Union Slough National Wildlife Refuge is a 2,200-acre refuge located in Kossuth County, Iowa. The refuge was established in 1938 to provide a breeding ground and refuge for waterfowl and other migratory birds. The slough is all that remains of a pre-glacial riverbed, and its name is derived from the connection of two watersheds: the Blue Earth River of Minnesota and the East Fork of the Des Moines River.

The terrain at Union Slough is nearly flat, allowing the flow of the water to be determined by the direction of the wind. The refuge is home to a variety of plant and animal life, including waterfowl, shorebirds, raptors, songbirds, mammals, reptiles, amphibians, and fish.

Visitors to Union Slough can enjoy a variety of activities, including hiking, birdwatching, fishing, and hunting. The refuge also has a visitor center with exhibits on the history and natural resources of the area.

Here are some tips for visiting Union Slough National Wildlife Refuge:

• The best time to visit the refuge is during the spring and fall migrations, when the waterfowl and other migratory birds are passing through.
• Be sure to wear comfortable shoes, as you will be doing a lot of walking.
• Bring binoculars and a camera to capture the sights and sounds of the refuge.
• Respect the wildlife and their habitat.
• Leave no trace of your visit.

Union Slough National Wildlife Refuge is a beautiful and unique place to visit. It is a great place to learn about the natural history of Iowa and to see a variety of wildlife. If you are looking for a place to relax and enjoy the outdoors, Union Slough is the perfect place for you.