Bay of Plenty region was formed in 1989 after a nationwide review and shakeup of top-level local government in New Zealand. The new region incorporated the former counties of Tauranga, Rotorua, Whakatane and Opotiki. On 5 October 2011, the MV Rena ran aground on the Astrolabe Reef in the bay causing a large oil spill, described as New Zealand's worst ever environmental disaster. The region is subdivided into territorial authorities, which include the Western Bay of Plenty District, Tauranga City, Whakatane District, Kawerau District and Opotiki District, as well as parts of Rotorua District and the town of Rangitaiki in Taupo District. The
Bay of Plenty Rugby Union has 38 local clubs under affiliated with them and three sub-unions to be part of. The Baywide competition runs for 20–21 weeks and split to four stages: The 38 clubs are split into three sub-unions, the Central, Eastern and Western Sub-Unions. There are ten clubs in the Central Bay of Plenty sub-union. There are 14 clubs in the Eastern Bay of Plenty sub-union. There are 13 clubs in the Western Bay of Plenty sub-union. Stage One runs for 6–7 weeks, clubs are put into their respective sub-unions and complete a local competition. 24 teams are put into 2 sections with