Little Grassy Lake (Illinois)

Little Grassy Lake
Little Grassy Lake Show map of Illinois Little Grassy Lake Show map of the United States
Location	Jackson County, Illinois and Williamson County, Illinois
Coordinates	37°38′12″N 89°08′44″W / 37.6368°N 89.1455°W / 37.6368; -89.1455
Type	reservoir
Primary inflows	Little Grassy Creek
Primary outflows	Little Grassy Creek
Basin countries	United States
Max. length	4 mi (6.4 km)
Max. width	0.5 mi (0.80 km)
Surface area	1,200 acres (490 ha)
Shore length1	36 mi (58 km)
Surface elevation	499 ft (152 m) [1]
1 Shore length is not a well-defined measure.

Little Grassy Lake is a 1,200 acres (490 ha) reservoir in southern Illinois, created by the damming of Little Grassy Creek, a tributary of Crab Orchard Lake and the Big Muddy River. Most of the lake is located in Williamson County, southeast of Carbondale, Illinois. The lake is accessible from Giant City Road out of Carbondale, Illinois. Two arms of the lake penetrate into adjacent Jackson County. The lake is managed by the U.S. Fish and Wildlife Service as part of the Crab Orchard National Wildlife Refuge.