Police say nothing of interest was found in the renewed search for Kathleen Lidden.
The missing mother of five was last seen on June 13 and police renewed their search on Tuesday.
The search wrapped up on Thursday afternoon and involved SES volunteers, Police Aviation Support Branch and The Hume Local Area Command personnel.
The focus of the search was on areas of bushland near Lake Alexander and the Nattai River that were not previously accessed by foot in earlier search operations.
On Thursday morning Chief inspector Jason Horne said police would look into further searches.
“After we wrap up [this search] we will look at spots we can search over the next few weeks,” he said.
Inspector Horne said police were still appealing to the public for information about Mrs Lidden.
Kathleen Lidden was last seen wearing a white scarf, yellow/cream coloured fleece jumper, grey track pants and carrying a brown bag.
Anyone who has seen Kathleen Lidden, or who has information about her whereabouts that could assist police, should contact Bowral Police Station on 4862 9299 or Crime Stoppers on 1800 333 000 or https://nsw.crimestoppers.com.au/.
Kathleen Lidden’s disappearance is considered to be out of character for her and grave concerns are being held for her welfare.