Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 3400 Penn City Rd, Houston, TX 77015

HCAD #0410320010147
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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 AE
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
3400 Penn City Rd, Houston, TX 77015
Elevation
9.71 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
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)
19.55 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
294.9 acres
100.0% 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
Special Flood Hazard Area (SFHA): Flood insurance required for federally backed mortgages
#2
Obtain an Elevation Certificate to determine accurate flood insurance premiums
#3
Simulation shows 0.1ft of flooding - mitigation measures recommended
#4
Consider elevating utilities, HVAC systems, and electrical panels above anticipated flood levels
#5
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#6
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
11.1th percentile
Property Pollution Ranking
High
Higher pollution than 89% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
6.28 millionlbs
Extremely High
963.3x more than typical Houston property
≈ 314 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
5.2 millionlbs
Extremely High
1077.5x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
1.09 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
19
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)6,284,620 lbs5,195,997 lbs1,088,623 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)614,844 lbs530,578 lbs75,267 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 89% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile.
📋
Top chemicals released near this property (past 10 years):
m-Cresol, 2,4-Dimethylphenol, p-Cresol, o-Cresol, Ethylene
View the full list of 72 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(72 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1m-Cresol108-39-445,935 lbs6,586 lbs5,666,444 lbs
22,4-Dimethylphenol105-67-913,055 lbs965 lbs4,229,319 lbs
3p-Cresol106-44-538,298 lbs3,292 lbs3,009,676 lbs
4o-Cresol95-48-727,446 lbs1,579 lbs1,767,181 lbs
5Ethylene74-85-11,557,991 lbs0 lbs1,557,991 lbs
6Phenol108-95-230,598 lbs3,108 lbs1,064,358 lbs
7Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
8Cumene98-82-8517,706 lbs1 lbs517,707 lbs
9n-Hexane110-54-3494,312 lbs51 lbs494,403 lbs
10Ethylene glycol107-21-1344,305 lbs0 lbs344,305 lbs
11Propylene115-07-1289,050 lbs0 lbs289,050 lbs
12Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0213,345 lbs0 lbs213,345 lbs
13Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
14Methanol67-56-1180,974 lbs7,563 lbs188,537 lbs
15Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
16Benzene71-43-2161,337 lbs3 lbs161,340 lbs
17Aluminum (fume or dust)7429-90-5133,040 lbs0 lbs133,050 lbs
18Chlorine7782-50-5101,816 lbs0 lbs101,821 lbs
19Acetaldehyde75-07-092,740 lbs3,956 lbs96,696 lbs
20Toluene108-88-364,018 lbs530 lbs64,584 lbs
21Ammonia7664-41-740,809 lbs6,158 lbs46,967 lbs
22Chlorodifluoromethane (HCFC-22)75-45-646,271 lbs0 lbs46,271 lbs
23Certain glycol ethersN23037,092 lbs0 lbs37,092 lbs
24Styrene100-42-532,913 lbs0 lbs32,913 lbs
25Hydrogen sulfide7783-06-431,340 lbs0 lbs31,340 lbs
26o-Toluidine95-53-429,521 lbs51 lbs30,113 lbs
27Chlorothalonil1897-45-629,974 lbs83 lbs30,057 lbs
28Isobutyraldehyde78-84-228,404 lbs0 lbs28,404 lbs
29Carbon disulfide75-15-027,720 lbs0 lbs27,720 lbs
30Butyraldehyde123-72-823,130 lbs0 lbs23,130 lbs
31Cyclohexane110-82-722,189 lbs51 lbs22,290 lbs
321,2,4-Trimethylbenzene95-63-618,569 lbs0 lbs18,569 lbs
33Zinc compoundsN98210,410 lbs6,866 lbs17,290 lbs
34Chloromethane74-87-315,422 lbs31 lbs15,478 lbs
35Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
36Chloroethane75-00-314,708 lbs41 lbs14,784 lbs
37Carbon tetrachloride56-23-514,345 lbs12 lbs14,358 lbs
38Diaminotoluene (mixed isomers)25376-45-812,695 lbs51 lbs12,797 lbs
39m-Xylene108-38-311,963 lbs54 lbs12,017 lbs
40Vanadium compoundsN7706,236 lbs2,153 lbs8,389 lbs
