In 2017, the non-profit Living Lakes Canada, began a community-based groundwater level monitoring Program in the Upper Columbia Basin in the interior of British Columbia. In this region the aquifers are small and fragmented, and characterized by the mountainous environment. The Provincial Groundwater Observation Well Network (PGOWN) has eight observation wells in this area. Collaboration is needed among citizens, First Nations, all levels of governments, non-government organizations, and industry to collect sufficient data to inform groundwater management and protection, as stated in several reports, including reviews of the PGOWN and BC’s 2010 audit on the management of groundwater resources. Living Lakes’ Columbia Basin Groundwater Monitoring Program is facilitating this collaboration by partnering with well owners (such as citizens, First Nations, local governments, and water supply system operators) to track groundwater levels in existing wells. The Program identifies priority areas for monitoring; assesses well suitability for monitoring; establishes monitoring agreements with well owners; secures, installs, and maintains equipment; conducts monitoring; trains and supports well owners to assist with monitoring; and reviews and manages the data. Currently there are 32 Volunteer Observation Wells in the program, and more can be added as resources for monitoring become available. The data are shared publicly on the Columbia Basin Water Hub and the BC Real-time Water Data Tool. This presentation will provide an overview of the Program, lessons learned during its development and implementation, the proven replicability of the Program, and how the data are improving our understanding of groundwater conditions and can support decision-making.