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Current Status of Total Maximum Daily Load (TMDL) Development in Maryland (A- L)

All projects are TMDLs unless otherwise noted.

Data Solicitation for Patapsco River Basin

MDE is requesting readily available data and/or information to support the establishment of Total Maximum Daily Load (TMDL) that would address water quality impairments in the Patapsco River Basin. Specifically, the Maryland Department of the Environment (MDE) is looking for data and information that would be helpful in addressing the sediment, bacteria and temperature impairments in the Patapsco River watershed. Also, Figure 1 in the attached data solicitation notice depicts the Patapsco River watershed. If you are aware of available data and/or information pertaining to sediment, bacteria, polychlorinated biphenyls (PCBs) and temperature impairments within the Patapsco River watershed, please view this correspondence with care.

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Basin Name

DNR 8-digit Basin Number

Impairment

Status

Adkins Pond 02130203

Phosphorus & Sediment

Approved: 
March 27, 2002

Anacostia River 02140205

Bacteria

Approved: 
March 14, 2007

Anacostia River (tidal) 02140205

PCBs

Approved:
Oct. 31, 2007

Anacostia River

 02140205

Sediment

Approved:
July 25, 2012

Anacostia River 02140205

Nutrients

Approved: 
June 5, 2008

Anacostia River (non-tidal) 02140205

PCBs

Approved:
Sept. 30, 2011

Anacostia River 02140205

Trash

Approved:
Sept. 21, 2010

Antietam Creek 02140502

BOD

 Accepted as Information to delist:
Sept. 16, 2001
Antietam Creek 02140502

Non-tidal Bacteria

 Approved:
October 8, 2009
Antietam Creek 02140502 Nutrients (Phosphorus) Approved: 
September 25, 2013
Antietam Creek 02140502

Sediment

Approved:
Dec. 18, 2008

Assawoman Bay 02130102

Bacteria (WQA)

 EPA Concurrence:
May 9, 2005
Assawoman Bay 02130102

Nitrogen and Phosphorus

Approved:
August 7, 2014

Back Creek (C&D Canal) 02130604

Arsenic, Silver and Cadmium (WQA)

EPA Concurrence:
Nov. 11, 2005

Back River (Herring Run) 02130901

Non-tidal Bacteria

Approved:
Dec. 4, 2007

Back River

02130901

Chlordane

Approved:
Dec. 17, 1999

Back River 02130901

Zinc (WQA)

EPA Concurrence:
Dec. 23, 2004

Back River 02130901

Nutrients

Approved:
June 29, 2005

Back River 02130901

PCBs

 Approved:
October 1, 2012
​Back River ​02130901 ​Sediments Approved:
March 5, 2018
Baltimore Harbor 02130903

Nutrients

Approved:
Dec.  17, 2007

Revised Final Point Source Technical Memorandum was approved by EPA on November 5, 2018.

Baltimore Harbor 02130903

Chlordane

 Approved:
March 23, 2001
Baltimore Harbor, Marley Creek and Furnace Creek 02130903 Bacteria

Approved:
March 10, 2011

Baltimore Harbor, Northwest Portion

02130903

Chromium (WQA)

Approved:
June 24, 2014

Baltimore Harbor, Northwest Portion 02130903

Zinc and Lead (WQAs)

 No final determination on impairment:
Jan. 18, 2005
Baltimore Harbor 02130903

PCBs

 Approved:
October 1, 2012
Baltimore Harbor, Middle Branch and Northwest Portions 02130903

Trash/Debris

 Approved:
January 5, 2015

Bear Creek, Baltimore Harbor

02130903

Chromium (WQA)

Approved:
June 24, 2014

Bear Creek, Baltimore Harbor 02130903

PCBs

 Approved:
October 1, 2012
Bear Creek 02130903

Zinc (WQA)

 EPA Concurrence:
January 18, 2005
Big Millpond 02130103

Phosphorus & Sediment

 Approved:
April 4, 2002
Big Piney Reservoir 05020204

Mercury

Approved:
Feb. 18, 2004

Bird River 02130803

Nutrients (WQA)

 EPA Concurrence:
May 9, 2005
Bird River Oligohaline Segment 02130803 PCBs Approved:
October 3, 2016
Bodkin Creek 02130902

Lead, Zinc (WQA)

 Approved:
Feb. 20, 2009
Bodkin Creek 02130902

Copper (WQA)

