In the context of global change, increasing tree species diversity has been proposed as a strategy for forest adaptation, given its generally positive relationship with productivity. However, However, changes in species composition and diversity may also influence forest water balances, notably through their effects on evaporation losses from canopy interception. The objective of this project was to understand the effect of species diversity on canopy rainfall interception. The project was conducted at the IDENT (International Diversity Experiment Network with Trees) experimental site in Sainte-Anne -de-Bellevue (Quebec, Canada). For 28 events during the summer of 2023, incoming precipitation was measured in a nearby open area and throughfall was measured weekly using containers (11 cm diameter) installed under the canopy. Measurements were conducted in single-species stands as well as in two- and four-species mixtures of broadleaved species (Acer rubrum, Betula alleghaniensis, Betula papyrifera, and Quercus rubra) and coniferous species (Abies balsamea, Pinus strobus, Picea glauca, and Larix laricina). Interception ratios were calculated and compared among monocultures and mixtures to assess whether increasing species diversity alters canopy interception and associated evaporative losses. Results of this project provide a better understanding of how certain management measures promoting biodiversity could affect water resources in forests under changing climatic conditions.