Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1311 4th St, Galena Park, Tx 77547

HCAD #0621560270001
🧭Jump to Section
🌍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
1311 4th St, Galena Park, Tx 77547
Building Size
2,640sqft
Total structure area from HCAD building records.
Elevation
26.07 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)
35.92 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
292.7 acres
99.2% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$88,696
Based on HCAD building value of $136,456.
Depth-Damage (Neighborhood)
$114,337
Based on neighborhood replacement cost.
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
5.9th 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)
20.86 millionlbs
Extremely High
3197.6x more than typical Houston property
≈ 1.0K dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
7.83 millionlbs
Extremely High
1623.2x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
13.03 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
17
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)20,862,119 lbs7,827,557 lbs13,034,562 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,557,727 lbs504,056 lbs2,052,822 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, n-Hexane, Propylene, Xylene (mixed isomers)
View the full list of 60 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(60 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
3n-Hexane110-54-31,203,157 lbs9 lbs1,203,656 lbs
4Propylene115-07-1519,890 lbs0 lbs519,890 lbs
5Xylene (mixed isomers)1330-20-7505,276 lbs741 lbs508,448 lbs
6Ammonia7664-41-7393,633 lbs8,000 lbs401,633 lbs
7Toluene108-88-3389,990 lbs225 lbs391,183 lbs
8Ethylene74-85-1388,119 lbs0 lbs388,119 lbs
9Benzene71-43-2342,942 lbs133 lbs343,658 lbs
10Hydrogen sulfide7783-06-4261,896 lbs3,527 lbs265,424 lbs
111,3-Butadiene106-99-0257,284 lbs0 lbs257,284 lbs
12Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9256,810 lbs0 lbs256,810 lbs
13Cyclohexane110-82-7161,507 lbs0 lbs162,276 lbs
14n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
15Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
16Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
17Ethylbenzene100-41-481,708 lbs109 lbs82,454 lbs
18Methanol67-56-168,150 lbs0 lbs68,150 lbs
191,2,4-Trimethylbenzene95-63-631,181 lbs0 lbs31,670 lbs
20Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
21Naphthalene91-20-324,431 lbs3 lbs25,769 lbs
22Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
23Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
24Isoprene78-79-513,272 lbs0 lbs13,272 lbs
25Cumene98-82-811,194 lbs0 lbs11,383 lbs
26Carbon disulfide75-15-08,557 lbs0 lbs8,557 lbs
27Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
28Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
29Biphenyl92-52-45,161 lbs0 lbs5,502 lbs
30Ethylene glycol107-21-15,255 lbs0 lbs5,264 lbs
31Polycyclic aromatic compoundsN5904,540 lbs115 lbs4,856 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
35Styrene100-42-53,310 lbs0 lbs3,310 lbs
36Zinc compoundsN982219 lbs1,181 lbs2,891 lbs
37Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
38Nickel compoundsN495654 lbs489 lbs1,143 lbs
39Phenanthrene85-01-8937 lbs0 lbs937 lbs
40Vanadium compoundsN77079 lbs509 lbs588 lbs
41Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0461 lbs0 lbs461 lbs
42Lead7439-92-1260 lbs126 lbs386 lbs
43Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
44Chlorine7782-50-5268 lbs0 lbs268 lbs
45Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
46Mercury compoundsN458197 lbs1 lbs199 lbs
47Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
48Cobalt compoundsN096131 lbs24 lbs155 lbs
49Lead And Lead CompoundsN420142 lbs12 lbs154 lbs
50Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
51Lead compoundsN42050 lbs57 lbs107 lbs
52Mercury7439-97-6106 lbs0 lbs106 lbs
53Certain glycol ethersN23080 lbs0 lbs80 lbs
54Anthracene120-12-775 lbs0 lbs75 lbs
55Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
56C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
57Antimony compoundsN01038 lbs0 lbs38 lbs
58Nickel7440-02-035 lbs0 lbs35 lbs
59Benzo[g,h,i]perylene191-24-216 lbs7 lbs24 lbs
60tert-Butyl alcohol75-65-07 lbs0 lbs7 lbs
📋
Top chemicals released near this property (2024 only):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, n-Hexane, Xylene (mixed isomers), Ammonia
View the full list of 39 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(39 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
3n-Hexane110-54-344,312 lbs0 lbs44,416 lbs
4Xylene (mixed isomers)1330-20-739,453 lbs28 lbs39,764 lbs
5Ammonia7664-41-738,046 lbs1,027 lbs39,073 lbs
61,3-Butadiene106-99-034,065 lbs0 lbs34,065 lbs
7Toluene108-88-327,692 lbs14 lbs27,811 lbs
8Ozone10028-15-625,701 lbs0 lbs25,701 lbs
9Ethylene74-85-124,482 lbs0 lbs24,482 lbs
10Benzene71-43-224,266 lbs8 lbs24,305 lbs
11Hydrogen sulfide7783-06-414,468 lbs0 lbs14,468 lbs
12Propylene115-07-114,156 lbs0 lbs14,156 lbs
13Cyclohexane110-82-711,951 lbs0 lbs11,969 lbs
14Diethanolamine111-42-210,092 lbs0 lbs10,092 lbs
15Ethylbenzene100-41-45,519 lbs16 lbs5,605 lbs
161,2,4-Trimethylbenzene95-63-62,830 lbs0 lbs3,039 lbs
17Isoprene78-79-52,371 lbs0 lbs2,371 lbs
18Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
19Naphthalene91-20-31,609 lbs0 lbs1,632 lbs
20Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
21Cumene98-82-8797 lbs0 lbs803 lbs
22Ethylene glycol107-21-1500 lbs0 lbs500 lbs
23Polycyclic aromatic compoundsN590354 lbs15 lbs369 lbs
24Styrene100-42-5269 lbs0 lbs269 lbs
25Carbon disulfide75-15-0243 lbs0 lbs243 lbs
26Phenol108-95-2164 lbs8 lbs172 lbs
27Lead And Lead CompoundsN42096 lbs7 lbs104 lbs
28Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9101 lbs0 lbs101 lbs
29Zinc compoundsN98222 lbs32 lbs54 lbs
30Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
31Phenanthrene85-01-836 lbs0 lbs36 lbs
32Biphenyl92-52-433 lbs0 lbs33 lbs
33Mercury And Mercury CompoundsN45829 lbs0 lbs30 lbs
34Chlorine7782-50-525 lbs0 lbs25 lbs
35Benzo[g,h,i]perylene191-24-28 lbs5 lbs13 lbs
36Certain glycol ethersN23010 lbs0 lbs10 lbs
37Mercury7439-97-67 lbs0 lbs7 lbs
38Anthracene120-12-71 lbs0 lbs1 lbs
39Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs
Loading property data...
🏘️Explore More Properties