Data-driven insights for local properties

Complete Property Analysis

Environmental risk, tax analysis, and property details for 310 N Witter St, Pasadena, TX 77506

HCAD #0281690000057
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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
310 N Witter St, Pasadena, TX 77506
Elevation
24.85 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)
34.69 ft
Water surface elevation relative to sea level (NAVD88 datum).
Area Inundated
274.4 acres
93.1% of 500m radius flooded.
Nearest Bayou Stage
N/A
No nearby bayou within monitoring range
Depth-Damage (HCAD Valuation)
$190,715
Vacant lot (no building data).
Depth-Damage (Neighborhood)
$0
Vacant lot (no building data).
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
11.2th percentile
Property Pollution Ranking
High
Higher pollution than 89% of Houston homes
Compares pollution within 2mi against 10,000 Houston properties. Lower percentiles = higher pollution.
Industrial Pollution Nearby (10 Years)
5.99 millionlbs
Extremely High
918.5x more than typical Houston property
≈ 300 dump trucks of chemicals within 2 miles
Air Pollution (10 Years)
5.95 millionlbs
Extremely High
1234.1x more than typical Houston property
Includes fugitive emissions (leaks) and stack emissions (smokestacks).
Water Pollution (10 Years)
41 thousandlbs
Extremely High
Discharges to bayous, streams, and drainage systems.
Facilities Nearby
19
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)5,992,479 lbs5,951,270 lbs41,209 lbs
Typical Houston Property (2024 Only)2 lbs1 lbs0 lbs
This Property (2024 Only)364,880 lbs363,393 lbs638 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 89% of Houston homes
Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 10-19th percentile.
📋
Top chemicals released near this property (past 10 years):
Ethylene, n-Hexane, Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Methanol
View the full list of 57 chemicals below.
Chemicals Released (2014-2024, 10-Year Total)(57 chemicals)
#ChemicalCAS#Air (lbs/10yr)Water (lbs/10yr)Total (lbs/10yr)
1Ethylene74-85-11,303,858 lbs0 lbs1,303,858 lbs
2n-Hexane110-54-31,167,945 lbs179 lbs1,168,608 lbs
3Ammonia7664-41-7828,361 lbs33,581 lbs861,942 lbs
4Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-9528,487 lbs0 lbs528,487 lbs
5Methanol67-56-1334,026 lbs0 lbs334,026 lbs
6Propylene115-07-1271,756 lbs0 lbs271,756 lbs
7Xylene (mixed isomers)1330-20-7232,770 lbs147 lbs235,327 lbs
81,3-Butadiene106-99-0232,400 lbs0 lbs232,401 lbs
9Hydrogen cyanide74-90-8213,734 lbs0 lbs213,734 lbs
10Toluene108-88-3183,304 lbs60 lbs184,317 lbs
11n-Butyl alcohol71-36-3137,606 lbs0 lbs137,606 lbs
12Benzene71-43-2107,643 lbs53 lbs108,270 lbs
13Vinyl acetate108-05-470,754 lbs0 lbs70,754 lbs
141,2,4-Trimethylbenzene95-63-647,377 lbs105 lbs47,960 lbs
15Ethylbenzene100-41-440,101 lbs77 lbs40,809 lbs
16Hydrogen sulfide7783-06-437,772 lbs0 lbs37,773 lbs
17Propionaldehyde123-38-631,241 lbs0 lbs31,241 lbs
18Cyclohexane110-82-729,731 lbs0 lbs30,491 lbs
19Butyraldehyde123-72-822,150 lbs0 lbs22,150 lbs
20Naphthalene91-20-316,399 lbs21 lbs17,748 lbs
21Boron trifluoride7637-07-214,388 lbs0 lbs14,388 lbs
22Dicyclopentadiene77-73-614,013 lbs0 lbs14,013 lbs
23Isoprene78-79-513,272 lbs0 lbs13,272 lbs
24Zinc compoundsN9826,334 lbs6,916 lbs13,250 lbs
25Cumene98-82-88,879 lbs10 lbs9,077 lbs
26Dimethylamine124-40-36,912 lbs0 lbs6,912 lbs
27Chlorine7782-50-56,656 lbs0 lbs6,656 lbs
28Acetaldehyde75-07-06,116 lbs0 lbs6,116 lbs
29Ethylene glycol107-21-15,554 lbs0 lbs5,554 lbs
30Biphenyl92-52-44,816 lbs0 lbs5,138 lbs
