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
8320 SHELDON RD HOUSTON 77049
Elevation
40.73 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: 30.73 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 92% 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)
11.27 million lbs
Extremely High
1726.9x more than typical Houston property
≈ 563 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)
11.24 million lbs
Extremely High
2331.8x 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)
22 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)11,266,897 lbs11,244,844 lbs22,053 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)3,010,496 lbs1,140,927 lbs1,827 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 92% 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):

Methanol, Ethylbenzene, Acetophenone, Styrene, 1,3-Butadiene

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)
1Methanol67-56-1486,576 lbs0 lbs20,438,572 lbs
2Ethylbenzene100-41-4774,407 lbs0 lbs6,643,176 lbs
3Acetophenone98-86-2147,704 lbs0 lbs6,062,474 lbs
4Styrene100-42-5484,317 lbs0 lbs2,936,528 lbs
51,3-Butadiene106-99-01,885,935 lbs0 lbs1,885,935 lbs
6Allyl alcohol107-18-656,687 lbs0 lbs1,530,217 lbs
7Benzene71-43-2854,109 lbs89 lbs1,151,242 lbs
8Propylene115-07-11,006,756 lbs0 lbs1,006,756 lbs
9Propylene oxide75-56-9748,088 lbs0 lbs821,764 lbs
10Ammonia7664-41-7796,916 lbs9,735 lbs806,651 lbs
11Phenol108-95-24,792 lbs0 lbs744,474 lbs
12Acetonitrile75-05-8373,837 lbs0 lbs726,784 lbs
13Ethylene74-85-1698,385 lbs0 lbs698,385 lbs
14Acetaldehyde75-07-0587,542 lbs0 lbs587,542 lbs
15tert-Butyl alcohol75-65-0108,935 lbs0 lbs557,508 lbs
16Toluene108-88-3284,898 lbs0 lbs541,087 lbs
17Methyl isobutyl ketone108-10-1525,733 lbs0 lbs525,733 lbs
18n-Butyl alcohol71-36-38,139 lbs0 lbs470,700 lbs
19N-Methyl-2-pyrrolidone872-50-42,753 lbs0 lbs427,839 lbs
20Naphthalene91-20-3292,176 lbs0 lbs292,176 lbs
21Methyl tert-butyl ether1634-04-4230,386 lbs0 lbs251,360 lbs
22n-Hexane110-54-3217,285 lbs0 lbs217,285 lbs
23Isoprene78-79-5159,549 lbs0 lbs159,549 lbs
24Cumene98-82-894,706 lbs0 lbs125,192 lbs
25Tetrachloroethylene127-18-4105,005 lbs0 lbs105,005 lbs
26Xylene (mixed isomers)1330-20-7100,006 lbs0 lbs103,942 lbs
271,2,4-Trimethylbenzene95-63-657,877 lbs0 lbs57,877 lbs
28Dicyclopentadiene77-73-651,191 lbs0 lbs51,191 lbs
29Propionaldehyde123-38-613,598 lbs0 lbs36,618 lbs
30Ethylene oxide75-21-826,715 lbs0 lbs26,715 lbs
31Chlorine7782-50-515,020 lbs0 lbs15,020 lbs
32Molybdenum trioxide1313-27-510,461 lbs0 lbs10,461 lbs
33Cyclohexane110-82-77,975 lbs0 lbs7,975 lbs
34Cyclohexanol108-93-05,782 lbs0 lbs5,782 lbs
35Maleic anhydride108-31-65,323 lbs0 lbs5,323 lbs
36Phenanthrene85-01-83,788 lbs0 lbs3,788 lbs
37Copper compoundsN1000 lbs3,694 lbs3,694 lbs
38Furan110-00-92,941 lbs0 lbs2,941 lbs
39Crotonaldehyde4170-30-32,750 lbs0 lbs2,750 lbs
40Nickel7440-02-07 lbs2,538 lbs2,544 lbs
41Manganese7439-96-5106 lbs2,340 lbs2,446 lbs
42Chromium compounds (except for chromite ore mined in the Transvaal Region)N090356 lbs976 lbs1,332 lbs
43Lead7439-92-1603 lbs601 lbs1,204 lbs
44Vinyl acetate108-05-41,161 lbs0 lbs1,161 lbs
45sec-Butyl alcohol78-92-2948 lbs0 lbs948 lbs
46Copper And Copper CompoundsN1000 lbs917 lbs917 lbs
47Manganese compoundsN4500 lbs778 lbs778 lbs
48Formic acid64-18-6703 lbs0 lbs703 lbs
49Anthracene120-12-7700 lbs0 lbs700 lbs
50Acrolein107-02-8445 lbs0 lbs445 lbs
51Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N090160 lbs282 lbs442 lbs
521,2-Butylene oxide106-88-7164 lbs0 lbs164 lbs
53Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040125 lbs0 lbs125 lbs
54Barium And Barium CompoundsN040125 lbs0 lbs125 lbs
55Formaldehyde50-00-0115 lbs0 lbs115 lbs
56Chromium7440-47-30 lbs95 lbs95 lbs
57Mercury7439-97-622 lbs0 lbs55 lbs
58Polycyclic aromatic compoundsN59035 lbs0 lbs35 lbs
59Dioxin and dioxin-like compoundsN15018 lbs0 lbs18 lbs
60Isobutyraldehyde78-84-28 lbs0 lbs8 lbs
61Nickel compoundsN4950 lbs8 lbs8 lbs
62Certain glycol ethersN2301 lbs0 lbs1 lbs
63Acetamide60-35-51 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

