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- Assessment Summary
- Causes of Impairment
- Probable Sources Contributing to Impairment
- TMDL Alternatives by Cause of Impairment
- Cumulative TMDLs by Pollutant
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Louisiana, Lower Mississippi-Baton Rouge Watershed
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Assessment Summary for Reporting Year 2006
Louisiana, Lower Mississippi-Baton Rouge Watershed
Description of this table
Click here to list Threatened and Impaired Waters Only
Click here to list Threatened and Impaired Waters Only
| NOTE: Click on the underlined "Waterbody Name" to view a Waterbody report. | ||||||||
| Waterbody Name | Waterbody ID | Location | Map | Waterbody Type | Size | Units | Status | State TMDL Development Status |
|---|---|---|---|---|---|---|---|---|
| Devil'S Swamp Lake And Bayou Baton Rouge | LA070203_00 | Devil'S Swamp Lake And Bayou Baton Rouge | Waterbody Map | Freshwater Lake | 24.0 | Acres | Impaired | TMDL needed |
| Mississippi River - Monte Sano Bayou To Head Of Passes | LA070301_00 | Mississippi River-From Monte Sano Bayou To Head Of Passes | Waterbody Map | River | 259.0 | Miles | Good | |
| Mississippi River - Old River Control Struture To Monte Sano | LA070201_00 | Mississippi River-From Old River Control Structure To Monte Sano Bayou | Waterbody Map | River | 85.0 | Miles | Good | |
| Monte Sano Bayou - Hwy. 61 To The Mississippi River | LA070504_00 | Monte Sano Bayou-From U.S. Hwy. 61 To The Mississippi River Confluence. See Lac 33:Ix.1123. | Waterbody Map | River | 6.0 | Miles | Impaired | TMDL needed |
| Old River Lake Or Raccourci Lake | LA070202_00 | Old River Lake Or Raccourci Lake | Waterbody Map | Freshwater Lake | 4,160.0 | Acres | Impaired | TMDL needed |
| Tunica Bayou - Headwaters To Mississippi River | LA070505_00 | Tunica Bayou-Headwaters To Mississippi River | Waterbody Map | River | 7.0 | Miles | Impaired | TMDL needed |
Causes of Impairment for Reporting Year 2006
Louisiana, Lower Mississippi-Baton Rouge
Description of this table| NOTE: Click on the underlined "Cause of Impairment" value to see a listing of those waters with that cause of impairment. | |||||||||||||||
| Cause of Impairment | Size of Assessed Waters with Listed Causes of Impairment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
||||||||||||||
| Non-Native Aquatic Plants | 4,160.0 | ||||||||||||||
| Polychlorinated Biphenyls (PCBs) | 24.0 | ||||||||||||||
| Hexachlorobenzene | 24.0 | ||||||||||||||
| Oil and Grease | 24.0 | ||||||||||||||
| Turbidity | 24.0 | ||||||||||||||
| Fecal Coliform | 7.0 | 24.0 | |||||||||||||
| Lead | 24.0 | ||||||||||||||
| Phosphorus, Total | 24.0 | ||||||||||||||
| Hexachlorobutadiene | 24.0 | ||||||||||||||
| Nitrate/Nitrite (Nitrite + Nitrate as N) | 24.0 | ||||||||||||||
| Chlorine | 6.0 | ||||||||||||||
| Dissolved Oxygen | 6.0 | 24.0 | |||||||||||||
| pH, High | 4,160.0 | ||||||||||||||
Probable Sources Contributing to Impairments for Reporting Year 2006
Louisiana, Lower Mississippi-Baton Rouge Watershed
Description of this table| Probable Source | Size of Assessed Waters with Probable Sources of Impairments | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
||||||||||||||
| Contaminated Sediments | 24.0 | ||||||||||||||
| Discharges From Municipal Separate Storm Sewer Systems (Ms4) | 6.0 | 24.0 | |||||||||||||
| Industrial Point Source Discharge | 24.0 | ||||||||||||||
| Industrial/Commercial Site Stormwater Discharge (Permittted) | 24.0 | ||||||||||||||
| Introduction Of Non-Native Organisms (Accidental Or Intentional) | 4,160.0 | ||||||||||||||
| Non-Irrigated Crop Production | 4,160.0 | ||||||||||||||
| On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems) | 7.0 | ||||||||||||||
| Sanitary Sewer Overflows (Collection System Failures) | 24.0 | ||||||||||||||
| Source Unknown | 6.0 | 24.0 | |||||||||||||
| Upstream Source | 24.0 | ||||||||||||||
TMDL Alternatives by Cause of Impairment for Reporting Year 2006
Louisiana, Lower Mississippi-Baton Rouge Watershed
Description of this table
| NOTE: Click on the underlined "Number of TMDL Alternatives by Cause of Impairment " value to see a listing of those Causes of Impairment. | ||||||||||||||
| Cause of Impairment | Number of TMDL Alternatives |
Lakes, Reservoirs, and Ponds (Acres) |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hexachlorobenzene |  1 |
24 | ||||||||||||
| Hexachlorobutadiene | 1 |
24 | ||||||||||||
| Non-Native Aquatic Plants | 1 |
4,160 | ||||||||||||
| Oil and Grease | 1 |
24 | ||||||||||||
| Polychlorinated Biphenyls (PCBs) | 1 |
24 | ||||||||||||
Total: 5 TMDL Alternatives
Cumulative TMDLs by Pollutant
No TMDL data have been reported to EPA for this watershed.
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