Tackling Nutrient Pollution

Nutrient pollution in Casco Bay has been formally recognized by the Legislature as a statewide priority. Casco Bay Estuary Partnership and many partners have been taking action to better understand, convey and reduce the negative impacts of nutrients on Casco Bay. You can read more about these efforts here.

 Casco Bay Watershed

The Casco Bay Watershed is the land area from which water flows into rivers and streams and ultimately, into Casco Bay. Find your place in the watershed! Click here for more information.

Casco Bay Monitoring Program

Fourteen organizations including universities, research institutes, government agencies and non-profits are conducting thirty-one monitoring programs in Casco Bay.  Click here for information on the programs and datafiles to allow you to create your own maps. Results of 2019 and 2018 monitoring efforts in Casco Bay by nine organizations are available here.


  • CBEP Announces 2021 Community Grant Awards Wednesday February 24th, 2021
    Portland, ME – Casco Bay Estuary Partnership (CBEP) has announced its 2021 Casco Bay Community Grants awards. The Community Grants Program supports new partnerships and innovative projects that engage communities with Casco Bay and its watershed. Read story here.
  • Congress Moves to Invest in the Nation’s Estuaries Tuesday February 02nd, 2021
    Casco Bay Estuary Partnership is one of 28 “estuaries of national significance” along every coast that will benefit directly from legislation recently approved by Congress. Story here.
  • 2021 Community Grants RFP Friday December 11th, 2020
    The 2021 Community Grants RFP is available here. The deadline to apply is 9:00 a.m., Monday, January 25, 2021.
  • CBEP 2020 Annual Report Available Friday December 04th, 2020
    Check out all the good work the Partnership accomplished in 2020!            


Check out this new video by South Portland Community TV about the Long Creek Watershed Management restoration project.

Effective Thursday, March 19, 2020, CBEP’s office at the University of Southern Maine in Portland is closed to the public per university-wide closure, in order to minimize the potential for virus exposure. CBEP staff is working at home, and in limited circumstances, in the field, and is available by phone at (207) 780-4820 or via email @ [firstname.lastname@maine.edu].

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