The National Science Foundation (NSF) Division of Earth Sciences awarded a $656,350 Project Grant to Cornell University for a collaborative research project titled "Unraveling the Link between Water Ages and Silicate Weathering Rates at the Catchment Scale." This grant, funded through the Geosciences CFDA 47.050 program, aims to better characterize the relationship between groundwater ages and silicate weathering rates at the catchment-scale through a combined hydrologic and geochemical approach. The research will leverage new comprehensive water age and weathering tracer datasets to inform a coupled physical transport hydrologic and isotope-enabled, multicomponent reactive transport model. This study will be conducted at the Sagehen Creek Basin, a snowmelt-driven, igneous, montane watershed in California. The project will support two early career scientists, one PhD student, and a field technician, while also providing opportunities for undergraduate research and developing educational products to engage the broader public, high school students, and instructors on hydrology and water quality themes.