Methanol, Ethylbenzene, Acetophenone, 1,3-Butadiene, Benzene

View the full list of 52 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (52 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Methanol67-56-150,296 lbs0 lbs766,960 lbs
2Ethylbenzene100-41-481,932 lbs0 lbs523,124 lbs
3Acetophenone98-86-210,585 lbs0 lbs370,956 lbs
41,3-Butadiene106-99-0226,767 lbs0 lbs226,767 lbs
5Benzene71-43-2105,650 lbs0 lbs132,258 lbs
6Propylene115-07-1126,126 lbs0 lbs126,126 lbs
7Styrene100-42-525,299 lbs0 lbs118,635 lbs
8Acetonitrile75-05-828,355 lbs0 lbs102,022 lbs
9Propylene oxide75-56-984,847 lbs0 lbs94,712 lbs
10Ammonia7664-41-792,037 lbs826 lbs92,863 lbs
11Allyl alcohol107-18-61,916 lbs0 lbs87,173 lbs
12Acetaldehyde75-07-058,529 lbs0 lbs58,529 lbs
13Ethylene74-85-146,945 lbs0 lbs46,945 lbs
14Toluene108-88-322,058 lbs0 lbs37,480 lbs
15Methyl tert-butyl ether1634-04-431,577 lbs0 lbs32,921 lbs
16n-Hexane110-54-328,863 lbs0 lbs29,003 lbs
17Naphthalene91-20-328,207 lbs0 lbs28,293 lbs
18tert-Butyl alcohol75-65-025,572 lbs0 lbs27,089 lbs
19Isoprene78-79-519,021 lbs0 lbs19,021 lbs
20n-Butyl alcohol71-36-3169 lbs0 lbs14,730 lbs
21Tetrachloroethylene127-18-412,768 lbs0 lbs12,768 lbs
22Xylene (mixed isomers)1330-20-78,267 lbs0 lbs9,273 lbs
23Phenol108-95-2154 lbs0 lbs6,862 lbs
24Barium And Barium CompoundsN04035 lbs0 lbs5,615 lbs
25Nickel7440-02-01 lbs103 lbs4,898 lbs
261,2,4-Trimethylbenzene95-63-64,257 lbs0 lbs4,460 lbs
27Dicyclopentadiene77-73-64,111 lbs0 lbs4,130 lbs
28Cumene98-82-81,675 lbs0 lbs3,684 lbs
29Molybdenum trioxide1313-27-53,521 lbs0 lbs3,521 lbs
30Ethylene oxide75-21-83,097 lbs0 lbs3,097 lbs
31N-Methyl-2-pyrrolidone872-50-4130 lbs0 lbs2,482 lbs
32Propionaldehyde123-38-6726 lbs0 lbs2,467 lbs
33Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09031 lbs2 lbs1,802 lbs
34Furan110-00-91,574 lbs0 lbs1,574 lbs
35Crotonaldehyde4170-30-31,396 lbs0 lbs1,396 lbs
36Copper And Copper CompoundsN1000 lbs263 lbs1,371 lbs
37Cyclohexane110-82-71,366 lbs0 lbs1,366 lbs
38Chlorine7782-50-51,174 lbs0 lbs1,174 lbs
39Methyl isobutyl ketone108-10-1851 lbs0 lbs851 lbs
40Manganese7439-96-52 lbs532 lbs539 lbs
41Lead7439-92-115 lbs101 lbs378 lbs
42Vinyl acetate108-05-4353 lbs0 lbs360 lbs
43Phenanthrene85-01-8253 lbs0 lbs356 lbs
44sec-Butyl alcohol78-92-2285 lbs0 lbs285 lbs
45Anthracene120-12-749 lbs0 lbs49 lbs
46Mercury7439-97-63 lbs0 lbs47 lbs
47Formic acid64-18-641 lbs0 lbs41 lbs
48Acrolein107-02-829 lbs0 lbs29 lbs
491,2-Butylene oxide106-88-77 lbs0 lbs7 lbs
50Isobutyraldehyde78-84-24 lbs0 lbs4 lbs
51Dioxin and dioxin-like compoundsN1502 lbs0 lbs2 lbs
52Polycyclic aromatic compoundsN5901 lbs0 lbs1 lbs

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