The reserves will add 3,600 hectares to Western Australia's conservation estate, located in the shires of Cranbrook and Manjimup.
This area hosts a wealth of native animals including threatened species like numbats, woylies, western ringtail possum, chuditch and black cockatoos.
The new reserves will play an important role in the conservation of native species in the area, linking the Tone-Perup and Unicup nature reserves.
Today also marks the anniversary of the McGowan Government's historic announcement that it will be banning native forest logging in the South-West from 2024.
The Department of Biodiversity, Conservation and Attractions is finalising the draft Forest Management Plan 2024-2033, which is now open for public comment.