Home > Analysis: 7811 Junior St, Houston, TX 77012 04/25/2025

📊 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

7811 JUNIOR ST HOUSTON 77012

Building Size

1,187 sqft

Total structure area from HCAD building records.

Elevation

31.4 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

N/A

Data not available

Nearest Bayou Stage

N/A

No nearby bayou within monitoring range

Depth-Damage Estimate (HCAD Valuation)

Property not flooded at current water level. No damage to calculate.

Depth-Damage Estimate (Neighborhood Comparison)

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: 21.4 feet
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 Tool

Flood 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)

20.88 million lbs

Extremely High

3199.9x more than typical Houston property
≈ 1.0K 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)

7.74 million lbs

Extremely High

1604.3x 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)

13.14 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)	20,877,124 lbs	7,736,644 lbs	13,140,480 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	3,263,741 lbs	588,127 lbs	2,068,172 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 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), Ammonia, Styrene, Hydrogen cyanide, Propylene

View the full list of 70 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (70 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	13,038,121	13,038,121
2	Ammonia	7664-41-7	1,696,652	37,897	1,734,549
3	Styrene	100-42-5	1,725,883	7,271	1,733,154
4	Hydrogen cyanide	74-90-8	1,408,014	0	1,408,014
5	Propylene	115-07-1	811,054	0	811,054
6	1,3-Butadiene	106-99-0	444,038	1	444,039
7	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	383,635	0	383,635
8	Methyl tert-butyl ether	1634-04-4	267,534	0	267,534
9	Ethylene	74-85-1	183,916	0	183,916
10	Xylene (mixed isomers)	1330-20-7	132,548	0	132,548
11	Ozone	10028-15-6	115,228	0	115,228
12	Methanol	67-56-1	57,574	39,325	96,900
13	Toluene	108-88-3	95,624	86	95,710
14	n-Hexane	110-54-3	89,060	0	89,060
15	Cyclohexane	110-82-7	80,271	0	80,271
16	Benzene	71-43-2	77,103	373	77,476
17	Hydrogen sulfide	7783-06-4	23,987	3,527	27,514
18	N,N-Dimethylformamide	68-12-2	22,161	88	22,249
19	Ethylbenzene	100-41-4	20,666	109	20,775
20	1,2,4-Trimethylbenzene	95-63-6	17,333	0	17,333
21	tert-Butyl alcohol	75-65-0	15,285	0	15,285
22	Ethylene glycol	107-21-1	14,690	0	14,690
23	1,4-Dioxane	123-91-1	10,779	0	10,779
24	Sodium nitrite	7632-00-0	0	9,470	9,470
25	Carbon disulfide	75-15-0	8,908	0	8,908
26	Cyanide compounds	N106	5,934	45	5,979
27	Molybdenum trioxide	1313-27-5	5,795	0	5,795
28	Naphthalene	91-20-3	4,575	72	4,647
29	Phenol	108-95-2	1,635	1,804	3,439
30	Cumene	98-82-8	2,256	0	2,256
31	Polycyclic aromatic compounds	N590	1,636	410	2,046
32	Phthalic anhydride	85-44-9	2,000	0	2,000
33	Vinyl acetate	108-05-4	1,608	0	1,608
34	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	1,460	0	1,460
35	Carbonyl sulfide	463-58-1	1,451	0	1,451
36	Manganese	7439-96-5	1,000	331	1,331
37	Lead	7439-92-1	882	382	1,264
38	Nickel compounds	N495	654	489	1,143
39	Acetaldehyde	75-07-0	1,011	0	1,011
40	Phenanthrene	85-01-8	937	0	937
41	Vanadium compounds	N770	144	509	653
42	1,1,1,2-Tetrachloroethane	630-20-6	434	0	434
43	Cresol (mixed isomers)	1319-77-3	232	0	232
44	Lead And Lead Compounds	N420	203	16	219
45	Nickel And Nickel Compounds	N495	66	123	189
46	Cobalt compounds	N096	131	24	155
47	Chlorine	7782-50-5	120	0	120
48	Dimethylamine	124-40-3	90	0	90
49	Isoprene	78-79-5	60	0	60
50	Lead compounds	N420	42	6	48
51	Anthracene	120-12-7	44	0	44
52	Cobalt And Cobalt Compounds	N096	42	0	42
53	Antimony compounds	N010	38	0	38
54	Mercury compounds	N458	35	1	36
55	Boron trifluoride	7637-07-2	36	0	36
56	Allyl alcohol	107-18-6	34	0	34
57	Methoxone sodium salt	3653-48-3	20	0	20
58	Triethylamine	121-44-8	17	0	17
59	Benzo[g,h,i]perylene	191-24-2	13	0	13
60	Acrolein	107-02-8	13	0	13
61	Mercury And Mercury Compounds	N458	12	0	12
62	Chromium compounds (except for chromite ore mined in the Transvaal Region)	N090	11	0	11
63	Hydroquinone	123-31-9	9	0	9
64	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	8	0	8
65	Diaminotoluene (mixed isomers)	25376-45-8	4	0	4
66	Pyridine	110-86-1	3	0	3
67	Chloroethane	75-00-3	2	0	2
68	p-Cresol	106-44-5	2	0	2
69	Trichloroethylene	79-01-6	1	0	1
70	2,4-Diaminotoluene	95-80-7	1	0	1

