Home > Analysis: 805 Martha St, Deer Park, TX 77536
📊 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
805 MARTHA ST DEER PARK 77536
Building Size
2,021 sqft
Total structure area from HCAD building records.
Elevation
23.4 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: 13.4 feet
Severity: Safe
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 ToolFlood 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)
22.74 million lbs
Extremely High
3485.3x more than typical Houston property
≈ 1.1K dump trucks of chemicals within 2 miles
≈ 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)
14.69 million lbs
Extremely High
3045.9x 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)
7.63 million lbs
Extremely High
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.
| Period | Total | Air | Water |
|---|---|---|---|
| Typical Houston Property (2014-2024) | 6,524 lbs | 4,822 lbs | 0 lbs |
| This Property (2014-2024) | 22,738,912 lbs | 14,688,329 lbs | 7,629,026 lbs |
| Typical Houston Property (2024 Only) | 2 lbs | 1 lbs | 0 lbs |
| This Property (2024 Only) | 3,036,286 lbs | 1,704,802 lbs | 264,051 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, Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
View the full list of 109 chemicals below.
Chemicals Released (2014-2024, 10-Year Total) (109 chemicals)
| # | Chemical | CAS# | Air (lbs, 10yr) | Water (lbs, 10yr) | Total (lbs, 10yr) |
|---|---|---|---|---|---|
| 1 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | N511 | 7 | 7,200,539 | 7,200,546 |
| 2 | Ethylene | 74-85-1 | 2,715,874 | 0 | 2,715,874 |
| 3 | Propylene | 115-07-1 | 1,670,740 | 0 | 1,670,740 |
| 4 | Ammonia | 7664-41-7 | 1,188,807 | 32,748 | 1,643,035 |
| 5 | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7664-93-9 | 1,081,942 | 0 | 1,081,942 |
| 6 | 1,3-Butadiene | 106-99-0 | 1,021,400 | 45 | 1,021,445 |
| 7 | Cumene | 98-82-8 | 851,544 | 882 | 852,426 |
| 8 | Methanol | 67-56-1 | 569,165 | 133,638 | 702,803 |
| 9 | Methyl methacrylate | 80-62-6 | 656,896 | 0 | 656,896 |
| 10 | Phenol | 108-95-2 | 634,156 | 1,108 | 635,264 |
| 11 | Toluene | 108-88-3 | 520,715 | 199 | 520,914 |
| 12 | Benzene | 71-43-2 | 434,346 | 242 | 434,588 |
| 13 | Hydrogen cyanide | 74-90-8 | 413,524 | 4,587 | 418,111 |
| 14 | n-Hexane | 110-54-3 | 364,991 | 10 | 365,001 |
| 15 | Xylene (mixed isomers) | 1330-20-7 | 255,366 | 179 | 255,545 |
| 16 | Butyl acrylate | 141-32-2 | 246,385 | 0 | 246,385 |
| 17 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7647-01-0 | 234,060 | 0 | 234,060 |
| 18 | Hydrogen sulfide | 7783-06-4 | 211,383 | 2,545 | 213,928 |
