The Peace–Athabasca Delta, located in northeast Alberta, is the largest freshwater inland river delta in North America. It is located partially within the southeast corner of Wood Buffalo National Park, Canada's largest national park, and also spreads into the Regional Municipality of Wood Buffalo, west and south of the historical community of Fort Chipewyan. The delta encompasses approximately 321,200 ha (794,000 acres), formed where the Peace and Athabasca rivers converge on the Slave River and Lake Athabasca. The delta region is designated a wetland of international importance and a UNESCO World Heritage Site. The region is large enough that it is considered one of twenty distinct natural subregions of Alberta by the provincial government's Natural Regions Committee.