 EPA Concurrence: 
January 30, 2013
Bohemia River Oligohaline Segment 02130602

PCBs

Approved: 
March 18, 2011

Bohemia River 02130602

Nutrients

 Approved:
Jan. 29, 2001
Breton Bay 02140104

Bacteria

 Approved:
Nov. 21, 2005
Breton Bay 02140104

Nutrients

 Approved:
Dec. 19, 2005
Broadford Lake 05020202

Phosphorus

 Approved:
March 2, 2000
Broadford Lake 05020202 Mercury in Fish Tissue Approved:
Sept. 2, 2004
Bush River

02130701

 PCBs Approved:
August 2, 2016
Bynum Run 02130704 Nutrients (WQA)

Approved:
June 12, 2007

Bynum Run 02130704 Sediment

Approved:
Sept. 30, 2011

C&D Canal Oligohaline Tidal Chesapeake Bay Segment 02130604 PCBs Approved:
December 30, 2014
Cabin John Creek 02140207 Bacteria Approved:
Mar. 14, 2007
Cabin John Creek 02140207 Sediment

Approved:
Sept. 30, 2011

Cabin John Creek 02140207 Nutrients (WQA)

Approved:
Sept. 24, 2009

Casselman River 05020204

Nutrients (WQA)

 EPA Concurrence:
April 12, 2001
Casselman River 05020204

Low pH

Approved:
April 17, 2008

Catoctin Creek 02140305 Nutrients (Phosphorus) Approved:
September 24, 2013
Catoctin Creek 02140305

Sediments

Approved: 
July 31, 2009

Centennial Lake 02131105

Phosphorus & Sediment

 Approved:
April 24, 2002
Cherry Creek (Deep Creek) 05020203

Low pH

Approved: 
Nov. 26, 2003

Chester River, Lower 02130505

Fecal Coliform

Approved: 
June 11, 2008

Chester River, Middle 02130509

Fecal Coliform

Approved: 
June 11, 2008

Chester River, Middle 02130509

Nutrients

Approved:
Nov. 28, 2006

Revised Point Source Technical Memorandum was approved November 5, 2018.

Chester River, Upper 02130510

Nutrients

Approved:
Nov. 28, 2006

Revised Point Source Technical Memorandum was approved November 5, 2018.
​Chester River, Upper ​02130510 ​Sediment ​Public comment period ended December 3, 2018.
Chester River, Upper - Millington Wildlife Management Area Ponds 02130510 Mercury

Approved:
March 18, 2011

Chester River, Upper - Duck Neck Beach 02130510 Fecal Coliform Approved:
March 18, 2011
Chicamicomico River 02130308

Nutrients

 Approved:
February 28, 2001
Chincoteague Bay 02130106

Bacteria (WQA)

EPA Concurrence:
May 9, 2005

Chincoteague Bay 02130106

Nitrogen and Phosphorus

Approved:
August 7, 2014

Clopper Lake 02140208

Phosphorus & Sediment

Approved:
April 4, 2002

Conococheague Creek 02140504

Non-tidal Bacteria

Approved:
May 7, 2009

Conococheague Creek 02140504

BOD

 Approved:
February 2, 2001
Conococheague Creek 02140504

Sediments

 Approved:
Nov. 24, 2008
Conowingo Dam/Susquehanna River 02120204

Nutrients (WQA)

 EPA Concurrence: 
May 18, 2012
Conowingo Dam/Susquehanna River 02120204

Sediments (WQA)

 EPA Concurrence: 
May 18, 2012
Corsica River 02130507

Bacteria

Approved:
Nov. 4, 2005

Corsica River 02130507

Nutrients

 Approved:
May 9, 2000
Corsica River 02130507

PCBs

Approved:
March 22, 2011

Curtis Creek1 02130903

Zinc

 Under Development
Curtis Creek, Baltimore Harbor 02130903

PCBs

 Approved:
October 1, 2012
Deep Creek Lake 05020203

Mercury

Approved:
Feb. 18, 2004

Deep Creek Lake 05020203

Nutrients (Phosphorus) WQA

Approved:
Sept. 9, 2011

Dividing Creek 02130204 Bacteria

Approved: 
April 15, 2009

Double Pipe Creek 02140304

Non-Tidal Bacteria

Approved: 
Dec. 3, 2009

Double Pipe Creek 02140304 Nutrients (Phosphorus) Approved:
April 26, 2013
Double Pipe Creek 02140304

Sediments

Approved: 
Feb. 20, 2009

Duck Neck Beach, Chester River 02130510 Bacteria

Approved:
March 18, 2011

Eastern Bay 02130501

Bacteria

Approved:
Sept. 27, 2005

Edgewater Village Lake1

02130702

Nutrients

 UAA to be conducted using the TMDL analysis
Elk River Oligohaline Tidal Chesapeake Bay Segment  02130601 02130603 02130605 PCBs Approved:
December 30, 2014
Evitts Creek 02141002