| 19 | n-Butyl alcohol | 71-36-3 | 196,351 | 0 | 196,351 |
| 20 | Vinyl chloride | 75-01-4 | 166,484 | 46 | 166,529 |
| 21 | Acrylic acid | 79-10-7 | 127,984 | 0 | 127,984 |
| 22 | 4,4'-Isopropylidenediphenol | 80-05-7 | 125,700 | 0 | 125,700 |
| 23 | 1,2-Dichloroethane | 107-06-2 | 125,688 | 0 | 125,688 |
| 24 | Epichlorohydrin | 106-89-8 | 121,011 | 3,811 | 124,822 |
| 25 | Sodium nitrite | 7632-00-0 | 0 | 102,300 | 102,300 |
| 26 | Acetonitrile | 75-05-8 | 83,752 | 12,219 | 95,971 |
| 27 | Acetaldehyde | 75-07-0 | 83,747 | 1,398 | 85,145 |
| 28 | Ethylbenzene | 100-41-4 | 73,430 | 222 | 73,652 |
| 29 | Zinc compounds | N982 | 7,165 | 63,922 | 71,088 |
| 30 | Isoprene | 78-79-5 | 70,540 | 137 | 70,677 |
| 31 | Propylene oxide | 75-56-9 | 53,747 | 0 | 53,747 |
| 32 | Formaldehyde | 50-00-0 | 44,351 | 0 | 44,351 |
| 33 | Ethylene glycol | 107-21-1 | 31,251 | 9,387 | 40,638 |
| 34 | Ethyl acrylate | 140-88-5 | 36,082 | 0 | 36,082 |
| 35 | Diethanolamine | 111-42-2 | 35,781 | 0 | 35,781 |
| 36 | Cyclohexane | 110-82-7 | 26,201 | 284 | 26,485 |
| 37 | Naphthalene | 91-20-3 | 21,426 | 206 | 21,632 |
| 38 | Dichloromethane | 75-09-2 | 19,581 | 39 | 19,620 |
| 39 | Methyl isobutyl ketone | 108-10-1 | 17,924 | 2 | 17,926 |
| 40 | Copper compounds | N100 | 0 | 13,984 | 13,984 |
| 41 | Chloroethane | 75-00-3 | 13,659 | 0 | 13,659 |
| 42 | Maleic anhydride | 108-31-6 | 12,243 | 0 | 12,243 |
| 43 | Chlorine | 7782-50-5 | 11,978 | 0 | 11,978 |
| 44 | Cumene hydroperoxide | 80-15-9 | 11,006 | 0 | 11,006 |
| 45 | Cyanide compounds | N106 | 0 | 9,834 | 9,834 |
| 46 | Trade Secret | TRD SECRT | 9,705 | 0 | 9,705 |
| 47 | Vinyl acetate | 108-05-4 | 9,003 | 0 | 9,003 |
| 48 | 1,2,4-Trimethylbenzene | 95-63-6 | 8,919 | 0 | 8,919 |
| 49 | Dicyclopentadiene | 77-73-6 | 8,670 | 0 | 8,670 |
| 50 | 2-Methyllactonitrile | 75-86-5 | 8,411 | 0 | 8,411 |
| 51 | Copper And Copper Compounds | N100 | 1 | 8,388 | 8,389 |
| 52 | Acetophenone | 98-86-2 | 6,714 | 1,462 | 8,176 |
| 53 | Allyl alcohol | 107-18-6 | 7,427 | 626 | 8,053 |
| 54 | sec-Butyl alcohol | 78-92-2 | 1,946 | 5,600 | 7,546 |
| 55 | Glycidol | 556-52-5 | 2,841 | 4,410 | 7,251 |
| 56 | Acrylonitrile | 107-13-1 | 6,971 | 0 | 6,971 |
| 57 | Manganese compounds | N450 | 137 | 5,037 | 5,174 |
| 58 | Styrene | 100-42-5 | 4,646 | 16 | 4,662 |
| 59 | Tetrachloroethylene | 127-18-4 | 4,241 | 176 | 4,417 |
| 60 | Diisocyanates | N120 | 4,007 | 0 | 4,007 |
| 61 | Nickel compounds | N495 | 80 | 3,764 | 3,844 |
| 62 | Formic acid | 64-18-6 | 2,328 | 0 | 2,328 |
| 63 | Certain glycol ethers | N230 | 1,969 | 0 | 1,969 |
