Canada requires a national groundwater monitoring system that supports a holistic water cycle understanding and analysis. Currently, groundwater remains the most underrepresented component at the national scale. While provincial networks operate at watershed and regional levels, they could benefit from shared knowledge and harmonization toward shared findability, accessibility, interoperability, and reusability (FAIR). Recent engagement with Environment and Climate Change Canada and the Canada Water Agency indicates strong public support for a federal role in advancing national groundwater monitoring. This session solicits presentations from government, academia, and NGOs that will share groundwater monitoring experiences, opportunities and shortcomings. Contributions may include innovations in the design, operation, and implementation of regional and watershed-scale networks, data standardization and integration, remote sensing and Earth observation, machine learning, community-based approaches, and case studies of network optimization. The overall aim of this session is to foster dialogue on how regional and national perspectives can be bridged to support groundwater assessment, management, and policy, and to help advance discussions about what a future national groundwater monitoring system might look like.