Bao Bolong (also Baobolong, Bao Bolon or Baobolon) Wetland Reserve is a national park in The Gambia. Established in 1996 it covers 220 square kilometres. The Wetland Reserve is located on the north bank of the River Gambia, approximately 100 km (52 nautical miles) from the river mouth. The name is derived from the Bao Bolon tributary that rises in Senegal and enters the River Gambia. It extends from the River Gambia north to the Senegalese border along the Baobolon tributary.