The Influence of Sewage System on the Functioning and Quality of Krakow’s Watercourses

Figure 3

Sampling sites—examples: (a) the Wilga river, (b) the Prądnik-Białucha river, (c) drainage ditch in the Decius Park, (d) a drainage ditch in the Wilga drainage area, (e) and the spillways, the Vistula River.