The HYPE model set-up to the land surface across the globe is called “World-wide HYPE”. SMHI can choose to share this model (i.e. both source code and the input files) for appointed geographical domains under an Open license (CC BY 4.0) and some appointed user conditions. You can ask for permission to use part of the World-wide HYPE and depending on your intended purpose, we can reach an agreement. To avoid confusion, we will only share the World-wide HYPE for regions where SMHI does not apply any other model system with better performance.

Note: When you download the files, you automatically agree to follow the User Conditions stated below.

The World-wide HYPE

This HYPE model covers an area of 135 million km2, divided into some 131 300 catchments following the river networks. The average size of catchments is 1020 km2. Catchments of deserts and flood plains have larger areas (~4500 km2, and ~3500 km2, respectively), while catchments in step areas at high altitudes have in general smaller areas. The model uses a large number of Open databases and is calibrated against time-series of various sources of observations (both from in situ monitoring and Earth observations). The World-wide HYPE model is continuously improved and updated in new model versions at SMHI.

How to obtain a piece of the World?

The World-wide HYPE (i.e. both source code and the input-data files) for extracted geographical domains can be obtained by sending the form below. We may charge an extraction fee of € 4500 for delivery. As a user of the World-wide HYPE model you commit to give feedback to SMHI about model evaluations, improvements or modifications of the model input-data files or the HYPE code.

Ask for a piece of the World-wide HYPE: Contact us

User conditions for the World-wide HYPE model

1      Background

The hydrological catchment model HYPE (Hydrological Predictions for the Environment) simulates water flow and substances on their way from precipitation through soil, river and lakes to the river outlet. The HYPE code is developed in an open source community (

HYPE has been applied in many different regions, e.g. Sweden, Europe, Niger and India by SMHI. Recently, SMHI has also developed a HYPE-model for the whole world, called World-wide-HYPE. SMHI may share the World-wide HYPE for regions where SMHI does not apply any other model system with better performance.

Party A would like to explore, use and improve the World-wide HYPE model for local/regional purposes and party B would like to learn more about hydrology in different regions globally in order to improve the World-wide-HYPE. The Parties therefore enter into this Agreement, in order to specify rights and responsibilities.

2      Licensor

The Swedish Meteorological and Hydrological Institute, with principal address: SE- 601 76 NORRKÖPING, SWEDEN, also referred to as “SMHI”.

3      License Conditions

3.1     The License

When downloading the World-wide HYPE Model you are granted an Open model license: Creative Commons Attribution 4.0 International (CC BY 4.0).

The License for the World-wide HYPE Model is free of charge, but there may be an extraction fee.

Your obligations according to the License includes:

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor supports or endorses you or your use.
  • No additional restrictions — You may not apply legal terms or technological measures to the original downloads that legally restrict others from doing anything the license permits. Refined products may, however be distributed under other terms or restrictions.

3.2     Attribution

The Model shall be attributed to the Licensor.

In publications the Model should be referred to by pointing at: and by citing:

Lindström, G., Pers, C.P., Rosberg, R., Strömqvist, J., and Arheimer, B. 2010. Development and test of the HYPE (Hydrological Predictions for the Environment) model – A water quality model for different spatial scales. Hydrology Research 41.3-4:295-319.

Arheimer, B., Pimentel, R., Isberg, K., Crochemore, L., Andersson, J. C. M., Hasan, A., and Pineda, L.(2020): Global catchment modelling using World-Wide HYPE (WWH), open data, and stepwise parameter estimation, Hydrol. Earth Syst. Sci., 24, 535–559,, 2020.

4      Feedback

As a user of the World-wide HYPE Model you commit to give feed-back to the Licensor about model evaluations, improvements or modifications of the Model (or the HYPE code).  For this, you can use the Feedback form above.