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 Steamers Bay of Plenty has also challenged many times for the Ranfurly Shield. In 2004 Bay of Plenty won the Ranfurly Shield over Auckland 33–28 at Eden Park to win it for the first time. They would defend it against Waikato 26–20 at Mt Maunganui before losing it two weeks later to Canterbury 26–33. A year later Bay of Plenty would challenge Canterbury in Christchurch, however Bay of Plenty lost 13–40. The last time Bay of Plenty challenged for the Ranfurly Shield was on 19 September 2015, resulting in a narrow 23–17 defeat to Hawke's Bay. Bay of Plenty also has