Trends in the concentration of BOD in rivers and between 1992 and 2002 in different countries
- Jul 09, 2008 - BOD5 concentrations in rivers between 2001 and 2006 in European countries
- Jan 31, 2008 - Concentration of BOD5 in rivers in different countries between 1992 and 2005, shown in consequent time intervals.
- Feb 01, 2006 - Trends in the concentration of BOD in rivers and between 1992 and 2003 in different countries
BOD5 data used for all countries except Estonia where BOD7 data used. Concentrations are expressed as median of annual average concentrations. Data are from representative river stations. Stations that have no designation of type are assumed to be representative and are included in the analysis. Consistent time series trends have been calculated using only stations that have recorded concentrations for each year included in the time series (see Methodology section for further details). Consistent time series then averaged for the 3 time periods 1992 to 1995, 1996 to 1999 and 2000 to 2002.