Mekong delta, which yields enough rice to feed the country with a sizable surplus, was formed by sediment deposited by the Mekong. The process continues today, with silt deposits extending the shoreline by as much as 80m per year. The river is so large that it has two daily tides. Lush with rice paddies and fish farms, this delta plain also nourishes the cultivation of sugarcane, fruit, coconut and shrimp. Although the area is primarily rural, it is one of the most densely populated regions in Vietnam and nearly every hectare is intensively farmed.