MS4 Portal

Welcome to the newly created Ms4 Portal!

A location for all of your MS4 permit and Bay TMDL needs.

MS4s in the Bay Watershed Graphic credit: CBPO

MS4s in the Bay Watershed
Graphic credit: CBPO

The MS4 portal was created as a way to share newly developed tools and resources with MS4s in the Bay watershed (and their consultants) working to meet MS4 permit requirements and the objectives of the Bay TMDL.

We are excited to have you here! We have a lot to offer you in terms of technical tools and resources that will help you meet the MS4 permit and Bay TMDL requirements.

Not a part of our MS4 club and would like to be? Head on over to the “Join” section of our website and sign on up…it’s free!

ESC Fact Sheet Released!

New fact sheet released on enhanced erosion and sediment control practices in the Bay watershed!
Learn more…

Identification of High Risk Lawns for Water Quality: Guidance for Chesapeake Bay Communities

New UNM guidance document for local governments on how to identify high risk lawns.
Learn more…

Green Infrastructure Design Competition – Blair County, PA

A Green Infrastructure Design Competition in Blair County, PA!
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Call for USWG Nominations!

The Urban Stormwater Workgroup invites nominations for outstanding candidates!
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Shoreline Management Practices Approved for Credit!

A new credit for using shoreline management techniques to prevent or reduce tidal sediments getting into the Bay!
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Pennsylvania Urban BMP Funding Opportunity

Pennsylvania is now offering funding for the construction of urban stormwater BMPs located in the Chesapeake Bay watershed! Applications are due October 9.
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Urban BMP Fact Sheets

Urban BMP Fact Sheets simplify the Expert Panel reports to “Just the Facts”
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Revised VA Chesapeake Bay TMDL Action Plan Guidance Document Released!

Virginia releases the revised version of their guidance document.
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New Nutrient Accounting Guidance Documents Released!

Maryland and Virginia finalized and released their nutrient accounting guidance read more…
Learn more…