A 19-year-old woman has died in a weekend boating accident at Deniliquin in the state's southwest.
About 2.30pm on Sunday, emergency services were called to the Edward River near Deniliquin, following reports a boat had struck a partially submerged tree in the river.
Police say the woman and a 29-year-old man were in a four metre flat-bottomed fishing boat when it hit the tree, knocking them both unconscious.
A short time later, the man regained consciousness and managed to gain the attention of nearby residents, who contacted police.
Residents and a fisherman began CPR on the woman until the arrival of first responders but she was pronounced dead at the scene.
The man was taken to Deniliquin hospital for mandatory testing and treatment for head injuries.
A crime scene was established, and the boat seized for forensic examination.