Main rivers: The Tym, long and navigable by rafts and light boats for , flows north and northeast with numerous rapids and shallows, and enters the Sea of Okhotsk.Тымь – an article in the Great Soviet Encyclopedia. (In Russian, retrieved 21 June 2020.) The Poronay flows south-southeast to the Gulf of Patience or Shichiro Bay, on the southeastern coast. Three other small streams enter the wide semicircular Aniva Bay or Higashifushimi Bay at the southern extremity of the island.
main rivers the tym long and navigable by rafts and light boats for  flows north and northeast with numerous rapids and shallows and enters the sea of okhotskтымь – an article in the great soviet encyclopedia (in russian retrieved 21 june 2020) the poronay flows south-southeast to the gulf of patience or shichiro bay on the southeastern coast three other small streams enter the wide semicircular aniva bay or higashifushimi bay at the southern extremity of the island