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The article presents the history of research of the left tributaries of the Middle Dnieper. The periodization of research by chronological periods from the IV century is developed. B.C. until the end of the XVIII century. The periods and key stages of river research during the corresponding period are highlighted. The issues of description of the respective rivers in antiquity and the Middle Ages are covered, in particular the elements of the geographical position of their river systems, water regime, feeding conditions, economical use, elements of river valleys and the organic world of their basins. Chronicle data and original works of scientists and politicians of these time periods are processed. The issues of geographical position of the river network, number and names of rivers of the studied sub-basin of the Middle Dnieper according to the maps of the XVI-XVIII centuries are covered in detail. Cartographic works of cartographers from France, the Netherlands, Italy, and Muscovy have been studied. Particular attention is paid to the cartographic works of the French cartographer Guillaume Levasser de Beauplan, who began a new stage in the mapping of the main left tributaries of the Middle Dnieper and their smaller tributaries. For the first time, 137 rivers of the Left Bank of the Middle Dnieper were marked on his maps. He put forward the theory of the formation of the channels of the left tributaries of the Middle Dnieper. On the maps of 1680 – 1760, we notice the beginning of the stage of stagnation in the image of the hydrographic grid of the left tributaries of the Middle Dnieper. The information according to the descriptive data of the Left Bank of Ukraine of the end of the XVIII century is singled out. The first detailed descriptions of the rivers – Kyiv, Chernihiv, Kharkiv governorates and Little Russia Governorate in the period from 1775 to 1800 were developed. A complete catalog of rivers of the I, II, III and IV order of the Middle Dnieper sub-basin according to descriptive data within the river basins with indication of their length is given.

gìdrologìâ, gìdrohìmìâ ì gìdroekologìâ

RETROSPECTIVE ANALYSIS OF STUDIES OF THE RIVER NETWORK OF THE LEFT BANK OF THE MIDDLE DNIEPER (FROM THE FIRST MENTIONS TO DETAILED DESCRIPTIONS – IV CENTURY BC – THE END OF THE XVIII CENTURY)