A HYDROLOGICAL STUDY OF THE RISING WATER LEVEL AT LAKE NAKURU

ABSTRACT
Onwards from the year 2011, there has been an unprecedented lake level changes by a significant
proportion in the Eastern Rift Valley lakes in Kenya. Rainfall records obtained from the highland
areas in Kenya have a significant correlation with the observed increase in the Eastern Rift Valley
lakes that is partially attributed to the regular occurrence during the period after the July to
September short rains that result from the S.E. Trade Winds. Though not thoroughly examined,
the documentation of rising water levels in the four Ramsar sites has been done by use of
Geographic Information System (GIS) digital techniques and hence information has been extracted
and represented from Landsat satellite image data for some designated periods since the beginning
of the phenomenon.
This study shall encompass mainly the sources of water for Lake Nakuru. The study area was
selected due to the alarming rise in water levels in the lake, although there was little long term and
consistent rainfall and stream flow data. The Mau catchment that is the source of rivers Makalia
and Nderit, and the Njoro watershed are the main areas of interest. The changing profiles of the
rivers due to increased discharge shall be closely analysed.
There has been a growing interest in the study area also by the Kenya Water Towers Agency
(KWTA), Kenya Meteorological Department (KMD) and the Ministry of Water. Discharge data
was obtained from the Water Resources Management Authority (WRMA) offices at Nakuru while
the rainfall data was obtained from the Kenya Meteorological Department.

 

AttachmentSize
NYABUTI FRANCIS MOTURI.pdf2.07 MB