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
1502 OLD UNDERWOOD ST DEER PARK 77536
Elevation
30.66 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: 20.66 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 93% 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)
16.37 million lbs
Extremely High
2508.4x more than typical Houston property
≈ 818 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)
9.45 million lbs
Extremely High
1959.7x 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)
6.92 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)16,365,423 lbs9,450,286 lbs6,915,137 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,139,865 lbs851,455 lbs700,813 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 93% 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), Ethylene, Propylene, Vinyl acetate, Methanol

View the full list of 85 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (85 chemicals)

#ChemicalCAS#Air (lbs, 10yr)Water (lbs, 10yr)Total (lbs, 10yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs6,391,670 lbs6,391,670 lbs
2Ethylene74-85-13,045,289 lbs0 lbs3,045,289 lbs
3Propylene115-07-12,866,366 lbs0 lbs2,866,366 lbs
4Vinyl acetate108-05-41,056,100 lbs5,684 lbs1,061,784 lbs
5Methanol67-56-1413,608 lbs462,356 lbs875,964 lbs
6Ammonia7664-41-7342,314 lbs10,775 lbs774,569 lbs
7n-Hexane110-54-3608,115 lbs0 lbs608,115 lbs
8Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0207,958 lbs0 lbs207,958 lbs
91,2-Dichloroethane107-06-2177,067 lbs59 lbs177,125 lbs
10Vinyl chloride75-01-480,700 lbs33 lbs80,733 lbs
111,3-Butadiene106-99-069,913 lbs45 lbs69,958 lbs
12Chlorine7782-50-562,773 lbs2,816 lbs65,589 lbs
13Certain glycol ethersN23064,069 lbs0 lbs64,069 lbs
14Ethylene glycol107-21-149,380 lbs9,387 lbs58,767 lbs
15Propylene oxide75-56-953,747 lbs0 lbs53,747 lbs
16Xylene (mixed isomers)1330-20-743,150 lbs0 lbs43,150 lbs
17Methyl iodide74-88-437,993 lbs0 lbs37,993 lbs
18Zinc compoundsN9826,712 lbs28,870 lbs35,583 lbs
19Acetaldehyde75-07-026,687 lbs0 lbs26,687 lbs
20Toluene108-88-324,960 lbs40 lbs25,000 lbs
21Benzene71-43-219,827 lbs42 lbs19,869 lbs
22Butyl acrylate141-32-218,363 lbs0 lbs18,363 lbs
23Maleic anhydride108-31-617,812 lbs0 lbs17,812 lbs
24Hydrogen sulfide7783-06-417,373 lbs0 lbs17,373 lbs
25Formaldehyde50-00-016,402 lbs0 lbs16,402 lbs
26Chlorobenzene108-90-716,036 lbs0 lbs16,036 lbs
27Chloroethane75-00-314,531 lbs0 lbs14,531 lbs
28Boron trifluoride7637-07-214,201 lbs0 lbs14,201 lbs
29Cyclohexane110-82-714,194 lbs0 lbs14,194 lbs
30Chloroform67-66-311,497 lbs51 lbs11,547 lbs
31Trade SecretTRD SECRT9,705 lbs0 lbs9,705 lbs
