The River IJ is a significant waterway located in the Netherlands, specifically in the province of North Holland. It flows into the IJsselmeer, a large lake that was created by the construction of the Afsluitdijk dam. The river is an important part of the local ecosystem and serves as a navigable route for boats and ships. The River IJ runs through the city of Amsterdam, where it has played a crucial role in the city's development and trade. Along its banks, you can find various attractions, including parks and historical buildings, making it a popular spot for both locals and tourists.