The Savanna District includes a mosaic of upland and bottomland habitats. The uplands include hardwood forests, grasslands, and agricultural fields. The bottomlands include islands, peninsulas, and shoreline with over 29,000 acres of forests that flood annually. There are five wetland management units totaling over 11,000 acres. Wildlife is abundant with wetland dependent species being the primary management concern.
Birds are the most prevalent observable wildlife available.
Hundreds of thousands of waterfowl provide spectacular migrational viewing with annual fall, winter, and spring stopovers. Shorebirds and wading birds can be seen daily in the spring, summer, and fall stalking prey along the shoreline and in the shallow backwaters. The Mississippi River corridor also provides unique habitat for the spring and fall migrations of many species of neotropical migrant songbirds. There are two federally listed and twenty-three state listed endangered and threatened species that can be found on the District. All the Upper Mississippi River National Wildlife and Fish Refuge pages are formatted for Mosasic defaults.