More dead fish are turning up in the Darling River at Menindee, about 10 days after a mass die-off in the far-western NSW region killed off as many as one million fish.

Graeme McCrabb, a resident in Menindee, told the Herald on Thursday that new dead Murray Cod were surfacing near weir 32, not far from the town.

Locals watch on as more dead and dying fish surface in the Darling River near Menindee on Thursday. Credit:Graeme McCrabb

"I'd been watching [one section of the river] for several days," he said. "The fish hadn't been doing very well."

On Thursday morning, fish were dying as locals watched on.