| 64 | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | N040 | 0 | 1,936 | 1,936 |
| 65 | Lead compounds | N420 | 509 | 1,376 | 1,886 |
| 66 | Phenanthrene | 85-01-8 | 1,547 | 159 | 1,706 |
| 67 | 1,1,2-Trichloroethane | 79-00-5 | 1,537 | 0 | 1,537 |
| 68 | Nonylphenol Ethoxylates | N535 | 1,381 | 0 | 1,381 |
| 69 | Bis(2-chloroethyl) ether | 111-44-4 | 950 | 0 | 950 |
| 70 | Polycyclic aromatic compounds | N590 | 576 | 130 | 782 |
| 71 | Lead And Lead Compounds | N420 | 267 | 421 | 689 |
| 72 | Chloroform | 67-66-3 | 638 | 0 | 638 |
| 73 | Anthracene | 120-12-7 | 534 | 70 | 604 |
| 74 | Trichloroethylene | 79-01-6 | 603 | 0 | 603 |
| 75 | Cresol (mixed isomers) | 1319-77-3 | 430 | 146 | 576 |
| 76 | Aluminum (fume or dust) | 7429-90-5 | 462 | 0 | 462 |
| 77 | Hydroquinone | 123-31-9 | 388 | 0 | 388 |
| 78 | Acrolein | 107-02-8 | 326 | 0 | 326 |
| 79 | Chloromethane | 74-87-3 | 326 | 0 | 326 |
| 80 | Pentachloroethane | 76-01-7 | 323 | 0 | 323 |
| 81 | Mercury compounds | N458 | 105 | 212 | 317 |
| 82 | Mercury And Mercury Compounds | N458 | 36 | 195 | 230 |
| 83 | 1,1,2,2-Tetrachloroethane | 79-34-5 | 219 | 0 | 219 |
| 84 | Benzo[g,h,i]perylene | 191-24-2 | 96 | 74 | 170 |
| 85 | Cobalt compounds | N096 | 33 | 89 | 122 |
| 86 | Barium And Barium Compounds | N040 | 0 | 99 | 99 |
| 87 | Carbon disulfide | 75-15-0 | 84 | 0 | 84 |
| 88 | Chlorobenzene | 108-90-7 | 77 | 0 | 77 |
| 89 | 1,2-Dichloroethylene | 540-59-0 | 75 | 0 | 75 |
| 90 | Nonylphenol | N530 | 61 | 0 | 61 |
| 91 | Chloroprene | 126-99-8 | 55 | 0 | 55 |
| 92 | Nitric acid | 7697-37-2 | 49 | 0 | 49 |
| 93 | Methyl acrylate | 96-33-3 | 47 | 0 | 47 |
| 94 | Ethylidene dichloride | 75-34-3 | 37 | 0 | 37 |
| 95 | Cobalt And Cobalt Compounds | N096 | 12 | 24 | 36 |
| 96 | Triethylamine | 121-44-8 | 34 | 0 | 34 |
| 97 | Chromium | 7440-47-3 | 0 | 33 | 33 |
| 98 | Nickel | 7440-02-0 | 0 | 31 | 31 |
| 99 | Dioxin and dioxin-like compounds | N150 | 8 | 23 | 31 |
| 100 | Carbon tetrachloride | 56-23-5 | 27 | 0 | 27 |
| 101 | Diphenylamine | 122-39-4 | 10 | 14 | 24 |
| 102 | Hexachloroethane | 67-72-1 | 16 | 0 | 16 |
| 103 | Vinylidene chloride | 75-35-4 | 15 | 0 | 15 |
| 104 | Boron trifluoride | 7637-07-2 | 11 | 0 | 11 |
| 105 | Propionaldehyde | 123-38-6 | 8 | 0 | 8 |
| 106 | trans-1,4-Dichloro-2-butene | 110-57-6 | 7 | 0 | 7 |
| 107 | Hexachlorobenzene | 118-74-1 | 5 | 0 | 5 |
| 108 | N-Methyl-2-pyrrolidone | 872-50-4 | 3 | 0 | 3 |
| 109 | Acetamide | 60-35-5 | 2 | 0 | 2 |
Top chemicals released near this property (2024 only):
Ethylene, Ammonia, Methyl methacrylate, Propylene, Nitrate compounds (water dissociable; reportable only when in aqueous solution)
