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
7225 NAVIGATION BLVD HOUSTON 77011
Elevation
30.4 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
Vacant lot (no building data). No structure to calculate damage for.
Depth-Damage Estimate (Neighborhood Comparison)
$0
Vacant lot (no building data). No structure to calculate damage for.
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: 20.4 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
Moderate
Higher pollution than 75% 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)
465 thousand lbs
Very High
71.2x more than typical Houston property
≈ 23 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)
464 thousand lbs
Very High
96.2x 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)
623 lbs
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)464,669 lbs464,046 lbs623 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)80,959 lbs47,326 lbs22 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 75% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile (top 25% most polluted).

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

Zinc compounds, n-Hexane, Xylene (mixed isomers), Nitric acid, Toluene

View the full list of 30 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (30 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Zinc compoundsN982176,619 lbs26 lbs176,645 lbs
2n-Hexane110-54-3125,432 lbs0 lbs125,432 lbs
3Xylene (mixed isomers)1330-20-766,977 lbs0 lbs66,977 lbs
4Nitric acid7697-37-235,886 lbs0 lbs35,886 lbs
5Toluene108-88-331,681 lbs0 lbs31,681 lbs
61,2,4-Trimethylbenzene95-63-68,648 lbs0 lbs8,648 lbs
7Manganese7439-96-55,230 lbs359 lbs5,589 lbs
8Lead compoundsN4203,031 lbs0 lbs3,031 lbs
9Cyclohexane110-82-72,389 lbs0 lbs2,389 lbs
10Copper compoundsN1002,021 lbs0 lbs2,021 lbs
11Lead And Lead CompoundsN4201,553 lbs0 lbs1,553 lbs
12Ethylene glycol107-21-1856 lbs0 lbs856 lbs
13Propylene115-07-1810 lbs0 lbs810 lbs
14Polycyclic aromatic compoundsN590749 lbs1 lbs758 lbs
15Lead7439-92-1225 lbs215 lbs439 lbs
16Certain glycol ethersN230402 lbs0 lbs402 lbs
17Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
18Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
19Methanol67-56-1255 lbs0 lbs255 lbs
20Ethylbenzene100-41-4217 lbs0 lbs218 lbs
21Styrene100-42-5162 lbs0 lbs163 lbs
22Naphthalene91-20-3117 lbs0 lbs118 lbs
23Chromium compounds (except for chromite ore mined in the Transvaal Region)N09086 lbs0 lbs86 lbs
24Nickel7440-02-036 lbs4 lbs39 lbs
25Nickel compoundsN49522 lbs0 lbs22 lbs
26Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09019 lbs0 lbs19 lbs
27Benzo[g,h,i]perylene191-24-215 lbs0 lbs15 lbs
28Chromium7440-47-33 lbs12 lbs15 lbs
29Copper And Copper CompoundsN10010 lbs0 lbs10 lbs
30Copper7440-50-80 lbs6 lbs6 lbs

Top chemicals released near this property (2024 only):

Zinc compounds, n-Hexane, Xylene (mixed isomers), Toluene, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)

View the full list of 12 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (12 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Zinc compoundsN9829,014 lbs0 lbs20,571 lbs
2n-Hexane110-54-312,290 lbs0 lbs12,290 lbs
3Xylene (mixed isomers)1330-20-711,930 lbs0 lbs11,930 lbs
4Toluene108-88-311,886 lbs0 lbs11,886 lbs
5Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs11,416 lbs
6Nitric acid7697-37-2750 lbs0 lbs9,441 lbs
7Lead And Lead CompoundsN420161 lbs0 lbs2,050 lbs
81,2,4-Trimethylbenzene95-63-61,210 lbs0 lbs1,210 lbs
9Lead7439-92-120 lbs22 lbs87 lbs
10Polycyclic aromatic compoundsN59040 lbs0 lbs58 lbs
11Methyl methacrylate80-62-610 lbs0 lbs10 lbs
12Chloroacetic acid79-11-810 lbs0 lbs10 lbs

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