Studva
 The Studva (Croatian: Studva; Serbian: Studva or Студва) is a river in eastern Croatia and northern Serbia a 37 km-long right tributary to the Bosut river. It flows entirely within the Syrmia region of both Croatia and Serbia (Vojvodina).The Studva originates from the marshes of the western Syrmia in Croatia (Spačva sub-region) near the village of Gunja.