Danube Water Balance project aims to improve the effectiveness of the joint, transboundary and cross-sectoral water management in the Danube River Basin (DRB) to cope with water quantity issues. The project will deliver a basin-wide water balance model for surface and groundwater, tested in transboundary sub-basins, along with the application of climate scenarios. It will foster improving data management and capacity building by preparing a common training material and establishing an expert hub.

Danube Water Balance Partnership

11 countries, 20 partners, 13 associated partners

Danube water region © Interreg Danube Region

Project description

The extreme and trend like climate change impacts cause significant water balance issues in the Danube River Basin (DRB), already posing major challenges also for the environment, the economy and the whole society. Water management in the DRB is characterized by scattered data availability and various national calculation methods, ultimately leading to country-scale or sub-regional mosaics about the water balance. A jointly developed data management and a water balance model is needed to cope with the transnational water quantity challenges of the basin. The Danube Water Balance project aims to overcome this situation and contribute to sustainable, integrated transnational water management in the DRB. The overall objective of the project is to develop a harmonized water balance modelling system in the DRB. Our main outputs will cover four fields:

water-related processes included n the model design © IIASA

CWatM - Water-related processes included in the model design (https://cwatm.iiasa.ac.at)

  1. Improved data management for present and future water balance calculations. This will consist of (i) a data repository for all input and output data of the model, (ii) a set of tools supporting input data collection, validation, conversion and result visualization and interpretation and (iii) a new data management strategy providing a sound basis for data related activities of future water balance and water management modelling. Both the data repository and the tools will be open access, therefore the list of beneficiaries extends from water experts using the developed model through experts from other water related fields to decision makers willing to understand the main characteristics of the DRB as a hydrological system.
  2. CWatM - The state-of-the-art, open-source water balance model for the DRB, that allows the quantification of water balance components for the entire basin and for selected areas of interest. The model will be calibrated and validated against measured data collected and processed by jointly defined data management protocols, assuring the common acceptance of model results. The foreseen afterlife of the water balance model is a fully functional water management model of the basin, by which a more reasonable, sustainable and adaptive water management can be achieved in the long run.
  3. Elaborated water balance scenarios for 4 selected transboundary sub-basins, namely Morava (CZ, SK & AT), Tisa (HU, SK, RO, RS & UA), Upper Sava (SI & HR), and Drina (RS & BA). This key action within the project will be the cornerstone of future cooperation by providing a good exercise for our international experts to test and enhance the Danube River Basin Water Balance model (DRBWBM) and the founded common data repository.
  4. Improved stakeholder insight into transboundary water balance methodology: strong emphasis will be put on sectoral stakeholder involvement and capacity building in the project. Besides the essential technical modelling steps, it is planned that several trainings will be carried out and an expert hub will be established that will consist of modelling experts, water managers, and other professionals from water-related sectors. 
Interreg Danube Region © Interreg Danube Region

20 PPs: university or research institute: 9, national public body: 6, sectoral agency: 3, interest group: 1 public service: 1 
13 ASPs: ministry: 5, national public body: 4, sectoral agency: 2, public service: 1, research institute: 1

Specific objective 2.3 of the Danube Transnational Programme: Sustainable, integrated, transnational water and sediment management in the Danube River Basin ensuring good quality and quantity of waters and sediment balance

Budget:  3 028 320 EUR 

Lead partner organization: OVF (Hungary) & unofficially co-leader: Serbia