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
1550 N WITTER ST PASADENA 77506
Elevation
13.25 ft
Height above sea level from USGS data.
FEMA Flood Zone
AE
High Risk - 1% annual chance with established base flood elevation
Overall Risk
Moderate
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
Moderate
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: 3.25 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.

  • This property is in a high-risk flood zone. Flood insurance is required for mortgages.
  • Consider flood mitigation measures like elevated utilities and flood vents.
  • 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)
6.13 million lbs
Extremely High
940.0x more than typical Houston property
≈ 307 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)
6.09 million lbs
Extremely High
1262.6x 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)6,132,742 lbs6,088,579 lbs44,163 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)465,320 lbs361,776 lbs957 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 66 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (66 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,303,858 lbs0 lbs1,303,858 lbs
2n-Hexane110-54-31,176,020 lbs179 lbs1,176,683 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
5Methanol67-56-1334,060 lbs0 lbs334,060 lbs
6Propylene115-07-1271,756 lbs0 lbs271,756 lbs
7Xylene (mixed isomers)1330-20-7237,796 lbs147 lbs240,352 lbs
81,3-Butadiene106-99-0232,400 lbs0 lbs232,401 lbs
9Hydrogen cyanide74-90-8213,734 lbs0 lbs213,734 lbs
10Toluene108-88-3208,868 lbs60 lbs209,881 lbs
11n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
12Benzene71-43-2111,618 lbs53 lbs112,244 lbs
13Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
141,2,4-Trimethylbenzene95-63-650,576 lbs105 lbs51,159 lbs
15Ethylbenzene100-41-446,639 lbs77 lbs47,347 lbs
16Hydrogen sulfide7783-06-437,772 lbs0 lbs37,773 lbs
17Certain glycol ethersN23037,184 lbs0 lbs37,184 lbs
18Styrene100-42-532,913 lbs0 lbs32,913 lbs
19Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
20Cyclohexane110-82-729,731 lbs0 lbs30,491 lbs
21Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
22Naphthalene91-20-316,408 lbs21 lbs17,757 lbs
23Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
24Zinc compoundsN9827,485 lbs6,916 lbs14,401 lbs
25Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
26Isoprene78-79-513,272 lbs0 lbs13,272 lbs
27Cumene98-82-89,231 lbs10 lbs9,429 lbs
28Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-08,347 lbs0 lbs8,347 lbs
29Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
30Chlorine7782-50-56,750 lbs0 lbs6,750 lbs
31Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
32Ethylene glycol107-21-15,554 lbs0 lbs5,554 lbs
33Phenol108-95-25,163 lbs0 lbs5,163 lbs
34Biphenyl92-52-44,816 lbs0 lbs5,138 lbs
35Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
36Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
37Manganese compoundsN4502,054 lbs262 lbs2,316 lbs
38Manganese7439-96-51,738 lbs543 lbs2,281 lbs
39Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
40Chromium7440-47-31,222 lbs925 lbs2,146 lbs
41o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
42Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
43Nickel7440-02-01,094 lbs543 lbs1,637 lbs
44Formic acid64-18-61,406 lbs0 lbs1,406 lbs
45Maleic anhydride108-31-61,046 lbs0 lbs1,046 lbs
46Chromium compounds (except for chromite ore mined in the Transvaal Region)N090411 lbs417 lbs828 lbs
47Aluminum (fume or dust)7429-90-5737 lbs0 lbs737 lbs
48Nickel compoundsN495443 lbs250 lbs694 lbs
49Diethanolamine111-42-2600 lbs0 lbs600 lbs
50Lead compoundsN420290 lbs33 lbs323 lbs
51Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
52Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
53Cobalt7440-48-4250 lbs0 lbs250 lbs
54Copper7440-50-8250 lbs0 lbs250 lbs
551,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
561,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
57Diphenylamine122-39-4126 lbs0 lbs126 lbs
58Lead And Lead CompoundsN42055 lbs35 lbs90 lbs
59Polycyclic aromatic compoundsN59047 lbs2 lbs49 lbs
60C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
61Anthracene120-12-731 lbs0 lbs31 lbs
62Mercury7439-97-630 lbs0 lbs30 lbs
63Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
64Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
65Benzo[g,h,i]perylene191-24-23 lbs0 lbs3 lbs
66Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Ammonia, Methanol, 1,3-Butadiene, Zinc compounds

View the full list of 46 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (46 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
3Methanol67-56-115,808 lbs0 lbs42,599 lbs
41,3-Butadiene106-99-033,626 lbs0 lbs33,626 lbs
5Zinc compoundsN982678 lbs481 lbs28,626 lbs
6n-Hexane110-54-321,948 lbs0 lbs22,058 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)1330-20-712,066 lbs23 lbs12,605 lbs
9Toluene108-88-38,678 lbs13 lbs10,671 lbs
10Vanadium compoundsN7700 lbs0 lbs6,689 lbs
111,2,4-Trimethylbenzene95-63-65,154 lbs0 lbs6,062 lbs
12Benzene71-43-25,840 lbs6 lbs5,960 lbs
13Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
14Phenol108-95-22,206 lbs0 lbs3,579 lbs
15Formaldehyde50-00-0354 lbs0 lbs3,326 lbs
16Isoprene78-79-52,371 lbs0 lbs2,371 lbs
17Formic acid64-18-6189 lbs0 lbs1,968 lbs
18Ethylbenzene100-41-41,813 lbs15 lbs1,903 lbs
19Lead And Lead CompoundsN4208 lbs6 lbs1,248 lbs
20Propylene115-07-11,202 lbs0 lbs1,202 lbs
21Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
22o-Cresol95-48-788 lbs0 lbs1,122 lbs
23Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
24Hydrogen sulfide7783-06-4923 lbs0 lbs923 lbs
25Dimethylamine124-40-3864 lbs0 lbs884 lbs
26Naphthalene91-20-3739 lbs1 lbs764 lbs
27Cyclohexane110-82-7649 lbs0 lbs667 lbs
28Cumene98-82-8471 lbs0 lbs617 lbs
29Ethylene glycol107-21-1530 lbs0 lbs550 lbs
30Chlorine7782-50-5512 lbs0 lbs512 lbs
31Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
32Acrylonitrile107-13-1278 lbs0 lbs294 lbs
33Maleic anhydride108-31-6132 lbs0 lbs281 lbs
34Manganese7439-96-5192 lbs86 lbs278 lbs
35Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
36Propylene oxide75-56-9255 lbs0 lbs255 lbs
37Chromium7440-47-396 lbs144 lbs240 lbs
38Lead compoundsN4200 lbs3 lbs164 lbs
39Nickel7440-02-042 lbs86 lbs128 lbs
40Mercury compoundsN4580 lbs0 lbs46 lbs
41Acetaldehyde75-07-045 lbs0 lbs45 lbs
42Diphenylamine122-39-423 lbs0 lbs23 lbs
43Certain glycol ethersN23011 lbs0 lbs11 lbs
44Diethanolamine111-42-210 lbs0 lbs10 lbs
451,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
46Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

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