Tom Flood, the son of writer Dorothy Hewett, was born in Sydney and grew up in Western Australia. After attending university for a time, he worked at a variety of jobs, including wheat sampler, geologist's assistant, tuna fisherman, ore sample pulveriser, bus conductor and musician.
Turning to fiction-writing in 1985, Flood won the 1988 Australian/Vogel Award with his first novel Oceana Fine. Set in Western Australia's wheat-belt, the novel explores the violent family history of Rex Cleaver against the background of a sea of wheat and the lives of wheat men.
Since 1988 Flood has worked on a second novel, Septimus Grout: an extract from this work was published in Southerly, but as at 2016, the novel itself has not been published. He also published a number of short stories.