Top chemicals released near this property (2024 only):

Nitrate compounds (water dissociable; reportable only when in aqueous solution), 1,4-Dioxane, Ethylene glycol, Ammonia, Styrene

View the full list of 47 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (47 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	N511	0	2,051,661	2,051,661
2	1,4-Dioxane	123-91-1	328	0	396,851
3	Ethylene glycol	107-21-1	5,094	0	177,549
4	Ammonia	7664-41-7	129,969	1,105	131,190
5	Styrene	100-42-5	130,834	291	131,126
6	Hydrogen cyanide	74-90-8	103,731	0	103,731
7	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7664-93-9	50,799	0	50,799
8	Methanol	67-56-1	7,001	14,541	45,819
9	1,3-Butadiene	106-99-0	31,705	0	31,705
10	Methyl tert-butyl ether	1634-04-4	18,336	0	31,624
11	Propylene	115-07-1	28,420	0	28,420
12	Ozone	10028-15-6	25,701	0	25,701
13	Xylene (mixed isomers)	1330-20-7	14,973	0	14,987
14	Ethylene	74-85-1	8,834	0	8,834
15	Cyclohexane	110-82-7	7,486	0	7,486
16	Benzene	71-43-2	6,035	114	6,610
17	Toluene	108-88-3	6,228	8	6,279
18	N,N-Dimethylformamide	68-12-2	1,641	0	1,842
19	Molybdenum trioxide	1313-27-5	1,804	0	1,804
20	n-Hexane	110-54-3	1,713	0	1,713
21	1,2,4-Trimethylbenzene	95-63-6	1,449	0	1,449
22	Ethylbenzene	100-41-4	1,417	5	1,431
23	Carbonyl sulfide	463-58-1	1,041	0	1,041
24	tert-Butyl alcohol	75-65-0	1,021	0	1,021
25	Hydrogen sulfide	7783-06-4	715	0	718
26	Carbon disulfide	75-15-0	484	0	484
27	Sodium nitrite	7632-00-0	0	371	371
28	Naphthalene	91-20-3	243	7	267
29	Cumene	98-82-8	241	0	241
30	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	7647-01-0	221	0	221
31	1,1,1,2-Tetrachloroethane	630-20-6	212	0	212
32	Phenol	108-95-2	164	0	184
33	Lead And Lead Compounds	N420	127	7	136
34	Cobalt And Cobalt Compounds	N096	42	0	42
35	Polycyclic aromatic compounds	N590	2	40	42
36	Lead	7439-92-1	20	22	42
37	Phenanthrene	85-01-8	36	0	36
38	Dimethylamine	124-40-3	23	0	23
39	Anthracene	120-12-7	1	0	14
40	Mercury And Mercury Compounds	N458	8	0	8
41	Benzo[g,h,i]perylene	191-24-2	8	0	8
42	Isoprene	78-79-5	8	0	8
43	Vinyl acetate	108-05-4	5	0	5
44	Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)	N090	2	0	3
45	Boron trifluoride	7637-07-2	1	0	1
46	Acetaldehyde	75-07-0	1	0	1
47	Cresol (mixed isomers)	1319-77-3	1	0	1