Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 104 Grand St, Channelview, TX 77530

HCAD #0641850000007
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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
104 Grand St, Channelview, TX 77530
Building Size
2,416sqft
Total structure area from HCAD building records.
Elevation
18.84 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)
28.68 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
272.9 acres
92.5% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$10,966
Based on HCAD building value of $16,871.
Depth-Damage (Neighborhood)
$62,627
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
20.9th percentile
Property Pollution Ranking
High
Higher pollution than 79% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
756 thousandlbs
Extremely High
115.9x more than typical Houston property
≈ 38 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
755 thousandlbs
Extremely High
156.7x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
565lbs
High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
12
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)756,023 lbs755,459 lbs565 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)148,849 lbs148,784 lbs63 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 79% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile.
📋
Top chemicals released near this property (past 10 years):
Ethylene glycol, 1,2,4-Trimethylbenzene, Xylene (mixed isomers), n-Butyl alcohol, Certain glycol ethers
View the full list of 25 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(25 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ethylene glycol107-21-1342,485 lbs0 lbs342,485 lbs
21,2,4-Trimethylbenzene95-63-6132,436 lbs2 lbs135,230 lbs
3Xylene (mixed isomers)1330-20-771,929 lbs17 lbs79,409 lbs
4n-Butyl alcohol71-36-366,005 lbs0 lbs66,005 lbs
5Certain glycol ethersN23035,260 lbs0 lbs35,260 lbs
6n-Hexane110-54-326,801 lbs0 lbs29,244 lbs
7Naphthalene91-20-321,971 lbs1 lbs24,137 lbs
8Cyclohexane110-82-717,804 lbs0 lbs23,388 lbs
9Ethylbenzene100-41-416,100 lbs4 lbs16,946 lbs
10Toluene108-88-36,955 lbs92 lbs10,187 lbs
11Benzene71-43-28,405 lbs84 lbs10,060 lbs
12Chlorine7782-50-54,596 lbs0 lbs4,596 lbs
13Chromium compounds (except for chromite ore mined in the Transvaal Region)N0901,236 lbs41 lbs1,277 lbs
14Methanol67-56-11,071 lbs0 lbs1,071 lbs
15Chromium7440-47-3879 lbs102 lbs981 lbs
16Hydrogen sulfide7783-06-4726 lbs0 lbs726 lbs
17Nickel7440-02-0386 lbs106 lbs492 lbs
18Antimony compoundsN010235 lbs0 lbs235 lbs
19Cumene98-82-8107 lbs0 lbs108 lbs
20Copper7440-50-815 lbs43 lbs58 lbs
21Manganese7439-96-524 lbs22 lbs46 lbs
22Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs40 lbs40 lbs
23Lead compoundsN42025 lbs4 lbs29 lbs
24Lead7439-92-13 lbs7 lbs10 lbs
25Zinc compoundsN9825 lbs0 lbs6 lbs
📋
Top chemicals released near this property (2024 only):
Ethylene glycol, n-Butyl alcohol, 1,2,4-Trimethylbenzene, Xylene (mixed isomers), n-Hexane
View the full list of 16 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(16 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene glycol107-21-1110,903 lbs0 lbs110,903 lbs
2n-Butyl alcohol71-36-39,350 lbs0 lbs9,350 lbs
31,2,4-Trimethylbenzene95-63-67,218 lbs0 lbs7,218 lbs
4Xylene (mixed isomers)1330-20-75,829 lbs0 lbs5,830 lbs
5n-Hexane110-54-33,943 lbs0 lbs3,943 lbs
6Certain glycol ethersN2302,726 lbs0 lbs2,726 lbs
7Naphthalene91-20-32,693 lbs0 lbs2,693 lbs
8Toluene108-88-31,758 lbs0 lbs1,758 lbs
9Ethylbenzene100-41-41,348 lbs0 lbs1,348 lbs
10Benzene71-43-21,254 lbs0 lbs1,254 lbs
11Cyclohexane110-82-71,137 lbs0 lbs1,137 lbs
12Chlorine7782-50-5428 lbs0 lbs428 lbs
13Chromium7440-47-3136 lbs32 lbs167 lbs
14Nickel7440-02-036 lbs20 lbs57 lbs
15Cumene98-82-825 lbs0 lbs26 lbs
16Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0900 lbs11 lbs11 lbs
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