 lbs23 lbs
39Benzo[g,h,i]perylene191-24-28 lbs5 lbs13 lbs
40Certain glycol ethersN23010 lbs0 lbs10 lbs
41Isoprene78-79-58 lbs0 lbs8 lbs
42Mercury7439-97-67 lbs0 lbs7 lbs
43Vinyl acetate108-05-45 lbs0 lbs5 lbs
44Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs2 lbs
45Acetaldehyde75-07-01 lbs0 lbs1 lbs
46Anthracene120-12-71 lbs0 lbs1 lbs
47Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs
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