A total of 45 people are involved in the search for Emma Beattie, who has been missing since Friday evening.
The search for the missing Rangiora 20-year-old is continuing today after Beattie left her Fernside home at 11pm on Friday. She hasn't been seen or heard from since.
Sergeant Phil Simmonds said eight teams, including LandSAR volunteers and police officers, are currently searching the Ashley River area.
The search is concentrated on the Hillcrest Rd area of the river with 32 people searching for Beattie in the field, with an overall total of 45 involved in the search effort.
"Teams are focusing on buildings, properties and hedgerows in the area," Simmonds said.