Sanganois is a bottomland area with sloughs, backwater lakes, and timbered ponds.

[5] Sanganois contains bottomland timber with willow, maple, and cottonwood trees.

[5] When the floodplain lakes have deeper water levels, gulls, terns, and ducks make their home.

[5] Other birds that nest on the site include: brown creeper, lark sparrow, blue grosbeak, western meadowlark, Eurasian tree sparrow, Bewick's wren, and bald eagles.

[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.