Introduction ============ Pastas is an open source Python package to analyse hydro(geo)logical time series. The objective of Pastas is twofold: to provide a scientific framework to develop and test new methods, and to provide a reliable ready‐to‐use software tool for groundwater practitioners. All code is available from the `Pastas GitHub `_. Want to contribute to the project? Check out the :ref:`Development` section. .. figure:: _static/example_output.png :figwidth: 500px If you find Pastas useful and use it in your research or project, we kindly ask you to cite the Pastas article published in Groundwater journal as follows: - Collenteur, R.A., Bakker, M., Caljé, R., Klop, S.A., Schaars, F. (2019) `Pastas: open source software for the analysis of groundwater time series. Groundwater `_. doi: 10.1111/gwat.12925. .. toctree:: :maxdepth: 2 :hidden: User Guide Concepts Examples Development API Docs Release Notes Publications References