Working to protect the Yosemite region


CSERC is the lead local organization working to protect the greater Yosemite ecosystem. The Center’s staff attends Park hearings, submits detailed comments on projects, and does fieldwork and research to monitor wildlife and wild places in the Park.

In 2014 more than 4,000,000 people visited Yosemite Park because of the spectacular scenery, the diverse wildlife, and the many impressive waterfalls and rivers. But despite the obvious beauty of this world-renowned destination, Yosemite faces many threats and challenges.

Key areas where CSERC makes a difference for Yosemite


Protection of wildlife

CSERC has provided hundreds of hours of staff time and expensive research equipment to cooperate with Yosemite Park biologists in research studies looking for rare wildlife species in Yosemite. CSERC’s wildlife photo-stations outside the Park also show where elusive wildlife still lingers in less protected habitat.

Challenging Yosemite park projects & policies at hearings

CSERC staff is often the only informed voice for the environment at public meetings held by Yosemite Park officials to get comments on proposed projects and policies. By doing their homework, CSERC representatives help to influence Park decisions.

You can help us attend these meetings

Read about CSERC's success influencing the future of the Mariposa Grove of Giant Sequoias.


Watchdog monitoring in Yosemite park

Watchdog monitoring is essential for all of our public lands, and Yosemite is no exception. CSERC visits Park destinations during both the quiet season and the busy summer period in order to identify areas with congestion, disturbance of wildlife, or other threats to nature in the Park.

In the past planning processes for the Merced River and Tuolumne River, Park officials faced the challenge of managing “use” in Yosemite so that tourism and commercialism do not cause significant harm to outstanding values. Despite strong criticisms from CSERC and other groups, the Park elected to mostly continue the status quo for management in these Wild and Scenic river corridors without putting forward changes that would better protect resources, relieve crowding and improve visitor experiences in the Park.

Yosemite Mountains

Click for more information about Yosemite's plans for the Tuolumne and Merced River corridors.
If you want to help us protect the Yosemite Park then visit our How to Help page.