The mother of three children who drowned when their car plunged into a lake in April has been charged with their murder.

Akon Guode​, 36, was charged with the murder of 16 month-old Bol and four-year-old twins Hanger and Madit​ at an out-of-sessions court hearing on Monday.

The three children died when the car she was driving crashed into Lake Gladman in Wyndham Vale on April 8.

She was also charged with the attempted murder of her six-year-old girl Aluel, who was in the car as well but survived the crash.