The State Dam Administration of the Free State of Saxony intends to commission a terrestrial survey of approximately 15.5 km of the Wesenitz from the mouth into the Elbe to Porschendorf as well as a further approximately 6.6 km of tributary waters and approximately 36 buildings.

A two-dimensional hydronumeric model is to be created for the Wesenitz river. The basis for this is the measurement of the water, structures and breaklines of the study area from river km 0 + 000 to 15 + 830. The primary aim of the measurement is to produce a basic plan (digital location and elevation plan) for the water level position calculation, which relates to the hydraulically relevant structures of the water hose are concentrated and consist of height-occupied, neatly connected line elements and possibly points.

The editing u. The study area stretches along the Wesenitz from the estuary into the Elbe in Pirna (river km 0 + 000) through the municipalities of Pirna and Lohmen, in the municipality of Dürrröhrsdorf - Dittersbach through the location of Porschendorf up to and including county road 8715 (river km 15 + 830), as well as along another approx. 6.6 km of tributaries, including the structures. The Wesenitz usually has a bottom width of approx. 5 m to 10 m. The work to be contracted essentially consists of the recording of breaking edges, cross profiles (plus edge strips each 10 m from the top of the slope) and the measurement of structures on and in the water.