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County Implementation Strategy

The Coordinated Implementation Strategy (“the Strategy”) shows how the County will meet the MS4 Permit required watershed restoration goals and water quality standards. Countywide watershed restoration priorities were developed based on the findings for the 8 individual watersheds. The Maryland Department of Environment (MDE) approved the Strategy in 2012.


Image of a DEP staff member teaching two residents about stormwater management.
DEP attends the County Fair each year to educate the public on the efforts to protect streams and reduce stormwater pollution.

Read the County Coordinated Implementation Strategy Official Document (PDF, 6.11MB)


The Strategy identified the following general priorities:

  • Implement watershed restoration projects

  • Focus on Environmental Site Design projects in urban areas on public and private properties

  • Implement key initiatives in the Public Education and Outreach Workplan

  • Implement only the most cost efficient individual watershed strategies.


Click the "On this Page" tabs to the right to learn more about each part of the Strategy.  


Public Outreach Workplan

The MS4 Permit requires the County to implement a public outreach and education program to encourage County residents to take action to reduce stormwater pollution.  The Permit specifically requires a Public Outreach and Education Workplan.

The Workplan was completed as part of the Strategy. The County’s outreach program focuses on eight practices prioritized by the Strategy. View the implementation projects listed under each strategy. 

Image of children learning about their watershed.
The Public Outreach Workplan tries to engage County residents of all ages and nationalities.

Read the Public Outreach and Education Workplan (PDF, 647KB)


Watershed Implementation Plans

The Countywide Strategy contains Watershed Implementation Plans for the County’s eight major watersheds.

The Watershed Implementation Plans:

  • Identified areas for stormwater management control and watershed restoration projects;

  • Estimated how much stormwater control and pollutant reductions would be achieved by the projects;

  • Determined the restoration potential of each watershed and evaluated its ability to meet the applicable Total Maximum Daily Loads (TMDLs); and

  • Provided a schedule and cost estimate for meeting the Waste Load Allocations (WLAs) set by the TMDLs.


Seven Watershed Plans Have Been Developed:


Anacostia Watershed (PDF, 2.72MB)

Cabin John Creek Watershed (PDF, 2.51MB)

Lower Monocacy Watershed (PDF, 1.62MB)

Muddy Branch and Watts Branch Subwatershed (PDF, 1.55MB)

Patuxent Watershed (PDF, 4.68MB)

Rock Creek Watershed (PDF, 2.32MB)

Great Seneca Subwatershed (Including Clopper Lake) (PDF, 2.45MB)


County Watershed Map

Image of the Montgomery County watershed map.
Click the map to get a close up view (PDF, 1.24MB).  
To see what watershed, you are in, visit the Find Your Watershed page. 



Watershed Pre-Assessments

The Strategy also contains pre-assessments for three watersheds that had not been studied previously.  

A pre-assessment is a preliminary review of the existing conditions in the watershed and other information about the watershed. The pre-assessments will be used by the County to develop watershed assessments and associated implementation plans.

For more information on the framework the County will use to develop future watershed implementation plans, including pre-assessments, watershed assessments, and implementation plans, please see the Recommended Framework for Completing Future Watershed Implementation Plans. (PDF, 391KB)

Image of a frog from Little Seneca Creek.
Frog found in the Seneca Creek Watershed


Completed Watershed Pre-Assessments



The County is developing Watershed Implementation Plans for these watersheds during 2013-2014.