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
1114 HOFFMAN ST HOUSTON 77020
Building Size
1,301 sqft
Total structure area from HCAD building records.
Elevation
41.77 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: 31.77 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 78% 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)
652 thousand lbs
Very High
99.9x more than typical Houston property
≈ 33 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)
652 thousand lbs
Extremely High
135.1x 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)
522 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)652,034 lbs651,512 lbs522 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)111,997 lbs62,565 lbs74 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 78% 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), Styrene, Nitric acid

View the full list of 41 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (41 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Zinc compoundsN982176,613 lbs0 lbs176,613 lbs
2n-Hexane110-54-3125,432 lbs0 lbs125,432 lbs
3Xylene (mixed isomers)1330-20-7101,920 lbs0 lbs101,920 lbs
4Styrene100-42-578,090 lbs0 lbs78,090 lbs
5Nitric acid7697-37-235,489 lbs0 lbs35,489 lbs
6n-Butyl alcohol71-36-333,617 lbs0 lbs33,617 lbs
7Toluene108-88-324,730 lbs0 lbs25,903 lbs
8Phenol108-95-224,642 lbs0 lbs24,642 lbs
9Ethylbenzene100-41-415,965 lbs0 lbs15,965 lbs
101,2,4-Trimethylbenzene95-63-68,648 lbs0 lbs8,648 lbs
11Hydrogen sulfide7783-06-46,912 lbs0 lbs6,912 lbs
12Methyl isobutyl ketone108-10-13,355 lbs0 lbs3,355 lbs
13Lead compoundsN4203,123 lbs54 lbs3,177 lbs
14Cyclohexane110-82-72,389 lbs0 lbs2,389 lbs
15Copper compoundsN1002,022 lbs1 lbs2,023 lbs
16Formaldehyde50-00-01,893 lbs0 lbs1,893 lbs
17Lead And Lead CompoundsN4201,552 lbs0 lbs1,552 lbs
18Polycyclic aromatic compoundsN5901,170 lbs1 lbs1,170 lbs
19Ethylene glycol107-21-1856 lbs0 lbs856 lbs
20Propylene115-07-1810 lbs0 lbs810 lbs
21Manganese7439-96-5168 lbs363 lbs531 lbs
22Certain glycol ethersN230402 lbs0 lbs402 lbs
23Chloroacetic acid79-11-8330 lbs0 lbs330 lbs
24Methyl methacrylate80-62-6265 lbs0 lbs265 lbs
25Methanol67-56-1255 lbs0 lbs255 lbs
26Chromium compounds (except for chromite ore mined in the Transvaal Region)N090208 lbs15 lbs224 lbs
27Benzo[g,h,i]perylene191-24-2221 lbs0 lbs221 lbs
28Naphthalene91-20-3162 lbs0 lbs162 lbs
29DiisocyanatesN120101 lbs4 lbs105 lbs
30Nickel7440-02-024 lbs41 lbs65 lbs
31Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09051 lbs1 lbs52 lbs
32Chromium7440-47-319 lbs12 lbs35 lbs
33Aluminum (fume or dust)7429-90-524 lbs0 lbs24 lbs
34Lead7439-92-10 lbs24 lbs24 lbs
35Manganese compoundsN45016 lbs0 lbs16 lbs
36Nitrate compounds (water dissociable; reportable only when in aqueous solution)N51115 lbs0 lbs15 lbs
37Nickel compoundsN49513 lbs0 lbs13 lbs
38Copper And Copper CompoundsN10010 lbs0 lbs10 lbs
39Copper7440-50-80 lbs6 lbs6 lbs
40Cobalt7440-48-40 lbs0 lbs4 lbs
41Molybdenum trioxide1313-27-51 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 16 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (16 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Zinc compoundsN9829,014 lbs0 lbs20,571 lbs
2Manganese7439-96-50 lbs41 lbs19,987 lbs
3Xylene (mixed isomers)1330-20-717,453 lbs0 lbs17,453 lbs
4n-Hexane110-54-312,290 lbs0 lbs12,290 lbs
5Toluene108-88-311,886 lbs0 lbs11,886 lbs
6Styrene100-42-59,639 lbs0 lbs9,639 lbs
7Nitric acid7697-37-2750 lbs0 lbs9,441 lbs
8Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0906 lbs0 lbs6,071 lbs
9Nickel7440-02-00 lbs31 lbs2,080 lbs
101,2,4-Trimethylbenzene95-63-61,210 lbs0 lbs1,210 lbs
11Lead And Lead CompoundsN420161 lbs0 lbs1,152 lbs
12Polycyclic aromatic compoundsN590115 lbs0 lbs125 lbs
13Lead7439-92-10 lbs3 lbs48 lbs
14Benzo[g,h,i]perylene191-24-221 lbs0 lbs24 lbs
15Methyl methacrylate80-62-610 lbs0 lbs10 lbs
16Chloroacetic acid79-11-810 lbs0 lbs10 lbs

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