Complete Property Analysis

Environmental risk, tax analysis, and property details for 237 Grand St, Channelview, TX 77530

HCAD #0650910200034

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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

237 Grand St, Channelview, TX 77530

Building Size

2,428sqft

Total structure area from HCAD building records.

Elevation

27.99 ft

Height above sea level from USGS data.

FEMA Flood Zone

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

174.6 acres

59.2% of 500m radius flooded.

Nearest Bayou Stage

N/A

No nearby bayou within monitoring range

Depth-Damage (HCAD Valuation)

Property not flooded. No damage to calculate.

Depth-Damage (Neighborhood)

Property not flooded. No damage to calculate.

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.

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.

Minimal flood hazard area - property outside mapped high-risk zones

Flood insurance available at preferred rates - over 25% of claims occur in low-risk areas

Review official FEMA Flood Insurance Rate Map (FIRM) for detailed flood zone boundaries

Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information

🏭Industrial Pollution Exposure

26.4th percentile

Property Pollution Ranking

Moderate

Higher pollution than 74% of Houston homes

Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.

Industrial Pollution Nearby (10 Years)

390 thousandlbs

Very High

59.8x more than typical Houston property

≈ 20 dump trucks of chemicals within 2 miles

Air Pollution (10 Years)

390 thousandlbs

Very High

80.9x more than typical Houston property

Includes fugitive emissions (leaks) and stack emissions (smokestacks).

Water Pollution (10 Years)

52lbs

Above Typical

Discharges to bayous, streams, and drainage systems.

Facilities Nearby

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.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	390,152 lbs	390,100 lbs	52 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	112,661 lbs	112,659 lbs	0 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

70-79th

5.8%

80-89th

4.3%

90-100thLowest Pollution

34.2%

Higher pollution than 74% 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, Cyclohexane, n-Hexane, Xylene (mixed isomers), Chlorine
View the full list of 15 chemicals below.

Chemicals Released (2014-2024, 10-Year Total)(15 chemicals)

#	Chemical	CAS#	Air (lbs/10yr)	Water (lbs/10yr)	Total (lbs/10yr)
1	Ethylene glycol	107-21-1	342,485 lbs	0 lbs	342,485 lbs
2	Cyclohexane	110-82-7	12,697 lbs	0 lbs	12,697 lbs
3	n-Hexane	110-54-3	10,259 lbs	0 lbs	10,259 lbs
4	Xylene (mixed isomers)	1330-20-7	6,010 lbs	0 lbs	6,010 lbs
5	Chlorine	7782-50-5	4,596 lbs	0 lbs	4,596 lbs
6	Benzene	71-43-2	4,508 lbs	0 lbs	4,508 lbs
7	Ethylbenzene	100-41-4	3,970 lbs	0 lbs	3,970 lbs
8	Toluene	108-88-3	2,431 lbs	0 lbs	2,431 lbs
9	Methanol	67-56-1	1,071 lbs	0 lbs	1,071 lbs
10	Chromium	7440-47-3	817 lbs	26 lbs	843 lbs
11	Naphthalene	91-20-3	826 lbs	0 lbs	827 lbs
12	Nickel	7440-02-0	315 lbs	19 lbs	334 lbs
13	Cumene	98-82-8	107 lbs	0 lbs	108 lbs
14	Lead	7439-92-1	3 lbs	7 lbs	10 lbs
15	Zinc compounds	N982	5 lbs	0 lbs	6 lbs

📋

Top chemicals released near this property (2024 only):
Ethylene glycol, Chlorine, n-Hexane, Cyclohexane, Toluene
View the full list of 12 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only)(12 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Total (lbs/yr)
1	Ethylene glycol	107-21-1	110,903 lbs	110,903 lbs
2	Chlorine	7782-50-5	428 lbs	428 lbs
3	n-Hexane	110-54-3	424 lbs	424 lbs
4	Cyclohexane	110-82-7	254 lbs	254 lbs
5	Toluene	108-88-3	143 lbs	143 lbs
6	Chromium	7440-47-3	136 lbs	136 lbs
7	Naphthalene	91-20-3	108 lbs	108 lbs
8	Xylene (mixed isomers)	1330-20-7	99 lbs	99 lbs
9	Benzene	71-43-2	82 lbs	82 lbs
10	Nickel	7440-02-0	36 lbs	36 lbs
11	Cumene	98-82-8	25 lbs	26 lbs
12	Ethylbenzene	100-41-4	22 lbs	22 lbs