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
530 WITTER ST PASADENA 77506
Elevation
21.45 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: 11.45 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)
6.02 million lbs
Extremely High
922.0x more than typical Houston property
≈ 301 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)
5.97 million lbs
Extremely High
1238.2x 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)
44 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)6,015,410 lbs5,971,261 lbs44,149 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)433,870 lbs356,492 lbs954 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):

Ethylene, n-Hexane, Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Methanol

View the full list of 58 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (58 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,303,858 lbs0 lbs1,303,858 lbs
2n-Hexane110-54-31,180,670 lbs179 lbs1,181,333 lbs
3Ammonia7664-41-7828,361 lbs33,581 lbs861,942 lbs
4Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9528,487 lbs0 lbs528,487 lbs
5Methanol67-56-1333,464 lbs0 lbs333,464 lbs
6Propylene115-07-1271,756 lbs0 lbs271,756 lbs
7Xylene (mixed isomers)1330-20-7236,260 lbs147 lbs238,817 lbs
81,3-Butadiene106-99-0232,400 lbs0 lbs232,401 lbs
9Hydrogen cyanide74-90-8213,734 lbs0 lbs213,734 lbs
10Toluene108-88-3189,666 lbs60 lbs190,679 lbs
11n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
12Benzene71-43-2114,006 lbs53 lbs114,632 lbs
13Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
14Ethylbenzene100-41-446,463 lbs77 lbs47,171 lbs
15Hydrogen sulfide7783-06-437,772 lbs0 lbs37,773 lbs
161,2,4-Trimethylbenzene95-63-632,662 lbs105 lbs33,245 lbs
17Styrene100-42-532,969 lbs0 lbs32,969 lbs
18Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
19Cyclohexane110-82-729,731 lbs0 lbs30,491 lbs
20Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
21Naphthalene91-20-315,992 lbs21 lbs17,340 lbs
22Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
23Isoprene78-79-513,272 lbs0 lbs13,272 lbs
24Zinc compoundsN9822,208 lbs6,916 lbs9,124 lbs
25Cumene98-82-87,719 lbs10 lbs7,917 lbs
26Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
27Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
28Ethylene glycol107-21-15,553 lbs0 lbs5,553 lbs
29Biphenyl92-52-44,816 lbs0 lbs5,138 lbs
30Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
31Formaldehyde50-00-02,284 lbs0 lbs2,284 lbs
32Manganese7439-96-51,738 lbs543 lbs2,281 lbs
33Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
34Chromium7440-47-31,222 lbs925 lbs2,146 lbs
35Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
36Nickel7440-02-01,094 lbs543 lbs1,637 lbs
37Formic acid64-18-61,406 lbs0 lbs1,406 lbs
38Manganese compoundsN450990 lbs262 lbs1,252 lbs
39Chromium compounds (except for chromite ore mined in the Transvaal Region)N090411 lbs417 lbs828 lbs
40Phenol108-95-2815 lbs0 lbs815 lbs
41Nickel compoundsN495443 lbs250 lbs694 lbs
42Diethanolamine111-42-2600 lbs0 lbs600 lbs
43Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
44Chlorine7782-50-5273 lbs0 lbs273 lbs
45Cobalt7440-48-4250 lbs0 lbs250 lbs
46Aluminum (fume or dust)7429-90-5250 lbs0 lbs250 lbs
47Copper7440-50-8250 lbs0 lbs250 lbs
48Certain glycol ethersN23092 lbs0 lbs92 lbs
49Polycyclic aromatic compoundsN59047 lbs2 lbs49 lbs
50C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
51Anthracene120-12-731 lbs0 lbs31 lbs
52Lead compoundsN4204 lbs27 lbs30 lbs
53Lead And Lead CompoundsN4203 lbs27 lbs30 lbs
54Mercury7439-97-630 lbs0 lbs30 lbs
55Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
56Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
57Benzo[g,h,i]perylene191-24-23 lbs0 lbs3 lbs
58Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Ammonia, 1,3-Butadiene, Zinc compounds, n-Hexane

View the full list of 41 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (41 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1129,645 lbs0 lbs129,645 lbs
2Ammonia7664-41-789,692 lbs93 lbs117,230 lbs
31,3-Butadiene106-99-033,626 lbs0 lbs33,626 lbs
4Zinc compoundsN982355 lbs481 lbs28,303 lbs
5n-Hexane110-54-322,511 lbs0 lbs22,621 lbs
6Methanol67-56-115,730 lbs0 lbs20,533 lbs
7Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,341 lbs0 lbs17,341 lbs
8Xylene (mixed isomers)1330-20-711,981 lbs23 lbs12,383 lbs
9Toluene108-88-39,336 lbs13 lbs11,330 lbs
10Vanadium compoundsN7700 lbs0 lbs6,689 lbs
11Benzene71-43-26,125 lbs6 lbs6,245 lbs
12Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
131,2,4-Trimethylbenzene95-63-63,259 lbs0 lbs3,471 lbs
14Isoprene78-79-52,371 lbs0 lbs2,371 lbs
15Formaldehyde50-00-0255 lbs0 lbs2,348 lbs
16Ethylbenzene100-41-41,882 lbs15 lbs1,972 lbs
17Formic acid64-18-6189 lbs0 lbs1,968 lbs
18Propylene115-07-11,202 lbs0 lbs1,202 lbs
19Lead And Lead CompoundsN4201 lbs6 lbs1,179 lbs
20Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
21Hydrogen sulfide7783-06-4923 lbs0 lbs923 lbs
22Dimethylamine124-40-3864 lbs0 lbs884 lbs
23Naphthalene91-20-3662 lbs1 lbs691 lbs
24Cyclohexane110-82-7649 lbs0 lbs667 lbs
25Ethylene glycol107-21-1529 lbs0 lbs549 lbs
26Lead compoundsN4200 lbs0 lbs430 lbs
27Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
28Cumene98-82-8296 lbs0 lbs302 lbs
29Acrylonitrile107-13-1278 lbs0 lbs294 lbs
30Manganese7439-96-5192 lbs86 lbs278 lbs
31Phenol108-95-2255 lbs0 lbs276 lbs
32Propylene oxide75-56-9255 lbs0 lbs255 lbs
33Chromium7440-47-396 lbs144 lbs240 lbs
34Nickel7440-02-042 lbs86 lbs128 lbs
35Mercury compoundsN4580 lbs0 lbs46 lbs
36Acetaldehyde75-07-045 lbs0 lbs45 lbs
37Chlorine7782-50-525 lbs0 lbs25 lbs
38Certain glycol ethersN23011 lbs0 lbs11 lbs
39Diethanolamine111-42-210 lbs0 lbs10 lbs
40Styrene100-42-57 lbs0 lbs7 lbs
41Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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