The term hydrological apex refers to a triple divide considered the dominant one of a whole continent, because its waters flow into three different oceans. Triple Divide Peak in Montana is considered the triple divide hydrological apex of North America, though Snow Dome on the Alberta-British Columbia border also has a claim depending on how the Arctic and Atlantic oceans are defined. North America is the only continent, excluding the Antarctica ice fields, that has a triple point dividing basins draining into three different oceans.