Herrington Lake is a 2,335-acre (9 km²) artificial lake located in Mercer, Garrard and Boyle counties in Kentucky, United States. The lake was created by Kentucky Utilities' damming of the Dix River, a tributary of the Kentucky River, in 1925 to generate hydroelectric power. With a maximum depth of 249 feet (76 m), Herrington Lake is the deepest lake in Kentucky.