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
208 N BLACKWELL ST PASADENA 77506
Building Size
1,200 sqft
Total structure area from HCAD building records.
Elevation
22.32 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: 12.32 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
Very High
Higher pollution than 94% 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)
21.98 million lbs
Extremely High
3368.5x more than typical Houston property
≈ 1.1K 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)
8.94 million lbs
Extremely High
1854.2x 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)
13.04 million 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)21,976,896 lbs8,941,361 lbs13,035,535 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,730,272 lbs558,327 lbs2,052,984 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 94% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 0-9th percentile (top 10% most polluted).

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

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Propylene, n-Hexane, Ammonia

View the full list of 63 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (63 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs13,016,167 lbs13,016,167 lbs
2Hydrogen cyanide74-90-82,440,300 lbs0 lbs2,440,300 lbs
3Propylene115-07-11,262,705 lbs0 lbs1,262,705 lbs
4n-Hexane110-54-31,182,567 lbs9 lbs1,183,066 lbs
5Ammonia7664-41-71,004,095 lbs8,000 lbs1,012,095 lbs
6Xylene (mixed isomers)1330-20-7506,726 lbs741 lbs509,897 lbs
7Toluene108-88-3388,513 lbs294 lbs389,775 lbs
8Ethylene74-85-1387,367 lbs0 lbs387,367 lbs
9Benzene71-43-2359,190 lbs496 lbs360,268 lbs
10Hydrogen sulfide7783-06-4261,896 lbs3,527 lbs265,424 lbs
11Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9256,810 lbs0 lbs256,810 lbs
12Cyclohexane110-82-7146,850 lbs0 lbs147,619 lbs
13n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
14Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
15Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
16Ethylbenzene100-41-481,738 lbs168 lbs82,543 lbs
17Methanol67-56-163,708 lbs0 lbs63,708 lbs
181,3-Butadiene106-99-058,959 lbs0 lbs58,959 lbs
191,2,4-Trimethylbenzene95-63-631,181 lbs0 lbs31,670 lbs
20Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
21Naphthalene91-20-324,577 lbs75 lbs25,987 lbs
22Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
23Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
24Cumene98-82-811,194 lbs0 lbs11,383 lbs
25Carbon disulfide75-15-08,557 lbs0 lbs8,557 lbs
26Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
27Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
28Biphenyl92-52-45,161 lbs0 lbs5,502 lbs
29Polycyclic aromatic compoundsN5904,543 lbs525 lbs5,269 lbs
30Ethylene glycol107-21-15,255 lbs0 lbs5,264 lbs
31Phenol108-95-21,635 lbs2,959 lbs4,594 lbs
32Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
33Styrene100-42-53,431 lbs0 lbs3,431 lbs
34Zinc compoundsN982219 lbs1,181 lbs2,891 lbs
35Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
36Nickel compoundsN495654 lbs489 lbs1,143 lbs
37Phenanthrene85-01-8937 lbs0 lbs937 lbs
38Vanadium compoundsN77079 lbs509 lbs588 lbs
39Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0461 lbs0 lbs461 lbs
40Lead7439-92-1260 lbs126 lbs386 lbs
41Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
42Chlorine7782-50-5268 lbs0 lbs268 lbs
43Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
44Mercury compoundsN458197 lbs1 lbs199 lbs
45Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
46Cobalt compoundsN096131 lbs24 lbs155 lbs
47Lead And Lead CompoundsN420142 lbs12 lbs154 lbs
48Nickel7440-02-0120 lbs0 lbs120 lbs
49Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
50Lead compoundsN42050 lbs57 lbs107 lbs
51Mercury7439-97-6106 lbs0 lbs106 lbs
52Certain glycol ethersN23080 lbs0 lbs80 lbs
53Anthracene120-12-775 lbs0 lbs75 lbs
54Manganese7439-96-570 lbs0 lbs70 lbs
55Isoprene78-79-560 lbs0 lbs60 lbs
56Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
57C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
58Chromium7440-47-340 lbs0 lbs40 lbs
59Antimony compoundsN01038 lbs0 lbs38 lbs
60Benzo[g,h,i]perylene191-24-216 lbs7 lbs24 lbs
61Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
62Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
63tert-Butyl alcohol75-65-07 lbs0 lbs7 lbs

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen cyanide, Ammonia, Diethanolamine, n-Hexane

View the full list of 48 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (48 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs2,051,661 lbs2,051,661 lbs
2Hydrogen cyanide74-90-8177,459 lbs0 lbs177,459 lbs
3Ammonia7664-41-7110,146 lbs1,027 lbs119,597 lbs
4Diethanolamine111-42-210,092 lbs0 lbs85,621 lbs
5n-Hexane110-54-343,068 lbs0 lbs43,172 lbs
6Xylene (mixed isomers)1330-20-739,577 lbs28 lbs40,002 lbs
7Propylene115-07-137,873 lbs0 lbs37,873 lbs
8Toluene108-88-327,802 lbs18 lbs28,020 lbs
9Benzene71-43-225,261 lbs118 lbs25,969 lbs
10Ozone10028-15-625,701 lbs0 lbs25,701 lbs
11Zinc compoundsN98222 lbs32 lbs19,978 lbs
12Ethylene74-85-117,866 lbs0 lbs17,866 lbs
13Hydrogen sulfide7783-06-414,468 lbs0 lbs14,471 lbs
14Cyclohexane110-82-711,657 lbs0 lbs11,675 lbs
15Ethylene glycol107-21-1500 lbs0 lbs7,519 lbs
16Ethylbenzene100-41-45,524 lbs17 lbs5,626 lbs
171,2,4-Trimethylbenzene95-63-62,830 lbs0 lbs3,042 lbs
18Phenol108-95-2164 lbs8 lbs3,009 lbs
19Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
20Naphthalene91-20-31,611 lbs7 lbs1,720 lbs
211,3-Butadiene106-99-01,718 lbs0 lbs1,718 lbs
22Lead And Lead CompoundsN42096 lbs7 lbs1,291 lbs
23Certain glycol ethersN23010 lbs0 lbs1,121 lbs
24Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
25Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
26Cumene98-82-8797 lbs0 lbs803 lbs
27Polycyclic aromatic compoundsN590355 lbs55 lbs410 lbs
28Lead compoundsN4200 lbs0 lbs269 lbs
29Styrene100-42-5269 lbs0 lbs269 lbs
30Carbon disulfide75-15-0243 lbs0 lbs243 lbs
31Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9101 lbs0 lbs101 lbs
32Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
33Phenanthrene85-01-836 lbs0 lbs36 lbs
34Biphenyl92-52-433 lbs0 lbs33 lbs
35Mercury And Mercury CompoundsN45829 lbs0 lbs31 lbs
36Manganese7439-96-530 lbs0 lbs30 lbs
37Chromium7440-47-325 lbs0 lbs25 lbs
38Chlorine7782-50-525 lbs0 lbs25 lbs
39Nickel7440-02-024 lbs0 lbs24 lbs
40Anthracene120-12-71 lbs0 lbs14 lbs
41Benzo[g,h,i]perylene191-24-28 lbs5 lbs13 lbs
42Lead7439-92-10 lbs0 lbs8 lbs
43Isoprene78-79-58 lbs0 lbs8 lbs
44Mercury7439-97-67 lbs0 lbs7 lbs
45Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs
46Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs3 lbs
47Methanol67-56-10 lbs0 lbs2 lbs
48Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs

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