Basic information on geodesy and its significance in hydrometeorological research is given; works with topographic maps and plans are considered; types of geodetic measurements, their methods and assessment of results accuracy; theory and arrangement of geodetic instruments; issues of creation of geodetic substantiation and production of topographic surveys of the area in various ways; features of geodetic work when surveying river basins, lakes and reservoirs are highlighted; describes the rules for graphic design of drawings and topographic plans in accordance with GOSTs.