The Nzoia River Basin received above average rainfall in December 2009. Moderate to heavy rainfall occurred in the middle and towards the end of the month. In response the Nzoia river level at Rwambwa Bridge remained below the alert level of 2.8m for the whole month.
The entire Nzoia basin is expected to receive rainfall which is above the long term average in January 2010. In view of this, river levels are expected to gradually rise and may result into flooding.