Author(s)

Tatjana Mijuskovic - Svetmovic

Abstract

The river Drava is the biggest drinking water supplier, as well as essential with its water for agriculture, industry, fishing, river navigation, tourism and recreation, furthermore it is used for energy production. Since the river is also a big waste water recipient, its protection is of the great importance. The waste water coming from the city of Osijek itself and neighbouring urban areas together with industry waste water is discharged into the river without being treated, causing a significant pollution, worsening the water quality, so that at this point it does not meet the prescribed II. class criteria. The paper describes the downstream water quality prognosis of the river Drava, determined with the classical one-dimensional Streeter-Phelps" model, that takes into account only

Keywords