Both the short-term and long-term campaigns were performed during summer and winter conditions, meaning respectively a low and high river discharge. The short-term campaigns were carried out from a boat during spring tide, anticipating that normally at highest tidal range the highest flow velocities occur. Flow velocity was measured using an Acoustic Doppler Current Profiler (ADCP).

Both the short-term and long-term campaigns were performed during summer and winter conditions, meaning respectively a low and high river discharge. For the long-term campaigns, instruments were deployed for several weeks: CTD and ADCP.