Evolving Shorelines

Creating a shared vision for preservation and recreation at Bothin Marsh.

OCTOBER 14, 2020

Community Conversation

Discuss draft concepts for the enhancement of Bothin Marsh Preserve’s tidal marsh, and elevating the Mill Valley-Sausalito Pathway. Share comments on design options for adapting to sea level rise. Zoom meeting, Thursday, October 15, 5 to 6 pm. RSVP required: https://bit.ly/3d3uFHQ

JULY 9, 2020

Shared Vision Complete

This shared vision document for Bothin Marsh reflects community feedback–hundreds of people turned out to kayak, hike, play, and learn about the impact of climate change and sea level rise on this preserve. It is the collaborative effort of a broad coalition, working to envision the future of Bothin Marsh.

The Bothin Marsh Planning Memo identifies possible strategies for meeting the goals of the shared vision. This memo was drafted by consultants WRT and ESA, in collaboration with the Golden Gate National Parks Conservancy, via One Tam. 

To celebrate these milestones with the community, the Evolving Shorelines team hosted a Zoom virtual happy hour on Thursday, July 16, at 5:00 p.m. 

NOVEMBER 6, 2019

Board of Supervisors

The Board of Supervisors approved moving forward with development of conceptual designs for the Bothin Marsh Sea Level Rise Adaptation Project, based on shared community vision and research to date. The Golden Gate National Parks Conservancy will collaborate with the Marin County Open Space District on developing and completing conceptual designs, as well as continuing community outreach. The California Coastal Commission is in the process of recommending a grant which may help support this work.

SEPTEMBER 24, 2019


Through the end of 2019, visitors can combine a reading adventure with a fun family walk along Bothin Marsh. Visitors of all ages will enjoy a series of reading panels featuring A Stone Sat Still, a new book by award-winning author and illustrator Brendan Wenzel. One Tam partners - Marin County Parks and the Golden Gate National Parks Conservancy - collaborated on the StoryWalk with local libraries and Chronicle Books. A series of events are taking place to celebrate the StoryWalk installation:


Bothin Marsh is a well-loved stretch of shoreline that offers much in the way of recreation and wildlife, with unique plants and animals surrounded by urban development. With current sea level rise projections, the preserve will lose a significant amount of vital wetland habitat by 2030. The Mill Valley-Sausalito Multi-Use Pathway (Bay Trail) will also be greatly affected.

To better understand what is at stake, Marin County Parks and One Tam partners (National Park Service, California State Parks, Golden Gate National Parks Conservancy, and Marin Municipal Water District) worked with local scientists to assess existing conditions, potential future impacts from climate change and sea level rise, and potential adaptation challenges. This information was shared with the community during a series of Evolving Shorelines events.

Evolving Shoreline events were held in 2018 to share knowledge and engage the community in developing a shared vision for protecting this open space. The events offered hands-on experiential activities, like kayaking during King Tides. Attendees at the events also learned about nature-based solutions to address flooding, and collaborative adaptation strategies that would have multiple benefits to the ecosystem and the community. Feedback from the events is being used to develop a community vision that will inform future restoration design options at the preserve.