By 2001, when the CSA released its Sample Agricultural Enumeration, these four zones had been combined into two, and Godere had been merged into the second administrative zone. By the 2007 census, Gambela had been redivided into three zones (named for the three largest ethnic groups), and the area around Itang town had been made a special woreda; borders of existing woredas were moved around to create several new ones within the zones. These zones are: Anywaa Zone Majang Zone Nuer Zone Itang (woreda) Nuer Zone is by far the largest of the zones of Gambela region and also includes the capital, Gambela. The terrain is mostly flat at elevations between 400 – 550 meters above sea level but with the eastern fringes of Anywaa Zone and in particular the easternmost zone, Majang, being partly in the highlands and going up to an elevation of ~2000 meters near the eastern border. Governors and chairmen of the ruling party Governor and chairman of the ruling party in Gambela region 1991–2018: Agwa Alemu (GPLM) 1991 – 1992 Okello Ouman (GPLM) 1992 – 1997 Okello Gnigelo (GPDF) August 1997 – 2003 Okello Akway 2003 – 2004 Keat Tuach Bithow (acting) January 2004 – 2005 Omod Obong (GPDM) 29 September 2005 – April 2013 Gatluak Tut Khot (GPDM) April 2013 – October 2018 Omud Ojulu Obub (Prosperity Party ) October 2018 – present (This list is based on information from Worldstatesmen.org.) References External links FDRE States: Basic Information - Gambella "Violence in Gambella: An Overview" on the site of Oxfam America. "The Current Situation in Gambella", Press Release from the Federal Democratic Republic of Ethiopia, Ministry of Federal Affairs Map of Gambela region at UN-OCHA Map of the Gambela region at the Disaster Prevention and Preparedness Agency (DPPA) of Ethiopia Further reading Fred Pierce, 'The Land Grabbers' Medhane Tadesse, "Gambella: The impact of local conflict on regional security" Institute for Security Studies website Human Rights Watch, "Targeting the Anuak: Human Rights Violations and Crimes Against Humanity in Ethiopia's Gambella Region" Regions of Ethiopia States and territories established in 1992