Spring Lake State Fish and Wildlife Area is an Illinois state park on 2,032 acres (822 ha) in Tazewell County, Illinois, United States. The state park is centered on Spring Lake, an 8.5-mile (13.7 km) long alluvial lake that lies parallel to the Illinois River. The lakebed lies by the foot of the river's sandstone bluff in an abandoned bed of the river. It is a shallow lake that is no more than 10 feet (3.0 m) deep. The nearest major town is Manito, Illinois.