WQA of Low pH

Approved:
Dec. 16, 2005

Evitts Creek 02141002

Nutrients (WQA)

Approved:
March 15, 2010

Evitts Creek 02141002

Sediment

Approved:
Jan. 16, 2007

Fairlee Creek 02130611

Nutrients

 Approved:
March 18, 1999
Furnace Creek 02130903 Bacteria

Approved:
March 10, 2011

Georges Creek 02141004

Bacteria

Approved:
Sept. 20, 2007

Revised Final Submitted:
August 20, 2009

Georges Creek 02141004

Low pH

Approved:
April 17, 2008

Revised Final Approved:
February 10, 2011

Georges Creek 02141004

Sediment

Approved:
Dec. 27, 2006

Georges Creek 02141004

BOD

 Accepted as Information to delist:
Feb. 26, 2002
Greenbrier Lake 02140502

Nutrients (WQA)

 Approved:
Sept. 27, 2005
Gunpowder River Oligohaline Segment 02130801 PCBs Approved:
October 3, 2016
Gwynns Falls 02130905

Non-tidal Bacteria

Approved:
Dec. 4, 2007

Gwynns Falls 02130905

Nutrients (WQA)

 Approved:
March 15, 2010
Gwynns Falls 02130905

Sediments

Approved:
March 10, 2010

Revised Final documents were available for public comment through October 13, 2015.

Honga River 02130401

Bacteria

Approved:
Jan. 11, 2006

Isle of Wight (Herring and Turville Creeks) 02130103

Bacteria

Approved:
July 7, 2006

Isle of Wight Bay 02130103

Nitrogen and Phosphorus

Approved:
August 7, 2014

Johnson Pond 02130304

Phosphorus & Sediments

 Approved:
Feb. 13, 2001
Jones Falls 02130904

Non-tidal Bacteria

Approved:
Feb. 21, 2008

Jones Falls 02130904

Zinc (WQA)

 EPA Concurrence:
Feb. 20, 2003
Jones Falls 02130904

Copper & Lead (WQAs)

EPA Concurrence:
Dec. 2, 2004

Jones Falls 02130904

Nutrients (WQA)

Approved:
March 15, 2010

Jones Falls 02130904

Sediments

 Approved: 
Sept. 29, 2011
Kent Island Bay 02130511

Bacteria (WQA)

 EPA Concurrence:
May 9, 2005
Kent Narrows/ Prospect Bay (Wells Cove) 02130504

Bacteria

Approved:
August 2, 2006

Lake Bernard Frank 02140206

Nutrients (WQA)

 EPA Concurrence:
January 22, 2003
Lake Habeeb 02141002

Nutrients (WQA)

 EPA Concurrence:
November 3, 2016
Lake Lariat 02131101

Mercury

Approved:
Jan. 27, 2004

Lake Linganore 02140302

Phosphorus & Sediment

Approved:
May 13, 2003

Lake Roland 02130904

Chlordane

 Approved:
March 23, 2001
Lake Roland 02130904 PCBs

Approved:
June 30, 2014

Langford Creek (tidal portion) 02130506

Nutrients (WQA)

 EPA Concurrence:
January 22, 2003
Langford Creek 02130506

Bacteria (WQA)

 EPA Concurrence:
May 9, 2005
Liberty Reservoir 02130907

Phosphorus and Sediments

Approved:
May 7, 2014

Revised Point Source 
Technical Memorandum 
 was accepted on November 13, 2017.

Liberty Reservoir 02130907

Mercury (WQA)

EPA Concurrence:
May 6, 2014

Liberty Reservoir 02130907

Chromium & Lead (WQAs)

EPA Concurrence:
Nov. 10, 2003

Liberty Reservoir 02130907

Non-tidal Bacteria

Approved:
December 3, 2009

Revised TMDL was accepted on November 13, 2017.

