Physical and biogeochemical observations from Bear Lake, New York, USA: 2024-2026

This resource contains physical and biogeochemical observations from Bear Lake, an open-basin, dimictic lake located in western New York State, USA. These data were collected to gain a comprehensive understanding of the modern lake system to support numerical model calibration and interpretation of paleoclimate data from lake sediments. The lake surface area is approximately 49-hectares with a 2600-hectare catchment. The maximum depth is 8 meters. Profiles of water temperature, stable isotopes of oxygen and hydrogen, turbidity, chlorophyll, specific conductivity, and dissolved oxygen were collected from April 2024 through February 2026. A thermistor string also monitored water temperature at distinct depths during this period. Bear Lake experiences ice cover during winter, and this resource has observations of ice cover thickness. This resource is divided into both raw and post-processed datasets, along with the R and Python code to do that processing and create figures. These datasets might be useful for regional limnology studies, model calibration, or future paleoclimate reconstructions.