32N,N-Dimethylformamide68-12-29,020 lbs0 lbs9,020 lbs
33Carbon tetrachloride56-23-57,770 lbs0 lbs7,770 lbs
34Isoprene78-79-55,909 lbs0 lbs5,909 lbs
35DiisocyanatesN1204,282 lbs0 lbs4,282 lbs
361,1,2-Trichloroethane79-00-52,836 lbs0 lbs2,836 lbs
37Ethylidene dichloride75-34-32,180 lbs0 lbs2,180 lbs
38Di(2-ethylhexyl) phthalate117-81-72,020 lbs0 lbs2,020 lbs
39Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N0400 lbs1,936 lbs1,936 lbs
401,2-Dichloroethylene540-59-01,428 lbs0 lbs1,428 lbs
41Nonylphenol EthoxylatesN5351,381 lbs0 lbs1,381 lbs
42Styrene100-42-51,233 lbs0 lbs1,233 lbs
43Vinylidene chloride75-35-4693 lbs0 lbs693 lbs
44Hydrogen cyanide74-90-8596 lbs0 lbs596 lbs
45Copper compoundsN1000 lbs586 lbs586 lbs
46Naphthalene91-20-3493 lbs33 lbs526 lbs
47Aluminum (fume or dust)7429-90-5462 lbs0 lbs462 lbs
48Ethylbenzene100-41-4413 lbs32 lbs445 lbs
49Copper And Copper CompoundsN1000 lbs351 lbs351 lbs
50Acrylic acid79-10-7348 lbs0 lbs348 lbs
51Chloromethane74-87-3326 lbs0 lbs326 lbs
52Nitric acid7697-37-2309 lbs0 lbs309 lbs
53Tetrachloroethylene127-18-4294 lbs0 lbs294 lbs
54Dicyclopentadiene77-73-6290 lbs0 lbs290 lbs
551,1,2,2-Tetrachloroethane79-34-5290 lbs0 lbs290 lbs
56Pentachloroethane76-01-7245 lbs0 lbs245 lbs
57Barium And Barium CompoundsN0400 lbs99 lbs99 lbs
58Lead compoundsN42034 lbs54 lbs88 lbs
59Trichloroethylene79-01-684 lbs0 lbs84 lbs
60Chromium compounds (except for chromite ore mined in the Transvaal Region)N0900 lbs81 lbs81 lbs
61Hexachloroethane67-72-181 lbs0 lbs81 lbs
62Dioxin and dioxin-like compoundsN1500 lbs60 lbs61 lbs
63NonylphenolN53061 lbs0 lbs61 lbs
64Diethanolamine111-42-257 lbs0 lbs57 lbs
65Methyl acrylate96-33-347 lbs0 lbs47 lbs
66Ethyl acrylate140-88-535 lbs0 lbs35 lbs
67Triethylamine121-44-834 lbs0 lbs34 lbs
68Hexachlorobenzene118-74-115 lbs14 lbs29 lbs
69n-Butyl alcohol71-36-328 lbs0 lbs28 lbs
70Manganese compoundsN45026 lbs0 lbs26 lbs
71Methyl methacrylate80-62-625 lbs0 lbs25 lbs
72Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs25 lbs25 lbs
73Diphenylamine122-39-410 lbs14 lbs24 lbs
74Dichloromethane75-09-222 lbs0 lbs22 lbs
75Lead And Lead CompoundsN42011 lbs10 lbs22 lbs
76sec-Butyl alcohol78-92-221 lbs0 lbs21 lbs
771,2,4-Trimethylbenzene95-63-610 lbs0 lbs10 lbs
78Lead7439-92-10 lbs10 lbs10 lbs
79Chloroprene126-99-810 lbs0 lbs10 lbs
80Polycyclic aromatic compoundsN5907 lbs0 lbs7 lbs
81N-Methyl-2-pyrrolidone872-50-43 lbs0 lbs3 lbs
82Bis(2-chloroethyl) ether111-44-42 lbs0 lbs2 lbs
83Mercury compoundsN4582 lbs0 lbs2 lbs
84Benzo[g,h,i]perylene191-24-20 lbs1 lbs1 lbs
85Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs

Top chemicals released near this property (2024 only):

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

View the full list of 69 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (69 chemicals)

#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Nitrate compounds (water dissociable; reportable only when in aqueous solution)N5110 lbs629,081 lbs629,081 lbs
2Ammonia7664-41-749,914 lbs503 lbs475,930 lbs
3Ethylene74-85-1300,945 lbs0 lbs300,945 lbs
4Propylene115-07-1260,344 lbs0 lbs260,344 lbs
5Maleic anhydride108-31-62,270 lbs0 lbs135,590 lbs
6Methanol67-56-130,477 lbs69,184 lbs105,112 lbs
7Vinyl acetate108-05-481,700 lbs410 lbs82,473 lbs
8n-Hexane110-54-365,408 lbs0 lbs66,750 lbs
91,2-Dichloroethane107-06-212,354 lbs15 lbs12,708 lbs
10Copper And Copper CompoundsN1000 lbs209 lbs5,782 lbs
11Trade SecretTRD SECRT5,677 lbs0 lbs5,677 lbs
12Chlorine7782-50-55,622 lbs0 lbs5,622 lbs
13Vinyl chloride75-01-44,880 lbs2 lbs4,881 lbs
14Zinc compoundsN982426 lbs1,345 lbs4,477 lbs
151,3-Butadiene106-99-03,951 lbs9 lbs3,960 lbs
16Polycyclic aromatic compoundsN5903 lbs0 lbs3,624 lbs
17Formaldehyde50-00-03,363 lbs0 lbs3,363 lbs
18Toluene108-88-32,074 lbs6 lbs3,224 lbs
19Certain glycol ethersN2303,026 lbs0 lbs3,026 lbs
20Cyclohexane110-82-71,726 lbs0 lbs2,621 lbs
21Dioxin and dioxin-like compoundsN1500 lbs7 lbs2,327 lbs
22Benzene71-43-21,725 lbs3 lbs2,171 lbs
23DiisocyanatesN1201,843 lbs0 lbs1,843 lbs
24Ethyl acrylate140-88-56 lbs0 lbs1,809 lbs
25Ethylene glycol107-21-11,648 lbs0 lbs1,648 lbs
26Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs0 lbs1,622 lbs
27Methyl iodide74-88-41,600 lbs0 lbs1,600 lbs
28Chloroethane75-00-31,506 lbs0 lbs1,506 lbs
29Boron trifluoride7637-07-21,192 lbs0 lbs1,192 lbs
30Xylene (mixed isomers)1330-20-71,144 lbs0 lbs1,144 lbs
31Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-01,072 lbs0 lbs1,072 lbs
32Chloroform67-66-3798 lbs9 lbs817 lbs
33Butyl acrylate141-32-2597 lbs0 lbs597 lbs
34Acetaldehyde75-07-0585 lbs0 lbs585 lbs
35Carbon tetrachloride56-23-5572 lbs0 lbs580 lbs
36Isoprene78-79-5578 lbs0 lbs578 lbs
37N,N-Dimethylformamide68-12-2570 lbs0 lbs570 lbs
38Lead7439-92-10 lbs5 lbs495 lbs
39NonylphenolN5302 lbs0 lbs374 lbs
40Ethylbenzene100-41-4360 lbs2 lbs367 lbs
41Naphthalene91-20-3270 lbs18 lbs288 lbs
42Hydrogen sulfide7783-06-4235 lbs0 lbs235 lbs
431,1,2-Trichloroethane79-00-5227 lbs0 lbs229 lbs
44Styrene100-42-5143 lbs0 lbs157 lbs
45Ethylidene dichloride75-34-3156 lbs0 lbs156 lbs
46Tetrachloroethylene127-18-424 lbs0 lbs139 lbs
47Acrylic acid79-10-7127 lbs0 lbs127 lbs
481,2-Dichloroethylene540-59-0103 lbs0 lbs103 lbs
49Vinylidene chloride75-35-449 lbs0 lbs49 lbs
50Methyl isobutyl ketone108-10-10 lbs0 lbs44 lbs
51Benzo[g,h,i]perylene191-24-20 lbs0 lbs38 lbs
52Nitric acid7697-37-231 lbs0 lbs31 lbs
53Dicyclopentadiene77-73-630 lbs0 lbs30 lbs
54Aluminum (fume or dust)7429-90-526 lbs0 lbs26 lbs
551,1,2,2-Tetrachloroethane79-34-524 lbs0 lbs24 lbs
56Pentachloroethane76-01-720 lbs0 lbs20 lbs
57Asbestos (friable)1332-21-40 lbs0 lbs17 lbs
58Mercury And Mercury CompoundsN4581 lbs0 lbs12 lbs
59Trichloroethylene79-01-68 lbs0 lbs12 lbs
60Lead And Lead CompoundsN4200 lbs4 lbs10 lbs
61n-Butyl alcohol71-36-37 lbs0 lbs7 lbs
62Hexachloroethane67-72-17 lbs0 lbs7 lbs
63sec-Butyl alcohol78-92-25 lbs0 lbs5 lbs
64Chlorobenzene108-90-70 lbs0 lbs4 lbs
65Hexachlorobenzene118-74-11 lbs1 lbs2 lbs
66Dichloromethane75-09-22 lbs0 lbs2 lbs
67Polychlorinated biphenyls1336-36-30 lbs0 lbs1 lbs
68Propylene oxide75-56-91 lbs0 lbs1 lbs
69Chloroprene126-99-81 lbs0 lbs1 lbs

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