View the full list of 92 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only) (92 chemicals)
| # | Chemical | CAS# | Air (lbs/yr) | Water (lbs/yr) | Total (lbs/yr) |
|---|---|---|---|---|---|
| 1 | Ethylene | 74-85-1 | 602,713 | 0 | 602,713 |
| 2 | Ammonia | 7664-41-7 | 85,326 | 3,383 | 526,667 |
| 3 | Methyl methacrylate | 80-62-6 | 60,017 | 0 | 414,676 |
| 4 | Propylene | 115-07-1 | 217,109 | 0 | 217,109 |
| 5 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | N511 | 0 | 204,942 | 204,942 |
| 6 | Methanol | 67-56-1 | 39,519 | 27,174 | 136,864 |
| 7 | 1,3-Butadiene | 106-99-0 | 108,643 | 9 | 108,652 |
| 8 | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7664-93-9 | 97,000 | 0 | 97,000 |
| 9 | 4,4'-Isopropylidenediphenol | 80-05-7 | 10,300 | 0 | 89,800 |
| 10 | Butyl acrylate | 141-32-2 | 24,361 | 0 | 81,487 |
| 11 | Toluene | 108-88-3 | 52,898 | 10 | 55,253 |
| 12 | Cumene | 98-82-8 | 52,712 | 31 | 52,743 |
| 13 | n-Hexane | 110-54-3 | 42,871 | 10 | 44,223 |
| 14 | Phenol | 108-95-2 | 40,343 | 254 | 42,761 |
| 15 | Benzene | 71-43-2 | 39,601 | 7 | 41,770 |
| 16 | Hydrogen sulfide | 7783-06-4 | 38,758 | 289 | 39,047 |
| 17 | n-Butyl alcohol | 71-36-3 | 30,561 | 0 | 30,561 |
| 18 | Hydrogen cyanide | 74-90-8 | 25,157 | 70 | 30,477 |
| 19 | Xylene (mixed isomers) | 1330-20-7 | 18,400 | 10 | 20,108 |
| 20 | Zinc compounds | N982 | 443 | 9,562 | 18,421 |
| 21 | Diethanolamine | 111-42-2 | 3,059 | 0 | 12,859 |
| 22 | Lead compounds | N420 | 93 | 169 | 12,855 |
| 23 | Epichlorohydrin | 106-89-8 | 12,291 | 331 | 12,622 |
| 24 | Nickel compounds | N495 | 0 | 218 | 11,929 |
| 25 | Vinyl chloride | 75-01-4 | 11,013 | 3 | 11,016 |
| 26 | Acrylic acid | 79-10-7 | 9,951 | 0 | 9,951 |
| 27 | Dichloromethane | 75-09-2 | 9,911 | 10 | 9,922 |
| 28 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7647-01-0 | 9,252 | 0 | 9,252 |
| 29 | 1,2-Dichloroethane | 107-06-2 | 8,530 | 0 | 8,530 |
| 30 | Acetonitrile | 75-05-8 | 4,900 | 3,100 | 8,000 |
| 31 | Trade Secret | TRD SECRT | 5,677 | 0 | 5,677 |
| 32 | Acetaldehyde | 75-07-0 | 5,348 | 161 | 5,590 |
| 33 | Ethyl acrylate | 140-88-5 | 3,769 | 0 | 5,572 |
| 34 | Ethylbenzene | 100-41-4 | 4,620 | 7 | 5,262 |
| 35 | Formaldehyde | 50-00-0 | 4,831 | 0 | 4,831 |
| 36 | Sodium nitrite | 7632-00-0 | 0 | 4,600 | 4,600 |
| 37 | Naphthalene | 91-20-3 | 2,290 | 22 | 4,044 |
| 38 | Polycyclic aromatic compounds | N590 | 12 | 14 | 4,011 |
| 39 | Copper And Copper Compounds | N100 | 0 | 3,809 | 3,832 |
| 40 | Glycidol | 556-52-5 | 1,002 | 2,400 | 3,402 |
| 41 | Cyclohexane | 110-82-7 | 2,424 | 17 | 3,336 |
