Groundwater quantity responds to long-term climate change and shorter-term regional climate oscillations. These climate drivers alter the complex interconnections of the terrestrial water cycle, including recharge, evapotranspiration, and groundwater interaction with surface water. Yet temporally and geographically sparse monitoring, and the delayed response of groundwater leads to gaps in our understanding of how groundwater quantity evolves under changing climatic conditions. The impacts of climate variability are intensifying across Canada and globally, so the goal of this session is to explore approaches to climate integrated groundwater quantity assessment. This session invites contributions that quantify interactions between climate drivers and groundwater quantity. We welcome presentations that: (1) demonstrate methods for integrating climate projections into applied groundwater models; (2) illustrate how climate-groundwater integration improves forecasting, planning, and adaptive management; (3) advance methods for quantifying and communicating uncertainty; and (4) reflect on the challenges and opportunities in applying different approaches under conditions of climatic change. By bringing together methodological advances and case studies from diverse settings, this session will showcase how quantitative groundwater-climate integration is advancing. The session will emphasize how models, methods, and data analysis can support adaptive strategies and sustainable decision-making in the face of a changing climate.

• 10:30 am – 10:45 am | Using groundwater recharge simulations to inform adaptation to climate and land cover change at the municipal scale – Emmanuel Dubois
• 10:45 am – 11:00 am | Comparative Drought and Recovery Response Across the Atmosphere-Aquifer-Stream Continuum – Armita Motamedi
• 11:00 am – 11:15 am | Development of a Nova Scotia-scale fully-integrated groundwater – surface water model for climate change impact analysis – Steven Frey
• 11:15 am – 11:30 am | Evaluating subbasin-scale hydrologic variability in the South Saskatchewan River Basin with a fully integrated surface water – groundwater model – Stephanie Bringeland
• 11:30 am – 11:45 am | Another dimension of uncertainty: Representing Permafrost in Regional Scale Modelling – Melissa Bunn
• 11:45 am – 12:00 pm | Sustainability Assessment of Groundwater-Based Irrigation in Kobo Valley, Northern Ethiopia: Recharge Estimation, Water Quality, and Soil Chemical Dynamics – Gashaw Tesfaw Chekole