Research on the hydrogeographical features of Croatian rivers is mainly related to karst rivers, but also to those whose hydomorphodynamic properties provide opportunities for the exploitation of their potentials. The subject of this research is the river Bosut and its catchment area, located in the far east of Croatia, more precisely in the area of Slavonia and Srijeme. Although the mentioned river does not have the same hydrogeographical conditions as those in the Peripannonian, mountainous or coastal area of Croatia, Bosut, together with the largest tributary, Biđa, is the 5th longest in the Republic of Croatia. The paper will consider important complaints, natural geographic framework, as well as hydrogeographic characteristics, of which the most important elements are the main fluid and the origin. Since the river basin covers 2572 km2, additional focus will be analyzed by the change over the past 150 years. The changes will be analyzed within the hydrogeographical characteristics: length and coefficient of development, traffic and infrastructure, and land use. The analysis will be carried out in comparison with older maps from the period of Austria-Hungary, SFRY, recent digital orthophotos, as well as data from the CORINE nomenclature for vegetation and land use. The results of the work indicate indisputable spatial changes, although they are correlated with a longer period observed. The use and purpose of land whose analysis was conducted in a shorter interval show weaker spatial changes, which may be related to the peripheral position, poorer population or protection of the valuable ecosystem of the Spačva forest.