Oxygen consuming substances in rivers

This indicator illustrates the current situation and trends regarding biochemical oxygen demand (BOD) and concentrations of total ammonium (NH4) in rivers. The key indicator for the oxygenation status of water bodies is BOD, which is the demand for oxygen resulting from organisms in water that consume oxidisable organic matter.

Source: http://www.eea.europa.eu/data-and-maps/indicators/oxygen-consuming-subst..., retrieved on 14-04-2015.

Data host: 

European Environment Agency