Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 1241 Underwood Rd, La Porte, TX 77571

HCAD #0231390000369
🧭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
1241 Underwood Rd, La Porte, TX 77571
Elevation
27.25 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)
37.10 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
150.8 acres
51.1% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$1,317,015
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
9.4th percentile
Property Pollution Ranking
Very High
Higher pollution than 91% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
9.42 millionlbs
Extremely High
1443.2x more than typical Houston property
≈ 471 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
3.63 millionlbs
Extremely High
753.1x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
5.78 millionlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
14
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)9,415,621 lbs3,631,940 lbs5,783,681 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)886,853 lbs324,736 lbs562,117 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 10-19th percentile.
📋
Top chemicals released near this property (past 10 years):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Vinyl acetate, Propylene, Ethylene, Methanol
View the full list of 33 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(33 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs5,347,896 lbs5,347,896 lbs
2Vinyl acetate108-05-4988,000 lbs5,684 lbs993,684 lbs
3Propylene115-07-1901,685 lbs0 lbs901,685 lbs
4Ethylene74-85-1749,327 lbs0 lbs749,327 lbs
5Methanol67-56-1159,400 lbs419,810 lbs579,210 lbs
6n-Hexane110-54-3440,919 lbs0 lbs440,919 lbs
7Ammonia7664-41-7112,574 lbs7,555 lbs120,129 lbs
8Certain glycol ethersN23063,696 lbs0 lbs63,696 lbs
9Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
10Methyl iodide74-88-437,993 lbs0 lbs37,993 lbs
11Acetaldehyde75-07-022,191 lbs0 lbs22,191 lbs
12Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
13Chlorobenzene108-90-716,036 lbs0 lbs16,036 lbs
14Chlorine7782-50-513,105 lbs1,323 lbs14,428 lbs
15Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
16Chloroethane75-00-313,375 lbs0 lbs13,375 lbs
17Cyclohexane110-82-712,948 lbs0 lbs12,948 lbs
18Zinc compoundsN9826,213 lbs1,393 lbs7,606 lbs
19Toluene108-88-35,891 lbs3 lbs5,894 lbs
20Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
21DiisocyanatesN1204,276 lbs0 lbs4,276 lbs
22Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
23Isoprene78-79-5923 lbs0 lbs923 lbs
24Aluminum (fume or dust)7429-90-5462 lbs0 lbs462 lbs
25Chloromethane74-87-3326 lbs0 lbs326 lbs
26Ethylbenzene100-41-4316 lbs3 lbs319 lbs
27Nitric acid7697-37-2260 lbs0 lbs260 lbs
28Naphthalene91-20-3245 lbs8 lbs253 lbs
29Benzene71-43-231 lbs5 lbs36 lbs
30n-Butyl alcohol71-36-328 lbs0 lbs28 lbs
311,3-Butadiene106-99-025 lbs0 lbs25 lbs
32sec-Butyl alcohol78-92-221 lbs0 lbs21 lbs
33Lead7439-92-10 lbs1 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, Methanol, Vinyl acetate, Ethylene
View the full list of 29 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(29 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs497,579 lbs497,579 lbs
2Propylene115-07-188,054 lbs0 lbs88,054 lbs
3Methanol67-56-123,000 lbs64,000 lbs87,000 lbs
4Vinyl acetate108-05-478,000 lbs410 lbs78,410 lbs
5Ethylene74-85-174,690 lbs0 lbs74,690 lbs
6n-Hexane110-54-333,853 lbs0 lbs33,853 lbs
7Ammonia7664-41-79,091 lbs37 lbs9,128 lbs
8Certain glycol ethersN2303,026 lbs0 lbs3,026 lbs
9Chlorine7782-50-52,100 lbs0 lbs2,100 lbs
10DiisocyanatesN1201,843 lbs0 lbs1,843 lbs
11Methyl iodide74-88-41,600 lbs0 lbs1,600 lbs
12Maleic anhydride108-31-61,569 lbs0 lbs1,569 lbs
13Cyclohexane110-82-71,566 lbs0 lbs1,566 lbs
14Chloroethane75-00-31,429 lbs0 lbs1,429 lbs
15Toluene108-88-31,379 lbs1 lbs1,380 lbs
16Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
17Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
18Zinc compoundsN982426 lbs83 lbs509 lbs
19Ethylbenzene100-41-4316 lbs0 lbs316 lbs
20Naphthalene91-20-3245 lbs6 lbs251 lbs
21Acetaldehyde75-07-0140 lbs0 lbs140 lbs
22Aluminum (fume or dust)7429-90-526 lbs0 lbs26 lbs
23Nitric acid7697-37-220 lbs0 lbs20 lbs
241,3-Butadiene106-99-08 lbs0 lbs8 lbs
25n-Butyl alcohol71-36-37 lbs0 lbs7 lbs
26sec-Butyl alcohol78-92-25 lbs0 lbs5 lbs
27Benzene71-43-25 lbs1 lbs5 lbs
28Ethylene glycol107-21-11 lbs0 lbs1 lbs
29Lead7439-92-10 lbs1 lbs1 lbs
Loading property data...
🏘️Explore More Properties