Police National Dive Squad divers enter Lake Arapuni from Arapuni Landing as part of a grid search of waterways around the missing woman's home.
Arohena woman Kim Louise Richmond has now been missing for 11 days.
The 42-year-old left her Arohena farm in the early hours of Sunday, July 31, in her silver 2014 Ford Ranger utility, registration HKD553.
It is believed Richmond headed south from her Wharepapa South farm.
Police have had no reported sightings of her or her vehicle since.
On Tuesday and Wednesday the Police National Dive Squad searched Lake Arapuni and Lake Waipapa.
Three divers and two crew travelled from Wellington with their specialist equipment and conducted grid search dives at Bulmers and Arapuni landings, as well as shore search dives of both lakes.
Nothing was found.
Detective Senior Sergeant Ross Patterson of the Waikato West CIB met the Arohena community yesterday to update them of progress and answer questions.
He says locals want to help in any way they can to locate Richmond.
He says anyone who has any information should contact Detective Sergeant Paul Van Der Zee of the Te Awamutu CIB on 07 8720100 or anonymously contact Crimestoppers on 0800 555 111.
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