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“29 June” is the international Danube Day. It was first celebrated by the ICPDR in 2004 to highlight the 10th anniversary of the signing of the Danube River Protection Convention. Through the joint effort of different organizations, the celebration of Danube Day throughout the Danube River Basin became an annual event, paying tribute to the Danube and the rivers that flow into it.

daNUbs was a mulitnational EU research project carried out under the leadership of the Technical University of Vienna. The results from this project include estimates of nutrient inputs into the river network (MONERIS), as well as an assessment of the loads of nitrogen, phosphorus and silica transported via the river network. These results indicate that the nutrient status in the Black Sea has significantly improved since the 1980s.

The Accident Emergency Warning System (AEWS) of the Danube River Basin is activated whenever there is a risk of transboundary water pollution, or threshold danger levels of certain hazardous substances are exceeded.

Accidental pollution in the Danube River Basin can cause widespread damage to the environment, and endanger the health of local people and the state of local economies downstream. This was exemplified by the effects of the Baia Mare cyanide spill in Romania in 2000 or by the Hungarian redsludge accident at Ajka in 2010. The ICPDR is working to prevent accidental pollution and to improve response capability by compiling an inventory of all relevant "Accident Risk Spots".

The nutrient levels, notably phosphorus and nitrogen, found in the Danube River and its major tributaries hold significant international importance. This is because they directly contribute to the phenomenon of eutrophication in both the river itself and the Black Sea. Historical trend analysis of nutrient river loads over the past decades shows a significant reduction in the transported nutrient fluxes to the Black Sea. Overall nutrient emissions declined by 30% (nitrogen) and 50% (phosphorus) in the last 15 years. However, the current long-term fluxes are still considerably higher than those of the early 1960ies which represent river loads under low pressures, indicating a further load reduction potential that might be exploited for the benefit of the Black Sea. Nevertheless, in the last 5-10 years the measured loads are rather low and close to the Black Sea targets indicating significant water quality improvement.

Floods are natural phenomena. They can, however, turn into disasters causing widespread damage, health problems and even deaths. This is especially the case where rivers have been cut off from their natural floodplains, are confined to man-made channels, and where houses and industrial sites have been constructed in areas that are naturally liable to flooding.

The best way to protect and manage water is by close international co-operation between all the countries within the river basin – bringing together all interests upstream and downstream. All countries of the European Union are using a river basin approach for water management since the adoption of the EU Water Framework Directive.