Boasting one of the largest scales in Tohoku, Nagai Dam features the majestic Nagai Hyakushu Lake, offering breathtaking views, especially during the vibrant greenery of spring and the fiery colors of autumn.
Nagai Dam is a gravity concrete dam built on the Nogawa River in Nagai City, Yamagata Prefecture. Completed in 2011, it boasts a height of 125.5 meters, a length of 381 meters, and a total storage capacity of 51 million tons. The dam created Nagai Hyakushu Lake, a stunning reservoir surrounded by mountains. Nagai Dam serves multiple purposes, including flood control, irrigation, water supply, hydroelectric power generation, and maintaining the flow of the Nogawa River. Nagai Hyakushu Lake harmonizes beautifully with the surrounding nature, showcasing breathtaking scenery throughout the year. Spring brings a profusion of cherry blossoms, summer reveals lush green mountains reflected in the lake's surface, autumn paints the lake in shades of red and gold with its vibrant foliage, and winter offers a stunning snowscape. There is something beautiful to experience every season. Around Nagai Dam, you'll find various activities, including boat tours and amphibious bus rides on the lake. The Nagai Dam Management Office is located nearby, offering exhibitions and information about the dam. Nagai Dam is a fantastic sightseeing spot where nature and technology blend seamlessly. Be sure to visit!