41Xylene (mixed isomers)1330-20-77,515 lbs0 lbs7,515 lbs
42Aniline62-53-36,824 lbs25 lbs7,119 lbs
43Biphenyl92-52-46,522 lbs15 lbs6,552 lbs
44n-Butyl alcohol71-36-34,032 lbs0 lbs4,032 lbs
45Phthalic anhydride85-44-93,545 lbs0 lbs3,545 lbs
46Hydrogen cyanide74-90-83,231 lbs0 lbs3,231 lbs
47Manganese compoundsN4502,054 lbs262 lbs2,316 lbs
48Manganese7439-96-51,668 lbs543 lbs2,211 lbs
49Chromium7440-47-31,182 lbs925 lbs2,106 lbs
50Maleic anhydride108-31-61,686 lbs0 lbs1,686 lbs
51Nickel7440-02-0974 lbs543 lbs1,517 lbs
52o-Xylene95-47-61,330 lbs0 lbs1,330 lbs
53Ethylbenzene100-41-41,281 lbs0 lbs1,281 lbs
541,3-Butadiene106-99-01,064 lbs0 lbs1,064 lbs
55Formaldehyde50-00-01,061 lbs0 lbs1,061 lbs
56Hexachlorobenzene118-74-11,002 lbs1 lbs1,003 lbs
57Chromium compounds (except for chromite ore mined in the Transvaal Region)N090410 lbs417 lbs828 lbs
58Nickel compoundsN495443 lbs250 lbs694 lbs
59Naphthalene91-20-3496 lbs0 lbs496 lbs
60Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
61Lead compoundsN420290 lbs17 lbs308 lbs
62Copper7440-50-8250 lbs0 lbs250 lbs
63Cobalt7440-48-4250 lbs0 lbs250 lbs
641,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
651,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
66Diphenylamine122-39-4126 lbs0 lbs126 lbs
67Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
68Lead And Lead CompoundsN42054 lbs16 lbs71 lbs
69Dioxin and dioxin-like compoundsN15039 lbs0 lbs39 lbs
70Lead7439-92-14 lbs20 lbs23 lbs
71Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
72Mercury7439-97-60 lbs0 lbs2 lbs
📋
Top chemicals released near this property (2024 only):
Ethylene, Ethylene glycol, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, Cumene
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)
1Ethylene74-85-1159,132 lbs0 lbs159,132 lbs
2Ethylene glycol107-21-1111,462 lbs0 lbs111,462 lbs
3Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
4Propylene115-07-157,757 lbs0 lbs57,757 lbs
5Cumene98-82-834,977 lbs0 lbs34,977 lbs
6Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-020,007 lbs0 lbs20,007 lbs
7Benzene71-43-218,400 lbs0 lbs18,400 lbs
8n-Hexane110-54-318,140 lbs5 lbs18,150 lbs
9Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
10Aluminum (fume or dust)7429-90-513,724 lbs0 lbs13,724 lbs
11Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
12Acetaldehyde75-07-08,300 lbs380 lbs8,680 lbs
13m-Cresol108-39-45,580 lbs416 lbs7,579 lbs
14Phenol108-95-26,849 lbs151 lbs7,377 lbs
152,4-Dimethylphenol105-67-91,591 lbs64 lbs7,241 lbs
16p-Cresol106-44-54,895 lbs208 lbs5,894 lbs
17Isobutyraldehyde78-84-24,431 lbs0 lbs4,431 lbs
18o-Cresol95-48-73,280 lbs103 lbs4,025 lbs
19o-Toluidine95-53-44,008 lbs5 lbs4,018 lbs
20Methanol67-56-13,330 lbs336 lbs3,666 lbs
21Hydrogen sulfide7783-06-42,619 lbs0 lbs2,619 lbs
22Butyraldehyde123-72-82,507 lbs0 lbs2,507 lbs
23Chloroethane75-00-32,102 lbs5 lbs2,107 lbs
24Cyclohexane110-82-72,080 lbs5 lbs2,090 lbs
251,2,4-Trimethylbenzene95-63-61,978 lbs0 lbs1,978 lbs
26Chloromethane74-87-31,938 lbs5 lbs1,943 lbs
27Carbon disulfide75-15-01,835 lbs0 lbs1,835 lbs
28Diaminotoluene (mixed isomers)25376-45-81,821 lbs5 lbs1,831 lbs
29Ammonia7664-41-71,819 lbs0 lbs1,819 lbs
30Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
31Zinc compoundsN982678 lbs476 lbs1,154 lbs
32Chlorine7782-50-5925 lbs0 lbs925 lbs
33n-Butyl alcohol71-36-3638 lbs0 lbs638 lbs
34Xylene (mixed isomers)1330-20-7477 lbs0 lbs477 lbs
351,3-Butadiene106-99-0295 lbs0 lbs295 lbs
36Manganese7439-96-5162 lbs86 lbs248 lbs
37Chromium7440-47-371 lbs144 lbs215 lbs
38Toluene108-88-3202 lbs0 lbs202 lbs
39Maleic anhydride108-31-6132 lbs0 lbs132 lbs
40Nickel7440-02-018 lbs86 lbs104 lbs
41Formaldehyde50-00-099 lbs0 lbs99 lbs
42Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-996 lbs0 lbs96 lbs
43Naphthalene91-20-386 lbs0 lbs86 lbs
44Diphenylamine122-39-423 lbs0 lbs23 lbs
45Lead And Lead CompoundsN4207 lbs0 lbs7 lbs
461,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
47Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs
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