Sanganois is a bottomland area with sloughs, backwater lakes, and timbered ponds.[1] It is near the confluence of the Sangamon River and Illinois River.;[2][3] the original confluence of the meandering Sangamon River channel and the Illinois River is contained within the Sanganois Conservation Area.[4] The area is located in southwestern Mason County, northwestern Cass County, and a small portion in Schuyler County.[2]
The area was first owned and operated as private duck clubs. Sanganois Gun Club was the largest club with 2,700 acres (1,100 ha) was purchased by the State of Illinois in 1948.[2][5] The state has purchased additional acreage to expand over the years, including the new addition of Stewart Lake.[6][7][8] Today the Sanganois State Fish and Wildlife Area contains over 10,000 acres (4,000 ha), of which roughly 1,700 acres (690 ha) is water.[5]
There are approximately 60 waterfowl blind sites, 7,000 acres (2,800 ha) huntable acres, and approximately 500 acres (200 ha) that are open to walk-in hunting.[1][9][11] Youth hunting events are available during hunting season.[12]
Visitors are encouraged to check in to ensure the site is open to access and to avoid this site during waterfowl and deer hunting seasons,[13][3] but birders may hike an unpaved road around Knapps Island or the levee.[3]