Project of JSC «Baltic Aerogeodesic Enterprise». The works were carried out in order to establish a special regime of economic and other activities, to protect and restore the internal resources of the water body, to improve its hydrological regime and sanitary condition.
The object of the work was the rivers of the Curonian Basin, the Vislin Bay and the Baltic Sea in the Kaliningrad Region. The total length of the surveyed watercourses was 1557.1 km. The work was carried out in several stages.
Field work — laying the main theodolite passages, production of horizontal surveys of riverbeds, channels and floodplains with measurements from the main course and the maintenance of the outline.
Shooting of small rivers and channels on a scale of 1: 5000 with depth measurement profiles every 25 meters and shooting of the channel and the strip along it with a width of 50 m in each direction.
Cameral work — equalization of main leveling courses, cataloging the coordinates and heights of points of the planned
Preparation of a scientific and technical report defining the width of water protection zones and the width of coastal protective strips with a description and display of their boundaries, determining the required number of information signs and places of their installation.