Ookapu marae is located on the inner reaches of the Aotea Harbour, 8 km north of Kaawhia township and close to Matakowhai Bay. The primary hapuu for this marae are Ngaati Te Wehi and Ngaati Mahuta.

The whare tupuna is called Te Kotahitanga o Ngaati Te Wehi.  Ookapu marae connects ancestrally to the Tainui waka, the maunga Karioi, the moana Aotea and the awa Waikato.