Little Choptank River 02130402

Bacteria

 Approved:
May 25, 2005
Little Gunpowder Falls

02130804

Nutrients (WQA)

 EPA Concurrence:
Aug. 26, 2009
Little Gunpowder Falls 02130804

Metals (WQA)

 EPA Concurrence:
Feb. 20, 2003
Little Patuxent River 02131105

Cadmium (WQA)

 Approved:
July 13, 2009
Little Patuxent River 02131105

Nutrients (WQA)

Approved:
March 15, 2010

Little Patuxent River 02131105 Sediments

Approved:
Sept. 30, 2011

Little Seneca Lake 02140208

Nutrients (WQA)

 Approved:
Aug. 10, 2006
Little Youghiogheny River 05020202

BOD

 Approved:
Jan. 29, 2001
Little Youghiogheny River 05020202

Non-tidal Sediment

Approved:
Feb. 7, 2007

Little Youghiogheny River 05020202

Non-tidal Bacteria

Approved:
December 3, 2009

Loch Raven Reservoir 02130805 Non-tidal Bacteria

Approved: 
December 3, 2009

Loch Raven Reservoir 02130805

Mercury

Approved:
Aug. 16, 2004

Loch Raven Reservoir 02130805

Nutrients and Sediments

Approved:
March 27, 2007

Loch Raven Reservoir 02130805

Heavy Metals (WQA)

EPA Concurrence:
Nov. 10, 2003

Lower Choptank River 
(6 Restricted Shellfish Harvesting Areas)		 02130403

Bacteria

 Approved:
June 7, 2005
Lower Choptank River
(Mainstem)		 02130403

Bacteria

Approved:
Nov. 15, 2006

Revised document approved by EPA on March 27, 2018.

Lower Choptank River (5 Restricted Shellfish Harvesting Areas) 02130403

Bacteria

Approved:
Sept. 11, 2006

Lower Gunpowder Falls 02130802

Heavy Metals (WQA)

EPA Concurrence:
Nov. 10, 2003

Lower Gunpowder Falls 02130802

Nutrients (WQA)

EPA Concurrence:
May 18, 2012

Lower Gunpowder Falls 02130802

Sediment

Approved:
May 4, 2017

Lower Monocacy River 02140302

Non-Tidal Bacteria

Approved: 
Dec. 3, 2009

Lower Monocacy River 02140302

Nutrients

 Approved:
May 22, 2013
Lower Monocacy River 02140302

Sediments

 Approved:
Mar. 17, 2009
Lower North Branch of the Patapsco River 02130906

Non-Tidal Bacteria

 Approved:
Dec. 3, 2009
Lower North Branch of the Patapsco River 02130906

Phosphorus

 Approved:
Sept. 23, 2009
Lower North Branch of the Patapsco River 02130906

Sediments

Approved:
Sept. 30, 2011

Lower North Branch of the Patapsco River 02130906

Metals (WQA)

EPA Concurrence:
Jan. 18, 2005

Lower North Branch of the Potomac River

02141001

Sediments

EPA Concurrence:
May 18, 2012

Lower North Branch of the Potomac River 02141001

Nutrients (WQA)

EPA Concurrence:
May 18, 2012 

Lower North Branch of the Potomac River 02141001

pH (WQA)

 Approved:
Sept. 27, 2005
Lower North Branch of the Potomac River 02141001

Cadmium (WQA)

 Approved:
Aug. 16, 2006
Lower Patuxent River 02131101

Bacteria

 Approved:
May 25, 2005
Lower Patuxent River (Add'l restricted shellfish harvesting areas)  02131101

Bacteria

Approved:
Sept. 27, 2005

Lower Patuxent River Mainstem 02131101

Bacteria (WQA)

Approved:
May 15, 2007

Lower Patuxent River (Mill Creek)
02131101


Bacteria

 Approved:
August 20, 2009
Lower Patuxent River 02131101

Chlorpyrifos (Pesticide)

EPA Concurrence:
July 3, 2007

​Lower Patuxent River ​02131101 ​Sediment

Approved:
July 2, 2018

Lower Pocomoke River 02130202

Fecal Coliform

Approved:
April 15, 2009

Lower Potomac River (Tidal) 02140101

Bacteria

 Approved:
May 25, 2005
Lower Susquehanna River 02120201

Nutrients (WQA)

EPA Concurrence:
Jan. 11, 2006

Lower Susquehanna River 02120201

Cadmium (WQA)

 Approved:
Aug. 20, 2009
Lower Wicomico River 02130301

Bacteria

Approved: 
June 18, 2008
Addendum to TMDL approved by EPA: March 13, 2018

Lower Wicomico River 02130301

Nutrients & BOD

 Approved:
June 22, 2001

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WQA = Water Quality Analysis

1Action may take two forms: submittal of a Total Maximum Daily Load (TMDL) or submittal of a Water Quality Analysis (WQA).  TMDLs are developed when a given substance or stressor is exceeding water quality standards.  WQAs are developed when supplemental data indicate the waterbody is meeting water quality standards for that substance.  This list is subject to change. 

Contact Info

Please direct questions or comments concerning Maryland's TMDL Program to Melissa Chatham at (410) 537-3937.

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