The Arctic Glacial Lakes project was funded by the US National Science Foundation, Arctic System Science Program from 2015 to 2018, with the goal of understanding 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. The study was motivated by the need to improve interpretations about past and present environmental changes that are recorded by sediments that accumulate in Arctic lakes. The focus was on lakes in glaciated watersheds because their sediment often reflects changes in the size and melt rate of upstream glaciers, which are among the most dynamic components of the rapidly evolving Arctic system.