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
3402 BROADWAY ST 1 HOUSTON 77017
Elevation
32.03 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: 22.03 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)
5.39 million lbs
Extremely High
826.2x more than typical Houston property
≈ 270 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)
5.28 million lbs
Extremely High
1095.1x 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)
109 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)5,390,112 lbs5,281,078 lbs109,034 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)409,140 lbs379,092 lbs15,448 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):

Styrene, Ammonia, Propylene, 1,3-Butadiene, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)

View the full list of 48 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (48 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Styrene100-42-51,723,771 lbs7,271 lbs1,731,042 lbs
2Ammonia7664-41-71,411,439 lbs29,897 lbs1,441,336 lbs
3Propylene115-07-1757,373 lbs0 lbs757,373 lbs
41,3-Butadiene106-99-0435,764 lbs1 lbs435,765 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9376,938 lbs0 lbs376,938 lbs
6Methyl tert-butyl ether1634-04-4267,534 lbs0 lbs267,534 lbs
7Ethylene74-85-1167,323 lbs0 lbs167,323 lbs
8Methanol67-56-157,515 lbs39,325 lbs96,841 lbs
9N,N-Dimethylformamide68-12-222,161 lbs88 lbs22,249 lbs
10Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs21,954 lbs21,954 lbs
11Benzene71-43-216,925 lbs363 lbs17,288 lbs
12tert-Butyl alcohol75-65-015,278 lbs0 lbs15,278 lbs
13n-Hexane110-54-312,807 lbs0 lbs12,807 lbs
14Sodium nitrite7632-00-00 lbs9,470 lbs9,470 lbs
15Hydrogen sulfide7783-06-46,306 lbs0 lbs6,306 lbs
16Xylene (mixed isomers)1330-20-72,947 lbs0 lbs2,947 lbs
17Vinyl acetate108-05-41,608 lbs0 lbs1,608 lbs
18Toluene108-88-31,278 lbs69 lbs1,347 lbs
19Acetaldehyde75-07-01,011 lbs0 lbs1,011 lbs
20Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0999 lbs0 lbs999 lbs
21Lead7439-92-1397 lbs44 lbs442 lbs
221,1,1,2-Tetrachloroethane630-20-6434 lbs0 lbs434 lbs
23Polycyclic aromatic compoundsN5903 lbs410 lbs413 lbs
24Carbon disulfide75-15-0351 lbs0 lbs351 lbs
25Ethylbenzene100-41-4205 lbs59 lbs264 lbs
26Naphthalene91-20-3146 lbs72 lbs218 lbs
27Chlorine7782-50-5120 lbs0 lbs120 lbs
28Dimethylamine124-40-390 lbs0 lbs90 lbs
29Lead And Lead CompoundsN42063 lbs10 lbs73 lbs
30Vanadium compoundsN77065 lbs0 lbs65 lbs
31Isoprene78-79-560 lbs0 lbs60 lbs
32Boron trifluoride7637-07-236 lbs0 lbs36 lbs
33Allyl alcohol107-18-634 lbs0 lbs34 lbs
34Methoxone sodium salt3653-48-320 lbs0 lbs20 lbs
35Triethylamine121-44-817 lbs0 lbs17 lbs
36Acrolein107-02-813 lbs0 lbs13 lbs
37Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
38Hydroquinone123-31-99 lbs0 lbs9 lbs
39Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
40Diaminotoluene (mixed isomers)25376-45-84 lbs0 lbs4 lbs
41Mercury compoundsN4583 lbs1 lbs4 lbs
42Pyridine110-86-13 lbs0 lbs3 lbs
43Chloroethane75-00-32 lbs0 lbs2 lbs
44p-Cresol106-44-52 lbs0 lbs2 lbs
45Ethylene glycol107-21-11 lbs0 lbs1 lbs
46Trichloroethylene79-01-61 lbs0 lbs1 lbs
472,4-Diaminotoluene95-80-71 lbs0 lbs1 lbs
48Cyclohexane110-82-71 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Styrene, Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Methyl tert-butyl ether, 1,3-Butadiene

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)
1Styrene100-42-5130,675 lbs291 lbs130,967 lbs
2Ammonia7664-41-7101,857 lbs78 lbs101,934 lbs
3Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-950,698 lbs0 lbs50,698 lbs
4Methyl tert-butyl ether1634-04-418,336 lbs0 lbs31,624 lbs
51,3-Butadiene106-99-030,971 lbs0 lbs30,971 lbs
6Propylene115-07-124,891 lbs0 lbs24,891 lbs
7Methanol67-56-17,001 lbs14,541 lbs22,144 lbs
8Ethylene74-85-18,214 lbs0 lbs8,214 lbs
9N,N-Dimethylformamide68-12-21,641 lbs0 lbs1,842 lbs
10Benzene71-43-21,100 lbs110 lbs1,670 lbs
11n-Hexane110-54-31,106 lbs0 lbs1,106 lbs
12tert-Butyl alcohol75-65-01,021 lbs0 lbs1,021 lbs
13Hydrogen sulfide7783-06-4592 lbs0 lbs592 lbs
14Sodium nitrite7632-00-00 lbs371 lbs371 lbs
15Carbon disulfide75-15-0241 lbs0 lbs241 lbs
16Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0221 lbs0 lbs221 lbs
171,1,1,2-Tetrachloroethane630-20-6212 lbs0 lbs212 lbs
18Toluene108-88-3110 lbs4 lbs146 lbs
19Xylene (mixed isomers)1330-20-7124 lbs0 lbs134 lbs
20Polycyclic aromatic compoundsN5901 lbs40 lbs41 lbs
21Lead And Lead CompoundsN42031 lbs5 lbs36 lbs
22Dimethylamine124-40-323 lbs0 lbs23 lbs
23Ethylbenzene100-41-45 lbs1 lbs12 lbs
24Naphthalene91-20-32 lbs7 lbs9 lbs
25Isoprene78-79-58 lbs0 lbs8 lbs
26Vinyl acetate108-05-45 lbs0 lbs5 lbs
27Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs3 lbs
28Boron trifluoride7637-07-21 lbs0 lbs1 lbs
29Acetaldehyde75-07-01 lbs0 lbs1 lbs

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