Already, Lake Victoria, which is shared by Kenya, Tanzania and Uganda, has hit the highest water levels in over 50 years, at 13.45 metres, causing widespread flooding in many areas.
Sweeping floods in western Uganda killed four people and displaced 5,000 as heavy rains continue to inundate the region, according to Ugandan police.
"In areas around Lake Naivasha, many people have been displaced, while Budalangi in Kenya has been affected by backflows from Lake Victoria and River Nzoia, which has burst its banks," said Mr Wamalwa.
Lindi and Coast regions were among the first parts of Tanzania hit by floods, with 21 deaths and 1,702 people displaced families early this year.
About 180 houses in Western Tanzania with 1,655 people were affected by flooding water from Lake Tanganyika, government authorities said.
