Sediments that accumulate in lakes contain a wealth of information about past and present environmental changes within a watershed. Lakes in glaciated watersheds record changes in the melt rate of upstream glaciers, which are among the most dynamic components of the rapidly evolving Arctic system. This project will develop the first quantitative system model to simulate the chain of processes that control how weather and climate are filtered through the glacier-hydrology-lake-sedimentation system and are recorded in physical components of lake deposits in glaciated catchments.