Bass Harbor Marsh

sunset reflected over green grass and stream
The sun sets on Bass Harbor Marsh in Acadia National Park. Photo by Ashley L. Conti/Friends of Acadia.

Bass Harbor Marsh is located on the western side of Mount Desert Island and is the largest area of salt marsh in Acadia. A small estuary is formed where freshwater streams meet the sea, with brackish (part saltwater, part freshwater) conditions influenced by the twice-daily tides. Bass Harbor Marsh has been severely impacted by invasive plant species that have displaced the native species that support a greater diversity of wildlife.

Together with our partners-in-science, Acadia National Park scientists and volunteers are actively working to remove the problematic plants and restore the health of Bass Harbor Marsh. This research-based effort is also connected to work at the summit of Cadillac Mountain and at the Great Meadow Wetland.

a researcher stands at a table surrounded by green plants, rocks in the background
Science at the Summit

Learn about the ways climate change is challenging researchers to rethink how they manage Acadia's fragile mountain summits.

blue sky reflects in standing water below green hills
Great Meadow Wetland

Learn about this expansive wetland ecosystem and the steps scientists are taking to restore its health in the face of change.


More About Bass Harbor Marsh

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    Last updated: April 5, 2023

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    PO Box 177
    Bar Harbor, ME 04609


    207 288-3338

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