Hydromorphology – the Study of the Hydromorphological Characteristics of Surface Water and the Changes in the Hydromorphological Processes and Characteristics Resulting from Various Disturbances of the Aquatic Environment

With the increasing demand for water for irrigation, power generation, breeding of aquatic organisms and activities affecting water and waterside land due to settlement, development of transport infrastructure and agricultural land use, man has caused numerous changes to the natural hydromorphological characteristics. Many barriers and dams were built, interrupting the characteristic longitudinal flow continuity, more often than not making the corridors narrower and depriving the rivers of their natural channel patterns. Variegated riverbeds have in many cases been replaced with rectangular and trapezoidal shapes, while their banks and beds have been reinforced using rigid materials.

Organisation of Eight Regional Consultations on the Draft 2015–2021 Water Management Plan

The Institute for Water planned, organised and carried out eight regional consultations on the draft 2015–2021 Water Management Plan for the Ministry of the Environment and Spatial Planning. The eight consultations discussed the river basins of the Sava (lower, middle and upper), Drava, Mura and Savinja and the catchment areas of the Soča and the Adriatic rivers including the sea. Over 440 people actively participated in moderated consultations that took place in Novo mesto, Maribor, Murska Sobota, Koper, Idrija, Ljubljana, Kranj and Celje.

Consultations on the Draft 2015–2021 Water Management Plan: The IWRS is Organising Sectoral Consultations for the Ministry of the Environment and Spatial Planning

The IWRS is preparing sectoral consultations on incorporating the needs of individual sectors into the Water Management Plan. Three sectoral consultations will be organised in Ljubljana for the Ministry of the Environment and Spatial Planning – for agriculture (22 October 2015), the energy sector (28 October) and water regulation (30 October).

Eight Regional Consultations on the Draft 2015–2021 Water Management Plan Organised by the IWRS for the Ministry of the Environment and Spatial Planning

The Institute for Water planned, organised and carried out eight regional consultations on the draft 2015–2021 Water Management Plan for the Ministry of the Environment and Spatial Planning. The eight consultations discussed the river basins of the Sava (lower, middle and upper), Drava, Mura and Savinja and the catchment areas of the Soča and the Adriatic rivers including the sea.

Catalogue of Flood Events in Slovenia

For the purposes of operational hydrological forecasting and hydrological analyses, the Institute for Water of the Republic of Slovenia is establishing a database called the Catalogue of Flood Events in Slovenia. The Catalogue of Flood Events will include data on surface water flood events from various professional and other reliable sources, specifically from the first accessible source and up to the last recorded flood.

Updating the Integrated Maps of Floods

In order to implement the Decree on Conditions and Limitations for Constructions and Activities on Flood Risk Areas (Official Gazette of the RS, No. 89/08) concerning the preparation of national spatial plans of state priority, records of HH studies have been established for which both the IWRS and the Slovenian Environment Agency have issued opinions confirming their compliance with the methodology rules and a data layer at the cadastral municipality level has been developed (published in the Environmental Atlas).

Preliminary Identification of Key Inundation Areas of High Waters in the Area of Slovenia

Significant flood hazard areas are defined as part of flooding areas where floodwater can spill and be retained without significant damage, potentially reducing any damaging effects downstream. The Floods Directive prescribes taking into account the areas where floodwater could be retained (natural floodplains). The designation of areas is based on both relevant implementing regulations, i.e. the Decree on Drawing Up a Water Management Plan and the Rules on Mapping Methodology.