Lake Taylorville is a 1,200-acre (4.8 km²) reservoir located in Christian County, Illinois. Created in 1962 by damming the South Fork of Illinois's Sangamon River, it was built for water supply and recreation purposes. The lake is 6.5 miles (10.5 km) long and 0.4 miles (0.6 km) wide. The nearest town is Taylorville, Illinois, southeast of Springfield, Illinois.