Sediment discharge (pentad-media) at the mouth of the river Fyrisån and mean values of sediment accumulation in bottom-placed sediment traps during 5 measuring periods at a depth of about 20 m, 550 m in front of the mouth of the river Fyrisån in the bay Granebergsviken in Lake Ekoln (station no. 0202). Modified after Axelsson 1980 (UNGI Rapport Nr 52.

The calculated sediment inflow is mainly based on data of water discharge and suspended-sediment concentration, published by Kvarnäs (Kvarnäs, H., 1978: Dynamiska studier i Vänern och Ekoln. SNV, PM 1030). As shown by the diagram the rate of sedimentation was high during the autumn of 1971 though the inflow of sediment was insignificant. This was probably due to erosion, resuspension and transportation of sediment from the shallower parts of the river mouth area and the bay to the deeper parts.

The sediment-redistribution and the secondary transportation of sediment out from river-mouth areas is often underestimated but probably of great importance for the sediment accumulation within the deeper basin parts.

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