A Nationwide Dataset of Stable Isotopes in Meteoric and Terrestrial Water Across Peru

Water Stable Isotopes (δ¹⁸O and δ²H) are valuable tools for tracing sources and interactions in the water cycle, and also provide important information dedicated to understanding physical mechanisms related to global climate. Despite their significance, the topic of isotopic research in South America has been hindered by limited data. To address this gap, we launched a groundbreaking national-level water stable isotope dataset covering different water sources in Peru. The dataset contains in-house data and can be linked to previously published datasets. The dataset covers 493 water collection sites and provides isotopic information from 2000 to 2021. The dataset is implemented with a standardized metadata template, containing essential information such as sample type (e.g. groundwater, precipitation, river, spring, and others), sampling frequency (e.g. biweekly, daily, monthly) from sea level to 5000 m a.s.l, coordinates, contact, references, and analytical precision about the collector points to allow a comprehensive use of the dataset. Additionally, the dataset is stored on Zenodo, and users can use the WSI-PeruDB Python package to visualize the data.