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
11702 N H ST LA PORTE 77571
Building Size
4,044 sqft
Total structure area from HCAD building records.
Elevation
19.86 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: 9.86 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 86% 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)
3.04 million lbs
Extremely High
466.4x more than typical Houston property
≈ 152 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)
2.1 million lbs
Extremely High
435.7x 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)
942 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)3,042,643 lbs2,100,985 lbs941,658 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,159,925 lbs124,019 lbs0 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 86% 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, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ethylene, Vinyl acetate, Ammonia

View the full list of 52 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (52 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Methanol67-56-1958,818 lbs0 lbs1,217,818 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs911,682 lbs911,682 lbs
3Ethylene74-85-1362,526 lbs0 lbs362,526 lbs
4Vinyl acetate108-05-4141,735 lbs0 lbs279,345 lbs
5Ammonia7664-41-7105,663 lbs3,199 lbs108,862 lbs
6Xylene (mixed isomers)1330-20-754,281 lbs0 lbs68,626 lbs
7Formaldehyde50-00-063,808 lbs0 lbs63,808 lbs
8Hydroquinone123-31-942,495 lbs0 lbs57,435 lbs
9Propylene115-07-149,954 lbs0 lbs49,954 lbs
10n-Butyl alcohol71-36-349,206 lbs0 lbs49,206 lbs
11Toluene108-88-345,000 lbs0 lbs45,000 lbs
12Methyl isobutyl ketone108-10-136,313 lbs0 lbs36,313 lbs
13Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-033,058 lbs0 lbs33,058 lbs
14Cumene98-82-831,096 lbs0 lbs31,096 lbs
15Copper compoundsN1001 lbs84 lbs29,084 lbs
16Sodium nitrite7632-00-00 lbs26,012 lbs26,012 lbs
17Acetaldehyde75-07-016,053 lbs0 lbs22,283 lbs
18n-Hexane110-54-316,824 lbs0 lbs16,824 lbs
19Ethylene glycol107-21-116,765 lbs0 lbs16,765 lbs
20Chlorine7782-50-511,961 lbs0 lbs11,961 lbs
21Benzene71-43-210,536 lbs0 lbs10,536 lbs
22Styrene100-42-57,344 lbs0 lbs7,344 lbs
23Dimethylamine124-40-37,035 lbs0 lbs7,035 lbs
24Maleic anhydride108-31-65,569 lbs0 lbs5,569 lbs
25Dichloromethane75-09-25,437 lbs0 lbs5,437 lbs
26Acetonitrile75-05-85,326 lbs0 lbs5,326 lbs
27Chloroacetic acid79-11-84,175 lbs0 lbs4,175 lbs
28Acrylic acid79-10-73,532 lbs0 lbs3,532 lbs
29Methyl methacrylate80-62-63,435 lbs0 lbs3,435 lbs
30Mercury7439-97-60 lbs0 lbs2,200 lbs
31Phosgene75-44-51,958 lbs0 lbs1,958 lbs
32Aluminum oxide (fibrous forms)1344-28-11,750 lbs0 lbs1,750 lbs
33Ethyl chloroformate541-41-31,467 lbs0 lbs1,467 lbs
34Methyl chlorocarbonate79-22-11,449 lbs0 lbs1,449 lbs
35sec-Butyl alcohol78-92-21,434 lbs0 lbs1,434 lbs
36Ethylene oxide75-21-81,431 lbs0 lbs1,431 lbs
37Hydrogen fluoride7664-39-31,062 lbs0 lbs1,062 lbs
38Diphenylamine122-39-4997 lbs0 lbs997 lbs
39Manganese7439-96-5511 lbs282 lbs793 lbs
40Propylene oxide75-56-9371 lbs0 lbs371 lbs
41Naphthalene91-20-3245 lbs0 lbs245 lbs
42Ethylbenzene100-41-4216 lbs0 lbs216 lbs
43Hexazinone51235-04-20 lbs212 lbs212 lbs
44Nickel7440-02-00 lbs152 lbs152 lbs
45Chromium7440-47-345 lbs25 lbs70 lbs
46Methyl acrylate96-33-355 lbs0 lbs55 lbs
47N,N-Dimethylformamide68-12-234 lbs0 lbs34 lbs
48Nickel compoundsN4954 lbs3 lbs8 lbs
49Copper And Copper CompoundsN1000 lbs6 lbs6 lbs
50Butyl acrylate141-32-25 lbs0 lbs5 lbs
51Nickel And Nickel CompoundsN4952 lbs1 lbs3 lbs
52Methyl isocyanate624-83-91 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 33 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (33 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-155,804 lbs0 lbs1,551,578 lbs
2Aluminum oxide (fibrous forms)1344-28-1250 lbs0 lbs353,010 lbs
3Maleic anhydride108-31-61,569 lbs0 lbs134,889 lbs
4Vinyl acetate108-05-49,298 lbs0 lbs27,496 lbs
5Chloroacetic acid79-11-8476 lbs0 lbs20,694 lbs
6Propylene115-07-110,535 lbs0 lbs10,535 lbs
7Ethylene74-85-110,189 lbs0 lbs10,189 lbs
8Ammonia7664-41-78,690 lbs0 lbs8,916 lbs
9Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-06,255 lbs0 lbs6,255 lbs
10Formaldehyde50-00-03,559 lbs0 lbs5,799 lbs
11Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs5,055 lbs
12Hydroquinone123-31-94,862 lbs0 lbs4,862 lbs
13Methyl isobutyl ketone108-10-13,997 lbs0 lbs3,997 lbs
14sec-Butyl alcohol78-92-293 lbs0 lbs3,447 lbs
15Cumene98-82-82,611 lbs0 lbs2,611 lbs
16n-Butyl alcohol71-36-375 lbs0 lbs2,529 lbs
17Polycyclic aromatic compoundsN5900 lbs0 lbs1,652 lbs
18Acetaldehyde75-07-0504 lbs0 lbs1,147 lbs
19Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
20Chlorine7782-50-51,121 lbs0 lbs1,121 lbs
21Benzene71-43-21,090 lbs0 lbs1,090 lbs
22Ethylene oxide75-21-8420 lbs0 lbs420 lbs
23Methyl methacrylate80-62-6387 lbs0 lbs387 lbs
24Naphthalene91-20-3245 lbs0 lbs245 lbs
25Ethylbenzene100-41-4216 lbs0 lbs216 lbs
26Acrylic acid79-10-7186 lbs0 lbs192 lbs
27Ethyl chloroformate541-41-3120 lbs0 lbs120 lbs
28Styrene100-42-5116 lbs0 lbs116 lbs
29Diphenylamine122-39-4103 lbs0 lbs103 lbs
30Propylene oxide75-56-960 lbs0 lbs60 lbs
31Phosgene75-44-527 lbs0 lbs27 lbs
32Methyl chlorocarbonate79-22-113 lbs0 lbs13 lbs
33Ethylene glycol107-21-14 lbs0 lbs10 lbs

Explore More Properties