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Chesapeake Bay TMDL

Public Notice 1 of 2: NEW Draft South River Sediment TMDL Implementation Plan Available for Public Comment through February 25, 2023. (scroll down for Baltimore Harbor Public Notice)

The Anne Arundel County DPW Bureau of Watershed Protection & Restoration recently released the Draft Non-Tidal South River Sediment TMDL Implementation Plan to outline strategies for providing treatment to reduce current sediment loads from the MS4 stormwater sector. Anne Arundel County expects to meet its sediment SW-WLA for the Non Tidal Baltimore Harbor watershed by 2035. 

Public comments relating to the plan will be accepted through Saturday, February 25th, 2023 at 4:30 PM EST. Comments may be submitted to DPW's Customer Relations Office via email at [email protected] with the Subject Line, 'Public Comment - Non-Tidal South River Sediment TMDL Plan', or by mail to 2662 Riva Road, Attn: BWPR Planning Administrator MS 7409, Annapolis, MD 21401. All comments must be submitted in writing and should include the name, address, and telephone number of the person submitting the comments. 

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Public Notice 2 of 2: NEW Draft Baltimore Harbor Sediment TMDL Implementation Plan Available for Public Comment through February 18, 2023. 

The Anne Arundel County DPW Bureau of Watershed Protection & Restoration recently released the Draft Non-Tidal Baltimore Harbor Sediment TMDL Implementation Plan to outline strategies for providing treatment to reduce current sediment loads from the MS4 stormwater sector. Anne Arundel County expects to meet its sediment SW-WLA for the Non Tidal Baltimore Harbor watershed by 2035. 

Public comments relating to the plan will be accepted through Saturday, February 18th, 2023 at 4:30 PM EST. Comments may be submitted to DPW's Customer Relations Office via email at [email protected] with the Subject Line, 'Public Comment - Non-Tidal Baltimore Harbor Sediment TMDL Plan', or by mail to 2662 Riva Road, Attn: BWPR Planning Administrator MS 7409, Annapolis, MD 21401. All comments must be submitted in writing and should include the name, address, and telephone number of the person submitting the comments. 

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What is a TMDL?

By definition, a Total Maximum Daily Load (TMDL) is an estimate of the maximum amount of an impairing substance or stressor (pollutant) that a waterbody can assimilate without violating water quality standards. The total load includes pollutants from pipes, called point sources, and stormwater runoff and groundwater flow called non-point sources. A "margin of safety" is also included in the total load to account for the uncertainties. Additional information can be found a www.mde.state.md.us

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Why should Anne Arundel County be Concerned About TMDLs?

Based on the federal government’s Clean Water Act, all states are required to consider the development of TMDLs for waterbodies that do not meet water quality standards for various pollutants. All of the twelve major waterbodies in Anne Arundel County are impaired by two or more substances (e.g., nutrients, sediments, fecal coliform bacteria, toxics, biological, or metals). The Watershed Assessment and Planning program is continuously monitoring the state of TMDL development and water quality analyses to justify the delisting of waterbodies from the MDE 303(d) impairment list.

Anne Arundel County - Phase II WIP (Watershed Implementation Plan)

Anne Arundel County Category 5 303(d) Waters and TMDLs

 

Draft TMDL Restoration Plans

Non Tidal West River Watershed Sediment TMDL Restoration Plan - Final Draft

Non Tidal Baltimore Harbor Watershed Sediment TMDL Restoration Plan - Final Draft

Non Tidal South River Watershed Sediment TMDL Restoration Plan - Final Draft


Approved TMDL Restoration Plans

Non Tidal Patuxent River Lower and Middle Watersheds Sediment TMDL Restoration Plan

Total Maximum Daily Load Restoration Plan for Bacteria - Final Plan

Baltimore Harbor Watershed Nutrient TMDL Restoration Plan - Final Plan

Baltimore Harbor and Curtis Creek/Bay Polychlorinated Biphenyls (PCB) TMDL Restoration Plan

Little Patuxent River Sediment TMDL Restoration Plan - Final Plan

Patapsco River Lower North Branch Sediment TMDL Restoration Plan - Final Plan

Upper Patuxent River Sediment TMDL Restoration Plan - Final Plan


Progress Reports

Below are Programmatic and Implementation progress reports as required by the Maryland Department of the Environment. Programmatic Milestones are commitments to non-project improvements such as organizational, process, and capacity building changes that position Anne Arundel County to implement it's WIP. Implementation Milestones are commitments to on-the-ground activities that result in nutrient and sediment load reductions.

Anne Arundel County Programmatic Two-Year Milestones - January 2018 – December 2019

Programmatic Milestones - Progress Reports

Programmatic Milestones FINAL Report - Reporting Period - January 1, 2016 – December 31, 2017 - (Submitted to MDE on 1/26/18)

Programmatic Two-Year Milestones INTERIM Progress Report - Reporting Period - January 1, 2016 – December 31, 2016 - (Submitted to MDE on 1/27/17)

Programmatic Two-Year Milestones FINAL Progress Report - Reporting Period - January 1, 2014 - December 31, 2015 - (Submitted to MDE on 1/29/16)

Programmatic Milestones FINAL Report - Reporting Period - January 1, 2012 to December 31, 2013 - (Submitted to MDE on 1/31/14)

Implementation Milestones - Progress Reports

Implementation Two-Year Milestones FINAL Progress Report - Reporting Period - July 1, 2015 – June 30, 2017 - (Submitted to MDE on 1/26/18)

Implementation Two-Year Milestones INTERIM Progress Report - Progress Achieved - July 1, 2015 – June 30, 2016 - (Submitted to MDE on 1/27/17)

Implementation Two-Year Milestones FINAL Progress Report - Reporting Period - January 1, 2013 - June 30, 2015 - (Submitted to MDE on 1/29/16)

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