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
1000 N SOUTH AVE PASADENA 77503
Elevation
23.78 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: 13.78 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)
6.98 million lbs
Extremely High
1070.0x more than typical Houston property
≈ 349 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)
5.88 million lbs
Extremely High
1219.2x 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)
1.1 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)6,980,684 lbs5,879,267 lbs1,101,416 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)688,052 lbs532,017 lbs74,437 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, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia, Cumene, n-Hexane

View the full list of 67 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (67 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Ethylene74-85-11,557,991 lbs0 lbs1,557,991 lbs
2Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs1,038,744 lbs1,038,744 lbs
3Ammonia7664-41-7760,815 lbs36,262 lbs797,078 lbs
4Cumene98-82-8518,059 lbs11 lbs518,071 lbs
5n-Hexane110-54-3513,257 lbs221 lbs513,519 lbs
6Methanol67-56-1448,119 lbs7,563 lbs455,682 lbs
7Propylene115-07-1289,050 lbs0 lbs289,050 lbs
8Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9278,374 lbs0 lbs278,374 lbs
9Acetophenone98-86-2206,492 lbs3,645 lbs210,136 lbs
10Benzene71-43-2172,558 lbs27 lbs172,587 lbs
11Vinyl chloride75-01-4166,976 lbs14 lbs166,990 lbs
12Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0156,836 lbs0 lbs156,836 lbs
13Aluminum (fume or dust)7429-90-5133,040 lbs0 lbs133,050 lbs
14Acetaldehyde75-07-098,856 lbs3,956 lbs102,812 lbs
15Toluene108-88-393,731 lbs557 lbs94,333 lbs
16Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
17Xylene (mixed isomers)1330-20-749,965 lbs33 lbs50,007 lbs
181,2,4-Trimethylbenzene95-63-640,441 lbs105 lbs40,549 lbs
19Certain glycol ethersN23037,104 lbs0 lbs37,104 lbs
20Styrene100-42-532,913 lbs0 lbs32,913 lbs
21o-Toluidine95-53-429,521 lbs51 lbs30,113 lbs
22Isobutyraldehyde78-84-228,404 lbs0 lbs28,404 lbs
23Cyclohexane110-82-723,184 lbs51 lbs23,285 lbs
24Butyraldehyde123-72-823,130 lbs0 lbs23,130 lbs
25Zinc compoundsN98210,404 lbs6,866 lbs17,285 lbs
26Chloromethane74-87-315,422 lbs31 lbs15,478 lbs
27Boron trifluoride7637-07-214,843 lbs0 lbs14,843 lbs
28Chloroethane75-00-314,708 lbs41 lbs14,784 lbs
29Phenol108-95-213,534 lbs4 lbs13,538 lbs
30Diaminotoluene (mixed isomers)25376-45-812,695 lbs51 lbs12,797 lbs
31Chlorine7782-50-510,138 lbs0 lbs10,143 lbs
32Ethylbenzene100-41-47,232 lbs22 lbs7,256 lbs
33Aniline62-53-36,824 lbs25 lbs7,119 lbs
34Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
35n-Butyl alcohol71-36-34,032 lbs0 lbs4,032 lbs
36Phthalic anhydride85-44-93,545 lbs0 lbs3,545 lbs
37Formaldehyde50-00-03,345 lbs0 lbs3,345 lbs
38Biphenyl92-52-43,115 lbs15 lbs3,145 lbs
39Manganese compoundsN4502,054 lbs262 lbs2,316 lbs
40Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
41Manganese7439-96-51,668 lbs543 lbs2,211 lbs
42Chromium7440-47-31,182 lbs958 lbs2,139 lbs
43Ethylene glycol107-21-12,118 lbs0 lbs2,118 lbs
44o-Cresol95-48-71,985 lbs0 lbs1,985 lbs
45Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
46Maleic anhydride108-31-61,686 lbs0 lbs1,686 lbs
47Nickel7440-02-0974 lbs574 lbs1,549 lbs
48Formic acid64-18-61,406 lbs0 lbs1,406 lbs
49o-Xylene95-47-61,330 lbs0 lbs1,330 lbs
501,3-Butadiene106-99-01,064 lbs0 lbs1,064 lbs
51Naphthalene91-20-31,013 lbs21 lbs1,035 lbs
52Chromium compounds (except for chromite ore mined in the Transvaal Region)N090411 lbs417 lbs828 lbs
53Nickel compoundsN495443 lbs250 lbs694 lbs
54Lead compoundsN420291 lbs38 lbs330 lbs
55Manganese And Manganese CompoundsN450309 lbs0 lbs309 lbs
56Copper7440-50-8250 lbs0 lbs250 lbs
57Cobalt7440-48-4250 lbs0 lbs250 lbs
581,2-Dibromoethane106-93-4133 lbs0 lbs133 lbs
591,2-Dichloroethane107-06-2127 lbs0 lbs127 lbs
60Diphenylamine122-39-4126 lbs0 lbs126 lbs
61Lead And Lead CompoundsN42056 lbs39 lbs96 lbs
62Lead7439-92-11 lbs13 lbs14 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
65Polycyclic aromatic compoundsN5902 lbs2 lbs4 lbs
66Hydrogen sulfide7783-06-41 lbs0 lbs1 lbs
67Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Ethylene, Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Propylene, Methanol

