Diana Madson

Founder & Executive Director


Growing up in Northern California, Diana Madson spent much of her life in the great mountains of the Sierra Nevada. Devoting her education and career to protecting these pristine landscapes and vibrant communities, Diana is driven to catalyze change where it counts.

The Mountain Pact developed from Diana’s graduate research at the Yale School of Forestry & Environmental Studies, where she explored how climate change has transformed mountain resort communities. Over the course of her research, including interviews with local governments, businesses and nonprofit groups, Diana identified essential gaps in knowledge and obstacles preventing action. Diana has built the Mountain Pact specifically to overcome these obstacles. 

In addition to her work with the Mountain Pact, Diana is Sierra Business Council's Government Affairs Director as well as the Director of the Sierra Climate Adaptation & Mitigation Partnership (Sierra CAMP) where she advocates for investments in the Sierra Nevada region to support triple bottom line initiatives such as climate action, mitigation and adaptation efforts, sustainable communities strategies, conservation, community planning, and economic development. 

Prior to the Mountain Pact, Diana was the Founder and Director of Yale University’s Team Climate, a climate change media campaign that partnered with 16 Olympians at Sochi to reach over 315 million people with the message that climate change is compromising winter sports. Diana has also worked for the Climate Registry where she consulted over 400 corporate and government clients on greenhouse gas accounting.

Diana received her Master of Environmental Management from the Yale School of Forestry & Environmental Studies and graduated with Highest Distinction from the University of California, Berkeley with a B.S. in Society & Environment and a B.A. in Rhetoric.

Maddie Rehn

Senior Project Director


Maddie was born and raised in the Colorado Rockies. Her backyard was the White River National Forest. With twelve ski resorts, eight wilderness areas, and endless miles of trails, it was easy for Maddie to gain a deep appreciation for alpine environments and mountain communities. Seeing firsthand the changes of climate at high altitude, she has been dedicated to the informed stewardship of the earth and improved management approaches vital to cultivating sustainable mountain communities.

Maddie joined the Mountain Pact in 2015 and has been providing policy research and mobilizing support to Mountain Pact delegations since. She received a Master in Environmental Management degree from Western State Colorado University. 

Not only is she motivated by her love of the outdoors, but also by the community of people who live amongst the mountains. 


Project Director

Jocelyn grew up exploring the mountains of Southwest Colorado where her love and appreciation for open spaces and public lands began to develop at a young age. She has always been deeply drawn to the unique communities and ample opportunities for recreation that Colorado mountain towns have to offer. It was while Jocelyn was working as a field instructor for the Colorado Outward Bound School (COBS) that her passion for protecting the environment
was cemented. Seeing the impact that wild places have on the minds of other young people inspired her to seek ways to protect the alpine ecosystems essential to outdoor recreation and the economies of the mountain towns that she calls home.

Her work for COBS inspired Jocelyn to return to college to study Environmental Biology and Ecology and Environmental Studies at Western State Colorado University where she earned her Bachelor’s degree and became involved with the Mountain Pact. Since 2016 she has been
providing research, writing, and outreach support.

Jocelyn is now pursuing an M.A. in Environmental Policy at Western Washington University where she is further developing her skills and passion to bring lesser heard voices into the federal environmental and public lands policy arena.