Sihwa Lake is an artificial lake located in Gyeonggi Province, South Korea. It was created in 1994 by constructing a tidal power dam, which helps control water levels and generate electricity. The lake covers an area of approximately 47 square kilometers and is known for its unique ecosystem and scenic beauty. The lake is surrounded by various recreational facilities, making it a popular destination for both locals and tourists. Activities such as cycling, walking, and birdwatching are common, as the area is home to diverse wildlife. Additionally, Sihwa Lake plays a crucial role in flood control and water management in the region.