31Phenol108-95-25,078 lbs0 lbs5,078 lbs
32Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-05,066 lbs0 lbs5,066 lbs
33Isobutyraldehyde78-84-24,080 lbs0 lbs4,080 lbs
34Formaldehyde50-00-03,141 lbs0 lbs3,141 lbs
35Acrylonitrile107-13-12,224 lbs0 lbs2,224 lbs
36Propylene oxide75-56-91,829 lbs0 lbs1,829 lbs
37o-Cresol95-48-71,585 lbs0 lbs1,585 lbs
38Formic acid64-18-61,406 lbs0 lbs1,406 lbs
39Maleic anhydride108-31-61,009 lbs0 lbs1,009 lbs
40Diethanolamine111-42-2600 lbs0 lbs600 lbs
41Hydrogen fluoride7664-39-3229 lbs0 lbs299 lbs
42Nickel7440-02-0120 lbs0 lbs120 lbs
43Diphenylamine122-39-4118 lbs0 lbs118 lbs
44Certain glycol ethersN23092 lbs0 lbs92 lbs
45Manganese7439-96-570 lbs0 lbs70 lbs
46Styrene100-42-556 lbs0 lbs56 lbs
47Polycyclic aromatic compoundsN59047 lbs2 lbs49 lbs
48C.I. Food Red 1581-88-940 lbs0 lbs40 lbs
49Chromium7440-47-340 lbs0 lbs40 lbs
50Anthracene120-12-731 lbs0 lbs31 lbs
51Lead compoundsN4204 lbs27 lbs30 lbs
52Lead And Lead CompoundsN4203 lbs27 lbs30 lbs
53Mercury7439-97-630 lbs0 lbs30 lbs
54Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N09011 lbs0 lbs11 lbs
55Methyl tert-butyl ether1634-04-42 lbs5 lbs10 lbs
56Benzo[g,h,i]perylene191-24-23 lbs0 lbs3 lbs
57Mercury And Mercury CompoundsN4581 lbs0 lbs1 lbs
📋
Top chemicals released near this property (2024 only):
Ethylene, Ammonia, 1,3-Butadiene, n-Hexane, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
View the full list of 42 chemicals reported within 2 miles for 2024.
Chemicals Released (2024 Only)(42 chemicals)
#ChemicalCAS#Air (lbs/yr)Water (lbs/yr)Total (lbs/yr)
1Ethylene74-85-1129,645 lbs0 lbs129,645 lbs
2Ammonia7664-41-789,692 lbs93 lbs89,785 lbs
31,3-Butadiene106-99-033,626 lbs0 lbs33,626 lbs
4n-Hexane110-54-322,511 lbs0 lbs22,615 lbs
5Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7664-93-917,341 lbs0 lbs17,341 lbs
6Methanol67-56-115,808 lbs0 lbs15,808 lbs
7Xylene (mixed isomers)1330-20-712,366 lbs23 lbs12,672 lbs
8Toluene108-88-39,336 lbs13 lbs9,454 lbs
9Benzene71-43-26,125 lbs6 lbs6,162 lbs
10Vinyl acetate108-05-45,850 lbs0 lbs5,850 lbs
111,2,4-Trimethylbenzene95-63-65,159 lbs0 lbs5,368 lbs
12Isoprene78-79-52,371 lbs0 lbs2,371 lbs
13Phenol108-95-22,206 lbs0 lbs2,206 lbs
14Ethylbenzene100-41-41,882 lbs15 lbs1,967 lbs
15Propylene115-07-11,202 lbs0 lbs1,202 lbs
16Boron trifluoride7637-07-21,178 lbs0 lbs1,178 lbs
17Zinc compoundsN982678 lbs481 lbs1,159 lbs
18Hydrogen sulfide7783-06-4923 lbs0 lbs923 lbs
19Dimethylamine124-40-3864 lbs0 lbs864 lbs
20Naphthalene91-20-3748 lbs1 lbs772 lbs
21Cyclohexane110-82-7649 lbs0 lbs667 lbs
22Ethylene glycol107-21-1530 lbs0 lbs530 lbs
23Chlorine7782-50-5512 lbs0 lbs512 lbs
24Cumene98-82-8455 lbs0 lbs461 lbs
25Formaldehyde50-00-0354 lbs0 lbs354 lbs
26Acrylonitrile107-13-1278 lbs0 lbs278 lbs
27Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)7647-01-0265 lbs0 lbs265 lbs
28Propylene oxide75-56-9255 lbs0 lbs255 lbs
29Formic acid64-18-6189 lbs0 lbs189 lbs
30Maleic anhydride108-31-6132 lbs0 lbs132 lbs
31o-Cresol95-48-788 lbs0 lbs88 lbs
32Acetaldehyde75-07-045 lbs0 lbs45 lbs
33Manganese7439-96-530 lbs0 lbs30 lbs
34Chromium7440-47-325 lbs0 lbs25 lbs
35Nickel7440-02-024 lbs0 lbs24 lbs
36Diphenylamine122-39-423 lbs0 lbs23 lbs
37Certain glycol ethersN23011 lbs0 lbs11 lbs
38Diethanolamine111-42-210 lbs0 lbs10 lbs
39Styrene100-42-57 lbs0 lbs7 lbs
40Lead And Lead CompoundsN4201 lbs6 lbs6 lbs
41Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)N0901 lbs0 lbs1 lbs
42Polycyclic aromatic compoundsN5900 lbs0 lbs1 lbs
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