Nancy Wilson

Nancy is a retired geologist who worked in the petroleum industry for over 31 years.  Nancy is also an active volunteer, having promoted the advancement of women in science, engineering, and leadership roles for years.  She is active with CLSS and also volunteers at the Calgary Zoo.  She and husband Tom have a place on Columbia Lake.


Pat Silver

Having moved to B.C. from Ontario in 2016, Pat is enjoying all the outdoor activities that this beautiful area offers.  She enjoys kayaking on Columbia Lake as well as cross country skiing on various trails throughout Columbia Valley.  As a retiree from the group insurance business, Pat has taken over the role of Treasurer/Bookkeeper in 2020.

Water Quantity Director

Bill Thompson

Bill Thompson is a retired meteorologist. Much of his experience has focused on water management issues both in Canada and abroad. Bill is currently involved in stream flow and other hydrology studies of Columbia Lake for CLSS.

Water Quality Director

Tom Dance

Tom is a member of the Spirits Reach Community located on the west side of Columbia Lake. Tom has more than 35 years of experience in assessing water quality in surface water and groundwater and is a professional hydrogeologist.  He has been involved with the water quality monitoring program on Columbia Lake for the past six years and including the training of volunteers who undertake the monitoring program.  During his working career he was involved with a wide variety of projects to conserve and protect water sources.   He represents CLSS as a member of the board for the Columbia Wetlands Stewardship Partners.


Tom Symington

A former educator and translator, Tom has been a permanent resident on Columbia Lake for the past ten years. As he has become more aware of the lake and shoreline’s fragility, he is anxious to advocate for their sustainable use and development. An abundant supply of clean fresh water is our most precious commodity. Tom was an Area F trustee for both the Invermere Public and Radium Hot Springs Public Library boards and a former Columbia Ridge Community Association board member.

Program Coordinator

Leah Downey

Leah joined CLSS in 2021 as our first full time program coordinator, after completing her diploma in Renewable Resource Management. Leah grew up on a small farm in the Columbia Valley where she has spent her life enjoying the many opportunities the valley has to offer, such as hiking, biking and of course the Columbia Watershed. Leah is very enthusiastic about environmental stewardship and enjoys connecting with others to share her passion for Columbia Lake.

Summer Program Assistant

Lucas Fuertes

Lucas is a third year student at UBC Vancouver, majoring in Geographical Science and specializing in Hydrology and Geomorphology. Originally from Calgary, Lucas and his family have a cabin on Columbia Lake, which helped foster his love for outdoor activities like golfing, archery, and kayaking, and also cultivated his passion for water management and environmental stewardship. He is eager to learn more about his field of study through his work with the CLSS, and looks forward to sharing his knowledge and passion with the community!

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