Fig. 6. Flow diagrams of water discharge (Q), NO3-N, TP, and chloride along the course of the River Thur in (a) summer 2012, and (b) spring 2013. Encircled numbers refer to
the monitoring stations labeled in Fig. 1. The gray shaded (or: yellow colored) inputs were calculated to match the observed mass flows at sites T4 and TE. The inputs
represent small tributaries and diffuse input pathways, such as drainage, groundwater infiltration, or runoff in the indicated sections. In August 2012, diffuse pathways
accounted for >50% of the NO3-N, TP, and chloride loads. Note that the diagrams are not exactly to scale