Cheongpyeong Lake (Korean: 청평호) is a clear water artificial lake^[1] in Cheongpyeong, Gapyeong County, and Gyeonggi Province, Republic of Korea.^[2] It was created with the construction of Cheongpyeong Dam in 1944 to block the Bukhangang River.^[3] It is located 50 kilometers (30 miles) away from Seoul, South Korea, the capital of South Korea.^[4][5]

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The lake has an area of 12.5 square kilometres (4.8 sq mi), a full water area of 19 km² (7.3 sq mi), and a water storage capacity of 180 million tons. In 1977, it was designated as a marine protected area but this was lifted in November 1984.^[6]

The lake is surrounded by mountains. Near Cheongpyeong Lake is an amusement park^[7] as well as a number of summer homes. Nearby the lake there is water skiing and other recreational activities. Around Cheongpyeong Lake, there are approximately 30 boating areas for water skiing, motorboats, jet skis, banana boats, fly fishing, and other water activities.^[8] The tourist season is from July to August, accounting for 64.5% of annual footfall.^[9]