The Nashville District U.S. Army Corps of Engineers welcomes you to Martins Fork Lake. The lake is located at river mile 15.6 on the Martins Fork of the Cumberland River in the scenic mountainous terrain of Harlan County, 13 miles southeast of the town of Harlan, Kentucky. Martins Fork Lake provides a variety of outdoor recreation opportunities including: fishing, hunting, picnicking, camping, sunbathing, hiking, and boating for thousands of visitors each year.