View the full list of 54 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (54 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1159,132 lbs0 lbs159,132 lbs
2Ammonia7664-41-783,360 lbs93 lbs110,865 lbs
3Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs72,435 lbs72,435 lbs
4Propylene115-07-157,757 lbs0 lbs57,757 lbs
5Methanol67-56-119,060 lbs336 lbs46,187 lbs
6Cumene98-82-835,001 lbs0 lbs35,140 lbs
7n-Hexane110-54-320,460 lbs5 lbs20,476 lbs
8Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-020,007 lbs0 lbs20,007 lbs
9Benzene71-43-219,530 lbs2 lbs19,533 lbs
10Acetophenone98-86-217,719 lbs350 lbs18,069 lbs
11Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,341 lbs0 lbs17,341 lbs
12Aluminum (fume or dust)7429-90-513,724 lbs0 lbs13,724 lbs
13Vinyl chloride75-01-413,207 lbs1 lbs13,208 lbs
14Zinc compoundsN982678 lbs476 lbs9,871 lbs
15Acetaldehyde75-07-08,345 lbs380 lbs8,725 lbs
16Vanadium compoundsN7700 lbs0 lbs6,689 lbs
17Phenol108-95-24,579 lbs0 lbs5,952 lbs
18Vinyl acetate108-05-45,850 lbs0 lbs5,852 lbs
19Toluene108-88-33,102 lbs3 lbs4,948 lbs
201,2,4-Trimethylbenzene95-63-64,078 lbs0 lbs4,777 lbs
21Isobutyraldehyde78-84-24,431 lbs0 lbs4,431 lbs
22o-Toluidine95-53-44,008 lbs5 lbs4,018 lbs
23Xylene (mixed isomers)1330-20-73,767 lbs5 lbs3,912 lbs
24Formaldehyde50-00-0354 lbs0 lbs3,326 lbs
25Butyraldehyde123-72-82,507 lbs0 lbs2,507 lbs
26Cyclohexane110-82-72,312 lbs5 lbs2,322 lbs
27Chloroethane75-00-32,102 lbs5 lbs2,107 lbs
28Formic acid64-18-6189 lbs0 lbs1,968 lbs
29Chloromethane74-87-31,938 lbs5 lbs1,943 lbs
30Diaminotoluene (mixed isomers)25376-45-81,821 lbs5 lbs1,831 lbs
31Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
32o-Cresol95-48-788 lbs0 lbs1,122 lbs
33Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1,095 lbs
34Dimethylamine124-40-3864 lbs0 lbs884 lbs
35n-Butyl alcohol71-36-3638 lbs0 lbs638 lbs
36Ethylene glycol107-21-1588 lbs0 lbs608 lbs
37Chlorine7782-50-5497 lbs0 lbs497 lbs
38Ethylbenzene100-41-4427 lbs3 lbs430 lbs
39Perfluorooctanoic acid335-67-10 lbs0 lbs402 lbs
401,3-Butadiene106-99-0295 lbs0 lbs295 lbs
41Acrylonitrile107-13-1278 lbs0 lbs294 lbs
42Maleic anhydride108-31-6132 lbs0 lbs281 lbs
43Propylene oxide75-56-9255 lbs0 lbs255 lbs
44Manganese7439-96-5162 lbs86 lbs248 lbs
45Chromium7440-47-371 lbs146 lbs223 lbs
46Lead compoundsN4200 lbs0 lbs161 lbs
47Naphthalene91-20-3132 lbs1 lbs133 lbs
48Nickel7440-02-018 lbs88 lbs110 lbs
49Lead And Lead CompoundsN4208 lbs1 lbs70 lbs
50Mercury compoundsN4580 lbs0 lbs46 lbs
51Diphenylamine122-39-423 lbs0 lbs23 lbs
521,2-Dibromoethane106-93-44 lbs0 lbs4 lbs
53Certain glycol ethersN2301 lbs0 lbs1 lbs
54Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs

Explore More Properties