Last updated: 18 Dec 2023 | Recent visits: 18 C CM Rivers and Catchments of Europe - Catchment Characterisation Model (CCM) The Catchment Characterisation Model (CCM2) database covers the entire European continent, including the Atlantic islands, Iceland and Türkiye. It includes a hierarchical set of river segments and catchments based on the Strahler order, a lake layer and struct... WEB PUB DWN GEO