Watervliet is a city in Berrien County in the U.S. state of Michigan. Located in the northeastern part of the county, the population was 1,669 at the 2020 census. Mostly a rural farming community. The city is surrounded by Watervliet Charter Township but is administered autonomously. “Watervliet” means “flowing water” in Dutch, coming from “water” and “vliet” "Vliet" is a Dutch word for a minor streaming water, though it may refer to a city canal or a river that connects such flows.