In turn, properly tuned numerical models are often suitable for more detailed and flexible space-time description. The numerical modelling of the hydrodynamic processes of the lake is based on established by using the recent survey. The colours indicate the instantaneous volume fraction of water initially originated from the bay. The displacement and mixing of water masses during storms is significant and the initial state is usually never restored even after long, calm periods. In this case the colours indicate the volume fraction of water initially originated from the reed-zones.
Windstorms can easily stir-up the uppermost sediment layer of the bottom in the pelagic zones.
When the wind decreases the water masses leaving the reed-zones are much less rich in suspended solids. The colours from green to red indicate its growing magnitude. The research achievements support the planning of water management measures for improving the existing conditions of the reed-zones. At the same time it is expected to meet also the nature protection, fishing, reed production and recreation interests. In this article we have presented investigations done with RCM9 current meters.