In order to ensure an efficient, sustainable, and environmentally friendly system of inland waterways that benefits the population and economy within domestic and international contexts, cross-sectional profiles on the navigable rivers Danube, Sava, and Tisza are measured each year. Cross-sectional profiles of the Danube River are measured every year from Grocka to Bačka Palanka, and every other year from Grocka to Bezdan. Cross-sectional profiles of the Sava River are measured from the confluence with the Danube to the border with Croatia. Cross-sectional profiles of the Tisa River are measured from the confluence with the Danube to the border with Hungary.Based on these measurements, navigational maps are created, depicting the waterway routes and river banks.