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Forest evapotranspiration is a key component of the water balance in mountain ecosystems and plays an important role in regulating regional hydrological processes. Accurate assessment of evapotranspiration, a key component of the water cycle, remains challenging due to the spatial and temporal variability of vegetation water use and the limitations of individual observation methods. The objective of this study is to assess forest evapotranspiration in the Rhodope Mountains (Bulgaria), simulated using the open sour...

Manual measurement of flow velocity and streamflow discharge during high waters is often impossible because of different factors: night events, harsh meteorological conditions, very high dangerous river velocities and levels or infrastructure destruction. The purpose of this study is to determine maximums of river flow velocity and streamflow discharge with hydraulic engineering methods, as well to determine the modulus of runoff at some stations in the East Aegean River Basin in South Bulgaria for the period betw...