smash documentation#
Date: Nov 08, 2025 Version: 1.1.3
smash is a computational software framework dedicated to Spatially distributed Modeling and
ASsimilation for Hydrology, enabling the tackling of spatially distributed differentiable hydrological
modeling, with learnable parameterization-regionalization. This platform enables the combination of vertical and
lateral flow operators, either process-based conceptual or hybrid with neural networks, and performs high-dimensional
non-linear optimization from multi-source data. It is designed to simulate discharge hydrographs
and hydrological states at any spatial location within a basin and reproduce the hydrological response of
contrasted catchments, both for operational forecasting of floods and low flows, by taking advantage of
spatially distributed meteorological forcings, physiographic data, and hydrometric observations.
Getting Started
New to smash? Check out the getting started guides.
User Guide
The user guide provides in depth-information of the smash library.
API Reference
The reference guide contains a detailed description of the smash API.
Math / Num Documentation
This documentation contains a detailed description of the smash model operators and associated mathematical and numerical tools.