Lake Chelan Dam officially known as the Lake Chelan Hydroelectric Project is located approximately 32 miles (51 km) north of the city of Wenatchee in Chelan County, near the geographic center of Washington state. The dam is located at the lower or southeasterly end of 55 mile (89 km) long Lake Chelan, adjacent to the city of Chelan. The powerhouse is located near the community of Chelan Falls. The reservoir has 677,400 acre feet (835,000,000 m³) of usable water storage. The 10-year average generation for the Project is 365,000 megawatt hours.