For both 2008 and 2009, precipitation was well above normal for the entire state. Statewide precipitation for the two year period was 106 inches, the highest recorded to date in Missouri weather records (1894 to present). In the graph below, the horizontal line represents the 30 year precipitation average in inches (1971-2000) and the points represent individual years from 2001-2009.
Statewide, rainfall has been above average for 3 consecutive years. The seasonal trend graphs for many lakes in this report reflect this by displaying above average concentrations of nutrients, suspended sediment and, in some cases, chlorophyll for the years 2007-2009.