This is the 46th International Symposium of the North American Lake Management Society (NALMS), taking place November 3–6, 2026, in Kelowna, British Columbia, Canada. The conference brings together scientists, environmental managers, policymakers, consultants, watershed organizations, and community stakeholders to share the latest research and practical approaches for protecting and managing lakes, reservoirs, and their watersheds. The 2026 theme, "Swimming Upstream: Tackling Environmental Challenges through Partnership, Innovation, & Science," reflects a focus on addressing water resource challenges through collaboration and evidence-based management. Kelowna, located in one of Canada's most water-scarce regions, provides a fitting backdrop for discussions on climate change, watershed resilience, and sustainable water use.