Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 315 Sylvan Ln, Channelview, TX 77530

HCAD #0660890030021
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🌍Environmental Assessment

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.

🌊Flood Risk Analysis
FEMA Zone X
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
315 Sylvan Ln, Channelview, TX 77530
Building Size
2,896sqft
Total structure area from HCAD building records.
Elevation
22.58 ft
Height above sea level from USGS data.
FEMA Flood Zone
X
Moderate to Low Risk - Outside 500-year floodplain
Overall Risk
Very High
Property flooded at 9.84ft depth.
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 High
Flood Depth
9.84 ft±0.5 ft
Depth of water above ground level.
Water Surface Elevation (WSE)
32.43 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
189.3 acres
64.2% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$101,784
Based on HCAD building value of $156,591.
Depth-Damage (Neighborhood)
$102,797
Based on neighborhood replacement cost.
Analysis Method
COG Combined 5000 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 Flooded
Flood Depth: 9.84 feet
Severity
Severe
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.

#1
Minimal flood hazard area - property outside mapped high-risk zones
#2
Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas
#3
Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries
#4
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information
🏭Industrial Pollution Exposure
8.7th percentile
Property Pollution Ranking
Very High
Higher pollution than 91% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
10.83 millionlbs
Extremely High
1660.7x more than typical Houston property
≈ 542 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
10.82 millionlbs
Extremely High
2242.8x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
19 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
5
Industrial facilities within 2 miles
💡
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)10,834,614 lbs10,815,395 lbs19,219 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)2,991,350 lbs1,150,504 lbs1,264 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 91% 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 62 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(62 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Methanol67-56-1483,854 lbs0 lbs20,435,850 lbs
2Ethylbenzene100-41-4783,856 lbs6 lbs6,652,631 lbs
3Acetophenone98-86-2147,701 lbs0 lbs6,062,471 lbs
4Styrene100-42-5484,609 lbs0 lbs2,936,820 lbs
51,3-Butadiene106-99-01,892,530 lbs0 lbs1,892,530 lbs
6Allyl alcohol107-18-656,687 lbs0 lbs1,530,217 lbs
7Benzene71-43-2860,478 lbs96 lbs1,157,618 lbs
8Propylene115-07-11,008,558 lbs0 lbs1,008,558 lbs
9Propylene oxide75-56-9750,217 lbs0 lbs823,893 lbs
10Ammonia7664-41-7797,177 lbs9,985 lbs807,162 lbs
11Phenol108-95-22,427 lbs0 lbs742,109 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
16Toluene108-88-3256,088 lbs7 lbs512,284 lbs
17n-Butyl alcohol71-36-319,952 lbs0 lbs482,513 lbs
18N-Methyl-2-pyrrolidone872-50-42,753 lbs0 lbs427,839 lbs
19Naphthalene91-20-3291,919 lbs0 lbs291,919 lbs
20Methyl tert-butyl ether1634-04-4230,136 lbs0 lbs251,110 lbs
21n-Hexane110-54-3218,300 lbs6 lbs218,306 lbs
22Xylene (mixed isomers)1330-20-7181,027 lbs6 lbs184,969 lbs
23Isoprene78-79-5159,549 lbs0 lbs159,549 lbs
24Cumene98-82-894,704 lbs0 lbs125,190 lbs
25Tetrachloroethylene127-18-4105,005 lbs0 lbs105,005 lbs
261,2,4-Trimethylbenzene95-63-661,742 lbs6 lbs61,748 lbs
27Dicyclopentadiene77-73-650,986 lbs5 lbs50,991 lbs
28Propionaldehyde123-38-613,598 lbs0 lbs36,618 lbs
29Ethylene oxide75-21-826,715 lbs0 lbs26,715 lbs
30Chlorine7782-50-515,020 lbs0 lbs15,020 lbs
31Molybdenum trioxide1313-27-510,461 lbs0 lbs10,461 lbs
32Cyclohexane110-82-78,230 lbs5 lbs8,235 lbs
