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
1204 ROBINSON RD LA PORTE 77571
Building Size
3,422 sqft
Total structure area from HCAD building records.
Elevation
26.31 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: 16.31 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
High
Higher pollution than 89% 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)
5.37 million lbs
Extremely High
823.3x more than typical Houston property
≈ 269 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)
4.66 million lbs
Extremely High
966.1x 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)
713 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)5,371,331 lbs4,658,785 lbs712,546 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,151,772 lbs368,920 lbs66,615 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 15% most polluted).

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

Methanol, Vinyl acetate, Ethylene, Propylene, n-Hexane

View the full list of 31 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (31 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1861,097 lbs648,518 lbs1,509,615 lbs
2Vinyl acetate108-05-41,090,664 lbs5,684 lbs1,096,348 lbs
3Ethylene74-85-11,031,220 lbs0 lbs1,031,220 lbs
4Propylene115-07-1929,229 lbs0 lbs929,229 lbs
5n-Hexane110-54-3344,192 lbs0 lbs344,192 lbs
6Ammonia7664-41-7115,714 lbs7,555 lbs123,269 lbs
7Certain glycol ethersN23062,831 lbs0 lbs62,831 lbs
8Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs47,700 lbs47,700 lbs
9Xylene (mixed isomers)1330-20-743,144 lbs0 lbs43,144 lbs
10Methyl iodide74-88-437,993 lbs0 lbs37,993 lbs
11Formaldehyde50-00-036,646 lbs0 lbs36,646 lbs
12Chlorine7782-50-521,527 lbs1,928 lbs23,455 lbs
13Acetaldehyde75-07-022,201 lbs0 lbs22,201 lbs
14Ethylene glycol107-21-116,751 lbs0 lbs16,751 lbs
15Chlorobenzene108-90-716,036 lbs0 lbs16,036 lbs
16Boron trifluoride7637-07-214,190 lbs0 lbs14,190 lbs
17Zinc compoundsN9824,689 lbs1,141 lbs5,830 lbs
18Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
19Mercury7439-97-60 lbs0 lbs2,200 lbs
20Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
21Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
22Ethylbenzene100-41-4316 lbs3 lbs319 lbs
23DiisocyanatesN120275 lbs0 lbs275 lbs
24Naphthalene91-20-3245 lbs8 lbs253 lbs
251,3-Butadiene106-99-0242 lbs0 lbs242 lbs
26n-Butyl alcohol71-36-387 lbs0 lbs87 lbs
27sec-Butyl alcohol78-92-268 lbs0 lbs68 lbs
28Chromium7440-47-345 lbs0 lbs45 lbs
29Benzene71-43-231 lbs5 lbs36 lbs
30Toluene108-88-313 lbs3 lbs16 lbs
31Lead7439-92-10 lbs1 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Aluminum oxide (fibrous forms), Maleic anhydride, Vinyl acetate, Propylene

View the full list of 28 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (28 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-167,101 lbs64,000 lbs1,302,316 lbs
2Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
3Maleic anhydride108-31-61,569 lbs0 lbs134,889 lbs
4Vinyl acetate108-05-484,880 lbs410 lbs99,153 lbs
5Propylene115-07-188,054 lbs0 lbs88,054 lbs
6Ethylene74-85-180,115 lbs0 lbs80,115 lbs
7Ammonia7664-41-79,091 lbs37 lbs47,520 lbs
8n-Hexane110-54-324,235 lbs0 lbs24,235 lbs
9Formaldehyde50-00-03,559 lbs0 lbs5,799 lbs
10Polycyclic aromatic compoundsN5900 lbs0 lbs3,621 lbs
11Certain glycol ethersN2302,700 lbs0 lbs2,700 lbs
12Chlorine7782-50-52,260 lbs0 lbs2,260 lbs
13Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,100 lbs2,100 lbs
14Methyl iodide74-88-41,600 lbs0 lbs1,600 lbs
15Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
16Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
17Zinc compoundsN982425 lbs60 lbs915 lbs
18Lead7439-92-10 lbs1 lbs354 lbs
19Ethylbenzene100-41-4316 lbs0 lbs316 lbs
20Naphthalene91-20-3245 lbs6 lbs251 lbs
21Acetaldehyde75-07-0150 lbs0 lbs155 lbs
22Benzo[g,h,i]perylene191-24-20 lbs0 lbs38 lbs
231,3-Butadiene106-99-08 lbs0 lbs8 lbs
24Toluene108-88-37 lbs1 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

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