Changes in the Lower Drava River Water Quality Parameters Over 24 Years
Abstract
The goal of this study was to analyse 13 physico-chemical and microbiological parameters of the Drava River water at three sampling sites in the lower Drava region (eastern Croatia) over two distinct periods: the pre-war period between 1985 and 1992 and the post-war period between 1993 and 2008. Over both periods, most parameters kept within the tolerable water quality limits, while NO3-N, NH4-N and BOD5 were higher. The lower Drava showed slight organic pollution with high concentrations of dissolved oxygen. High levels of total coliforms and heterotrophic bacteria in the post-war period were only found downstream of the town of Osijek. Upstream of Osijek, the river showed a tendency for improvement.
© 2011 Vlatka Gvozdić, Josip Brana, Dinko Puntarić, Domagoj Vidosavljević, Danijela Roland, published by Institute for Medical Research and Occupational Health
This work is licensed under the Creative Commons License.