Hydrographic characteristics (temperature, salinity, oxygen, pH, water transparency) were performed in 2006–2011 and 2012–2017. a comparative analysis that did not show significant changes in physico-chemical conditions in pelagic and benthic habitats. So far, there is only one type of man-made structures in the Lithuanian sea area, which can affect certain hydrographic parameters - hydrotechnical equipment, more precisely - Klaipeda port gate piers. Their potential impact on the coastal hydrological regime is examined in the report. The physical parameters (temperature, salinity, current velocity, circulating) have no effect on sand embankment, although they can locally reduce the impact of waves on shore erosion. For the D7C1 and D7C2 criteria at regional level, indicators are proposed that should be developed at regional and national level in the future.

Hydrographic characteristics (temperature, salinity, oxygen, pH, water transparency) were performed in 2006–2011 and 2012–2017. a comparative analysis that did not show significant changes in physico-chemical conditions in pelagic and benthic habitats. So far, there is only one type of man-made structures in the Lithuanian sea area, which can affect certain hydrographic parameters - hydrotechnical equipment, more precisely - Klaipeda port gate piers. Their potential impact on the coastal hydrological regime is examined in the report. The physical parameters (temperature, salinity, current velocity, circulating) have no effect on sand embankment, although they can locally reduce the impact of waves on shore erosion. For the D7C1 and D7C2 criteria at regional level, indicators are proposed that should be developed at regional and national level in the future.