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 performs fieldwork and research to monitor wildlife and wild places in the Park.

In 2016 more than 5 million people visited Yosemite Park because of the spectacular scenery, the diverse wildlife, and the many impressive waterfalls and rivers. But despite the unique and irreplaceable beauty of this world-renowned destination, Yosemite still faces many environmental threats.

How CSERC works to protect Yosemite

Protection of wildlife

CSERC has provided hundreds of hours of staff time and the use of expensive research equipment, collaborating with Yosemite Park biologists to survey for rare wildlife species within the Park. CSERC’s wildlife photo-stations outside the Park provide additional knowledge about elusive wildlife, lingering in less protected habitat.

Challenging Yosemite Park projects & policies at hearings

CSERC staff tries to advocate for the most thoroughly-researched environmental position at public meetings, which are held by Yosemite Park officials to collect comments on proposed projects and policies. By staying well-informed and performing our own research, representatives from CSERC help to influence Park decisions.

You can help nature in Yosemite by attending these meetings and voicing your support for environmentally-friendly project alternatives!

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


Watchdog monitoring in Yosemite park

Watchdog monitoring is essential to protect 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, and other threats to nature in the Park.

In 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 would not cause significant harm to the outstanding natural setting. Despite strong criticism from CSERC and other groups, the Park elected to continue the management status quo in these Wild and Scenic river corridors, instead of 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, visit our How to Help page.