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 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.