Hardy Lake, originally named Quick Creek Reservoir, is an Indiana state reservoir in Scott and Jefferson counties, Indiana. It is located four miles (6 km) east of Austin, Indiana and 35 miles (56 km) north of Louisville, Kentucky. It is the smallest reservoir maintained by the state of Indiana, measuring 2,448 acres (9.9 km²) of total property, and 741 acres (3.0 km²) of surface area for the lake.