WRA says water levels in all the five lakes in the Rift Valley have risen to the highest recorded levels in recent years.
The main gate to Lake Nakuru has been completely submerged, with the KWS urging tourists to access Lake Nakuru National Park through Lanet and Nderit gates.
Lake Baringo has expanded from 236 square kilometres in 2015 to about 270km square, posing a threat to adjacent homesteads and institutions.
Alarm has been sounded at rising water levels in Rift Valley lakes, which have swallowed homes, utilities and displaced animals in parks.
The lake waters are extending at a high speed, worrying residents and scientists, who seem not to have sufficient explanation as rains have not fallen in huge volumes over the past few months.