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
0 BLACKWELL PASADENA 77506
Elevation
22.82 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: 12.82 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)
22.87 million lbs
Extremely High
3505.4x 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)
9.83 million lbs
Extremely High
2039.4x 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)22,870,186 lbs9,834,650 lbs13,035,535 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,822,257 lbs640,799 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 70 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (70 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
3Propylene115-07-11,262,831 lbs0 lbs1,262,831 lbs
4n-Hexane110-54-31,215,964 lbs9 lbs1,216,463 lbs
5Ammonia7664-41-71,096,958 lbs8,000 lbs1,104,958 lbs
6Ethylene74-85-1552,821 lbs0 lbs552,821 lbs
7Xylene (mixed isomers)1330-20-7508,223 lbs741 lbs511,395 lbs
8Toluene108-88-3391,268 lbs294 lbs392,530 lbs
9Benzene71-43-2359,864 lbs496 lbs360,943 lbs
10Methanol67-56-1336,470 lbs0 lbs336,470 lbs
11Hydrogen sulfide7783-06-4261,896 lbs3,527 lbs265,424 lbs
121,3-Butadiene106-99-0261,977 lbs0 lbs261,977 lbs
13Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9256,810 lbs0 lbs256,810 lbs
14Cyclohexane110-82-7161,507 lbs0 lbs162,276 lbs
15n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
16Ozone10028-15-6115,228 lbs0 lbs115,228 lbs
17Diethanolamine111-42-2102,160 lbs0 lbs102,160 lbs
18Ethylbenzene100-41-481,912 lbs168 lbs82,717 lbs
19Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
201,2,4-Trimethylbenzene95-63-631,181 lbs0 lbs31,670 lbs
21Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
22Naphthalene91-20-324,577 lbs75 lbs25,987 lbs
23Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
24Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
25Isoprene78-79-513,332 lbs0 lbs13,332 lbs
26Cumene98-82-811,194 lbs0 lbs11,383 lbs
27Carbon disulfide75-15-08,557 lbs0 lbs8,557 lbs
28Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
29Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
30Cyanide compoundsN1065,934 lbs45 lbs5,979 lbs
31Molybdenum trioxide1313-27-55,795 lbs0 lbs5,795 lbs
32Ethylene glycol107-21-15,553 lbs0 lbs5,562 lbs
33Biphenyl92-52-45,161 lbs0 lbs5,502 lbs
34Phenol108-95-22,450 lbs2,959 lbs5,409 lbs
35Polycyclic aromatic compoundsN5904,543 lbs525 lbs5,269 lbs
36Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
37Styrene100-42-53,431 lbs0 lbs3,431 lbs
38Zinc compoundsN982219 lbs1,181 lbs2,891 lbs
39Formaldehyde50-00-02,284 lbs0 lbs2,284 lbs
40Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
41Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
42Carbonyl sulfide463-58-11,451 lbs0 lbs1,451 lbs
43Formic acid64-18-61,406 lbs0 lbs1,406 lbs
44Nickel compoundsN495654 lbs489 lbs1,143 lbs
45Phenanthrene85-01-8937 lbs0 lbs937 lbs
46Vanadium compoundsN77079 lbs509 lbs588 lbs
47Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0461 lbs0 lbs461 lbs
48Lead7439-92-1260 lbs126 lbs386 lbs
49Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
50Chlorine7782-50-5268 lbs0 lbs268 lbs
51Cresol (mixed isomers)1319-77-3232 lbs0 lbs232 lbs
52Mercury compoundsN458197 lbs1 lbs199 lbs
53Nickel And Nickel CompoundsN49566 lbs123 lbs189 lbs
54Cobalt compoundsN096131 lbs24 lbs155 lbs
55Lead And Lead CompoundsN420142 lbs12 lbs154 lbs