| 42 | sec-Butyl alcohol | 78-92-2 | 540 | 2,100 | 2,640 |
| 43 | Methyl isobutyl ketone | 108-10-1 | 2,468 | 0 | 2,512 |
| 44 | Isoprene | 78-79-5 | 2,360 | 16 | 2,376 |
| 45 | Diisocyanates | N120 | 1,843 | 0 | 1,843 |
| 46 | Acrylonitrile | 107-13-1 | 1,776 | 0 | 1,776 |
| 47 | Ethylene glycol | 107-21-1 | 1,527 | 0 | 1,527 |
| 48 | Styrene | 100-42-5 | 1,183 | 2 | 1,503 |
| 49 | Chloroethane | 75-00-3 | 1,450 | 0 | 1,450 |
| 50 | 2-Methyllactonitrile | 75-86-5 | 998 | 0 | 998 |
| 51 | Vinyl acetate | 108-05-4 | 766 | 0 | 839 |
| 52 | Maleic anhydride | 108-31-6 | 701 | 0 | 701 |
| 53 | Acetophenone | 98-86-2 | 188 | 510 | 698 |
| 54 | 1,2,4-Trimethylbenzene | 95-63-6 | 546 | 0 | 546 |
| 55 | Dicyclopentadiene | 77-73-6 | 493 | 0 | 503 |
| 56 | Cyanide compounds | N106 | 0 | 396 | 418 |
| 57 | Manganese compounds | N450 | 37 | 350 | 387 |
| 58 | Cumene hydroperoxide | 80-15-9 | 384 | 0 | 384 |
| 59 | Nonylphenol | N530 | 2 | 0 | 374 |
| 60 | Benzo[g,h,i]perylene | 191-24-2 | 0 | 1 | 372 |
| 61 | Certain glycol ethers | N230 | 326 | 0 | 326 |
| 62 | Chlorine | 7782-50-5 | 311 | 0 | 311 |
| 63 | Formic acid | 64-18-6 | 291 | 0 | 291 |
| 64 | Tetrachloroethylene | 127-18-4 | 282 | 4 | 286 |
| 65 | 1,1,2-Trichloroethane | 79-00-5 | 166 | 0 | 166 |
| 66 | Bis(2-chloroethyl) ether | 111-44-4 | 96 | 0 | 96 |
| 67 | Hydroquinone | 123-31-9 | 84 | 0 | 84 |
| 68 | Vanadium compounds | N770 | 0 | 0 | 56 |
| 69 | Mercury compounds | N458 | 0 | 53 | 54 |
| 70 | Dioxin and dioxin-like compounds | N150 | 1 | 0 | 53 |
| 71 | Chloroform | 67-66-3 | 44 | 0 | 44 |
| 72 | Trichloroethylene | 79-01-6 | 43 | 0 | 43 |
| 73 | Lead | 7439-92-1 | 0 | 0 | 38 |
| 74 | Pentachloroethane | 76-01-7 | 36 | 0 | 36 |
| 75 | Mercury And Mercury Compounds | N458 | 17 | 0 | 32 |
| 76 | Acrolein | 107-02-8 | 27 | 0 | 27 |
| 77 | Aluminum (fume or dust) | 7429-90-5 | 26 | 0 | 26 |
| 78 | 1,1,2,2-Tetrachloroethane | 79-34-5 | 24 | 0 | 24 |
| 79 | Chlorobenzene | 108-90-7 | 14 | 0 | 14 |
| 80 | Carbon disulfide | 75-15-0 | 12 | 0 | 12 |
| 81 | Nitric acid | 7697-37-2 | 11 | 0 | 11 |
| 82 | Chromium | 7440-47-3 | 0 | 2 | 8 |
| 83 | Phenanthrene | 85-01-8 | 6 | 1 | 7 |
| 84 | Nickel | 7440-02-0 | 0 | 2 | 6 |
| 85 | 1,2-Dichloroethylene | 540-59-0 | 5 | 0 | 5 |
| 86 | Carbon tetrachloride | 56-23-5 | 4 | 0 | 4 |
| 87 | Chloroprene | 126-99-8 | 3 | 0 | 3 |
| 88 | Hexachloroethane | 67-72-1 | 2 | 0 | 2 |
| 89 | Anthracene | 120-12-7 | 1 | 1 | 2 |
| 90 | Ethylidene dichloride | 75-34-3 | 1 | 0 | 1 |
| 91 | Propylene oxide | 75-56-9 | 1 | 0 | 1 |
| 92 | Hexachlorobenzene | 118-74-1 | 1 | 0 | 1 |