The Hydrologic Ensemble Prediction EXperiment (HEPEX) is an international project that brings together hydrological and meteorological communities from around the globe to build a research project focused on advancing probabilistic hydrologic forecast techniques.
The HEPEX mission is to demonstrate the reliability of hydrological ensemble predictions (HEPS) that can be used with confidence by emergency management and water resources sectors to make decisions that have important consequences for economy, public health and safety.
HEPEX further provides a platform for the exchange for results, progress and hypothesis of international scientific research in the filed of hydrological ensemble prediction systems.

Participation in HEPEX is open to anyone wishing to contribute to its objectives. Individuals interested in becoming involved in HEPEX can do so as a member of the HEPEX Science Steering Group, User Council, or an affiliated international organization, or through participation in the HEPEX projects and activities.
| A HEPEX Test Bed is a setting for HEPEX-community experiments. A test bed could be a single basin (and its subbasins), a region containing multiple basins, or possibly a global collection of basins that facilitate experiments addressing questions over a range of scales and climates. Regardless of geographical domain, test beds focus on one or more clearly defined HEPEX science questions, have the potential to develop data resources needed for community experiments to address the questions, and are expected to include active user participation. |
Proposals for eight test bed projects were presented at the second HEPEX workshop. Read more about the Current HEPEX Testbeds.