Since the assessment of surface water resources should be carried out within the river basin, the article proposes the structure and content of the atlas of a small river using the example of the r. Сubolta precisely for the realization of this goal. It is proposed to allocate 2 blocks and 5 sections. Each of the thematic blocks of the atlas is described and the names and descriptions of the maps are presented. Designed page layouts. The required map scales are proposed and a cartographic basis for each of the selected scales is developed.