Sierra Watershed Education Partnerships (SWEP) is a small, community-oriented non-profit organization based within the Tahoe Truckee Unified School District. We started out in 1994 as a small group of parents and teachers interested in providing comprehensive science education to the students in our local classrooms. In 1995, SWEP received a grant from AmeriCorps and Adopt-A-Watershed and began to incorporate science programs, outdoor field studies, and ecological restoration projects into the curriculum of our local school district. SWEP officially incorporated as a non-profit 501(c)(3) organization in 1996. We currently have two staff members, a committed volunteer core, and an active Board of Directors that collectively help us achieve our mission.


Meet the SWEP Staff

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Executive Director

Melissa “Missy” Mohler


phone: 530-583-1430

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Project Director

Ashley Phillips


phone: 530-208-6154

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Environmental Field Instructor

Shannon Keener


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SNAP Americorps member

Addie Drinkwater


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Book Keeper 

Deena Karuna


(530) 320-8366


Board of Directors

Michele Prestowitz – Board President    

Involved with SWEP Since 2013

NPO Project Manager

Sally Lyons –Board Vice Presidents & Treasurer

Board Member Since 2015

Director of Finance

Kelsey Porter – Board Secretary

Involved with SWEP Since 2017

NPO Project Manager

John Eaton 

Involved with SWEP Since 2013

Professor Emeritus

Tamara Anderson

Board Member Since 2006

TTUSD Educator

Tauni Berger 

Board Member Since 2015

Waste Management

Kirsten Pekarek

Involved with SWEP Since 2015

Andi Batie 

Board Member Since 2016

TTUSD Educator

Maggie Bockius 

Board Member Since 2016

TTUSD Educator

Andy Rost 

Board Member Since 2017

Professor, Sierra Nevada College

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