Harvey has been downgraded from a Category 4 hurricane to a tropical storm but its threat is still imminent.
The governor and mayor clashed before Hurricane Harvey made landfall Friday, with Abbott suggesting people in Houston might want to evacuate but Turner saying fleeing unnecessarily would clog highways for those leaving other communities facing bigger threats.
However, despite the massive 'unprecedented' flooding, Turner argued that he stands by his decision not to evacuate, saying that it would have led to a worse outcome.
Turner added in a press conference: 'If you think the situation right now is bad, you give an order to evacuate, you are creating a nightmare.
The destructive path of the hurricane began to take shape on Sunday, with a striking collection of aerial photographs laying bare its damage for the first time.
Highways lay submerged in water where abandoned cars bobbed alongside rescue boats taking residents to safety after 130mph winds and unprecedented floods swept through the southeast pocket of the state on Friday and Saturday.