56Nickel7440-02-0120 lbs0 lbs120 lbs
57Mercury And Mercury CompoundsN458109 lbs0 lbs109 lbs
58Lead compoundsN42050 lbs57 lbs107 lbs
59Mercury7439-97-6106 lbs0 lbs106 lbs
60Certain glycol ethersN23080 lbs0 lbs80 lbs
61Anthracene120-12-775 lbs0 lbs75 lbs
62Manganese7439-96-570 lbs0 lbs70 lbs
63Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
64C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
65Chromium7440-47-340 lbs0 lbs40 lbs
66Antimony compoundsN01038 lbs0 lbs38 lbs
67Benzo[g,h,i]perylene191-24-216 lbs7 lbs24 lbs
68Chromium compounds (except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
69Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0908 lbs0 lbs8 lbs
70tert-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 55 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (55 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
3Ammonia7664-41-7116,824 lbs1,027 lbs127,030 lbs
4Diethanolamine111-42-210,092 lbs0 lbs85,621 lbs
5n-Hexane110-54-345,418 lbs0 lbs45,522 lbs
6Xylene (mixed isomers)1330-20-739,577 lbs28 lbs40,002 lbs
7Propylene115-07-137,956 lbs0 lbs37,956 lbs
81,3-Butadiene106-99-034,093 lbs0 lbs34,093 lbs
9Ethylene74-85-132,332 lbs0 lbs32,332 lbs
10Toluene108-88-327,802 lbs18 lbs28,020 lbs
11Benzene71-43-225,366 lbs118 lbs26,078 lbs
12Ozone10028-15-625,701 lbs0 lbs25,701 lbs
13Methanol67-56-115,730 lbs0 lbs20,536 lbs
14Zinc compoundsN98222 lbs32 lbs19,978 lbs
15Hydrogen sulfide7783-06-414,468 lbs0 lbs14,471 lbs
16Cyclohexane110-82-711,951 lbs0 lbs11,969 lbs
17Ethylene glycol107-21-1529 lbs0 lbs7,568 lbs
18Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
19Ethylbenzene100-41-45,524 lbs17 lbs5,626 lbs
20Phenol108-95-2419 lbs8 lbs3,284 lbs
211,2,4-Trimethylbenzene95-63-62,830 lbs0 lbs3,042 lbs
22Isoprene78-79-52,379 lbs0 lbs2,379 lbs
23Formaldehyde50-00-0255 lbs0 lbs2,348 lbs
24Formic acid64-18-6189 lbs0 lbs1,968 lbs
25Molybdenum trioxide1313-27-51,804 lbs0 lbs1,804 lbs
26Naphthalene91-20-31,611 lbs7 lbs1,720 lbs
27Lead And Lead CompoundsN42096 lbs7 lbs1,291 lbs
28Certain glycol ethersN23010 lbs0 lbs1,121 lbs
29Carbonyl sulfide463-58-11,041 lbs0 lbs1,041 lbs
30Nickel And Nickel CompoundsN4950 lbs0 lbs915 lbs
31Dimethylamine124-40-3864 lbs0 lbs884 lbs
32Cumene98-82-8797 lbs0 lbs803 lbs
33Polycyclic aromatic compoundsN590355 lbs55 lbs410 lbs
34Acrylonitrile107-13-1278 lbs0 lbs294 lbs
35Styrene100-42-5269 lbs0 lbs269 lbs
36Lead compoundsN4200 lbs0 lbs269 lbs
37Propylene oxide75-56-9255 lbs0 lbs255 lbs
38Carbon disulfide75-15-0243 lbs0 lbs243 lbs
39Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9101 lbs0 lbs101 lbs
40Acetaldehyde75-07-045 lbs0 lbs45 lbs
41Cobalt And Cobalt CompoundsN09642 lbs0 lbs42 lbs
42Phenanthrene85-01-836 lbs0 lbs36 lbs
43Biphenyl92-52-433 lbs0 lbs33 lbs
44Mercury And Mercury CompoundsN45829 lbs0 lbs31 lbs
45Manganese7439-96-530 lbs0 lbs30 lbs
46Chlorine7782-50-525 lbs0 lbs25 lbs
47Chromium7440-47-325 lbs0 lbs25 lbs
48Nickel7440-02-024 lbs0 lbs24 lbs
49Anthracene120-12-71 lbs0 lbs14 lbs
50Benzo[g,h,i]perylene191-24-28 lbs5 lbs13 lbs
51Lead7439-92-10 lbs0 lbs8 lbs
52Mercury7439-97-67 lbs0 lbs7 lbs
53Vanadium (except when contained in an alloy)7440-62-20 lbs0 lbs3 lbs
54Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0902 lbs0 lbs3 lbs
55Cresol (mixed isomers)1319-77-31 lbs0 lbs1 lbs

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