It is to be expected. No intersecting tectonic plates with landmass = no mountains = no rivers. The biggest rivers come from mountain ranges that sit on huge i

It is to be expected. No intersecting tectonic plates with landmass = no mountains = no rivers. The biggest rivers come from mountain ranges that sit on huge inter-continental plates. large Indian and Chinese rivers come from the Himalayas on the Indian plate. The south American rivers from the Andes and the South American plate; and the Congo from the tall-great-lakes that sit on the African plate.