 Yangon's four main passenger jetties, all located on or near downtown waterfront, mainly serve local ferries across the river to Dala and Thanlyin, and regional ferries to the Irrawaddy delta.The 22-mile (35 km) Twante Canal was the quickest route from Yangon to the Irrawaddy delta until the 1990s when roads between Yangon and the Irrawaddy Division became usable year-round.While passenger ferries to the delta are still used, those to Upper Burma via the Irrawaddy river are now limited mostly to tourist river cruises.