Summary:

The Lake Dąbie is located in Lower Odra estuary. That water region plays very important role for navigation, because through the Lake Dąbie the main seaway between Schwedt and Pomeranian Gulf is running. The Lake in strongly silted with polyfractional sediments with high clay and silt particles content and also with high organic matter content. That high clay and silt particles content causes that muds from the Lake have semi-cohesive or cohesive properties. Settled muds cause difficulties in seaway exploitation and significant decrease of its capacity. During 34 years the Lake Dąbie capacity decreased about 12,1 mln m3. The estimated mean year increase of sediments volume is equal about 356 000 m3. The authors performed the preliminary estimation of erosion parameters for sediments from Lake Dąbie on the base of theirs physical and rheological properties.