33Cyclohexanol108-93-05,782 lbs0 lbs5,782 lbs
34Maleic anhydride108-31-65,323 lbs0 lbs5,323 lbs
35Vinyl acetate108-05-44,434 lbs0 lbs4,434 lbs
36Phenanthrene85-01-83,788 lbs0 lbs3,788 lbs
37Copper compoundsN1000 lbs3,694 lbs3,694 lbs
38Furan110-00-92,941 lbs0 lbs2,941 lbs
39Nickel7440-02-0315 lbs2,527 lbs2,842 lbs
40Crotonaldehyde4170-30-32,750 lbs0 lbs2,750 lbs
41Chromium compounds (except for chromite ore mined in the Transvaal Region)N090356 lbs960 lbs1,316 lbs
42sec-Butyl alcohol78-92-2948 lbs0 lbs948 lbs
43Copper And Copper CompoundsN1000 lbs917 lbs917 lbs
44Chromium7440-47-3817 lbs26 lbs843 lbs
45Manganese7439-96-5500 lbs270 lbs770 lbs
46Hydrogen sulfide7783-06-4750 lbs5 lbs755 lbs
47Formic acid64-18-6703 lbs0 lbs703 lbs
48Anthracene120-12-7700 lbs0 lbs700 lbs
49Ethylene glycol107-21-1505 lbs0 lbs505 lbs
50p-Xylene106-42-3500 lbs0 lbs500 lbs
51Lead7439-92-153 lbs413 lbs466 lbs
52Acrolein107-02-8445 lbs0 lbs445 lbs
53Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N090160 lbs282 lbs442 lbs
54Polycyclic aromatic compoundsN590182 lbs2 lbs184 lbs
551,2-Butylene oxide106-88-7164 lbs0 lbs164 lbs
56Barium compounds (except for barium sulfate (CAS No. 7727-43-7))N040125 lbs0 lbs125 lbs
57Barium And Barium CompoundsN040125 lbs0 lbs125 lbs
58Mercury7439-97-622 lbs0 lbs55 lbs
59Dioxin and dioxin-like compoundsN15018 lbs0 lbs18 lbs
60Isobutyraldehyde78-84-28 lbs0 lbs8 lbs
61Methyl methacrylate80-62-65 lbs0 lbs5 lbs
62Acetamide60-35-51 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)
1Methanol67-56-146,154 lbs0 lbs762,818 lbs
2Ethylbenzene100-41-481,932 lbs0 lbs513,861 lbs
3Acetophenone98-86-210,585 lbs0 lbs370,702 lbs
41,3-Butadiene106-99-0228,612 lbs0 lbs228,612 lbs
5Benzene71-43-2105,905 lbs1 lbs131,873 lbs
6Propylene115-07-1126,126 lbs0 lbs126,126 lbs
7Styrene100-42-525,299 lbs0 lbs118,112 lbs
8Acetonitrile75-05-828,355 lbs0 lbs101,434 lbs
9Propylene oxide75-56-985,097 lbs0 lbs94,962 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 lbs35,924 lbs
15Methyl tert-butyl ether1634-04-431,577 lbs0 lbs32,921 lbs
16n-Hexane110-54-328,863 lbs0 lbs28,863 lbs
17Naphthalene91-20-328,207 lbs0 lbs28,207 lbs
18tert-Butyl alcohol75-65-025,572 lbs0 lbs27,089 lbs
19Xylene (mixed isomers)1330-20-719,567 lbs0 lbs19,567 lbs
20Isoprene78-79-519,021 lbs0 lbs19,021 lbs
21n-Butyl alcohol71-36-3169 lbs0 lbs14,730 lbs
22Tetrachloroethylene127-18-412,768 lbs0 lbs12,768 lbs
23Phenol108-95-2154 lbs0 lbs6,663 lbs
241,2,4-Trimethylbenzene95-63-64,257 lbs0 lbs4,257 lbs
25Dicyclopentadiene77-73-64,111 lbs0 lbs4,111 lbs
26Cumene98-82-81,675 lbs0 lbs3,676 lbs
27Molybdenum trioxide1313-27-53,521 lbs0 lbs3,521 lbs
28Ethylene oxide75-21-83,097 lbs0 lbs3,097 lbs
29N-Methyl-2-pyrrolidone872-50-4130 lbs0 lbs2,482 lbs
30Propionaldehyde123-38-6726 lbs0 lbs2,467 lbs
31Furan110-00-91,574 lbs0 lbs1,574 lbs
32Crotonaldehyde4170-30-31,396 lbs0 lbs1,396 lbs
33Cyclohexane110-82-71,366 lbs0 lbs1,366 lbs
34Chlorine7782-50-51,174 lbs0 lbs1,174 lbs
35Vinyl acetate108-05-4603 lbs0 lbs603 lbs
36p-Xylene106-42-3500 lbs0 lbs500 lbs
37sec-Butyl alcohol78-92-2285 lbs0 lbs285 lbs
38Copper And Copper CompoundsN1000 lbs263 lbs263 lbs
39Phenanthrene85-01-8253 lbs0 lbs253 lbs
40Nickel7440-02-036 lbs103 lbs139 lbs
41Chromium7440-47-3136 lbs0 lbs136 lbs
42Lead7439-92-115 lbs69 lbs84 lbs
43Anthracene120-12-749 lbs0 lbs49 lbs
44Formic acid64-18-641 lbs0 lbs41 lbs
45Barium And Barium CompoundsN04035 lbs0 lbs35 lbs
46Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09031 lbs2 lbs33 lbs
47Acrolein107-02-829 lbs0 lbs29 lbs
481,2-Butylene oxide106-88-77 lbs0 lbs7 lbs
49Isobutyraldehyde78-84-24 lbs0 lbs4 lbs
50Mercury7439-97-63 lbs0 lbs3 lbs
51Dioxin and dioxin-like compoundsN1502 lbs0 lbs2 lbs
52Polycyclic aromatic compoundsN5901 lbs0 lbs1 lbs
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