The Regional Municipality of Wood Buffalo (abbreviated RMWB) is a specialized municipality in northeast Alberta, Canada. It is the second largest municipality in Alberta by area and is home to oil sand deposits known as the Athabasca oil sands. History The Municipality of Wood Buffalo was incorporated as a specialized municipality on April 1, 1995 as a result of the amalgamation of the City of Fort McMurray and Improvement District No. 143. Specialized municipality status was granted to provide "for the unique needs of a municipality including a large urban centre and a large rural territory with a small population." The Municipality of Wood Buffalo subsequently changed its name to the Regional Municipality of Wood Buffalo on August 14, 1996. June 2013 floods By June 12, 2013, after many days of heavy rain, the Regional Municipality of Wood Buffalo declared a state of emergency. They organized evacuations from some areas and placed others under boil water advisories as local waterways, such as the Hangingstone River, rose to dangerously elevated levels south of Fort McMurray, causing the closure of Highway 63. 2016 wildfire From May 3, 2016 on, over 80,000 people were affected by evacuations, by May 3 at 6:49 pm, the entirety of Fort McMurray and surrounding areas were placed under a mandatory evacuation. making it Alberta's largest evacuation for a wildfire. Geography The Regional Municipality (RM) of Wood Buffalo is in the northeast corner of the province of Alberta. It borders the province of Saskatchewan to the east; the Northwest Territories to the north; Improvement District No. 24 (Wood Buffalo National Park), Mackenzie County, and the Municipal District of Opportunity No. 17 to the west; and Athabasca County and the Municipal District of Bonnyville No. 87 to the south. The Athabasca River meanders northward through the central portion of the RM of Wood Buffalo before emptying into Lake Athabasca. Some of its water bodies include Christina Lake, Gardiner Lakes, Garson Lake, Gipsy Lake, Gordon Lake, Gregoire Lake, McClelland Lake, Namur Lake, Richardson Lake, and Winefred Lake (also partially within Lac La Biche County and the Municipal District of Bonnyville No. 87). Discharging northward from Lake Athabasca is Riviere des Rochers, which at its confluence with the Peace River becomes the Slave River. The Slave River forms much of the RM of Wood Buffalo's boundary with Improvement District No. 24 north of the confluence. Land formations include the Birch Mountains