Grays Lake National Wildlife Refuge is a National Wildlife Refuge of the United States located Bonneville and Caribou counties in southeastern Idaho. It has the largest hardstem bulrush marsh in North America. Located in a high mountain valley near Soda Springs, the refuge and surrounding mountains offer scenic vistas, wildflowers, and fall foliage displays. Lands adjacent to the 19,400-acre (79 km²) refuge are primarily wet meadows and grasslands. The refuge provides breeding habitat for species of mammals including moose, elk, mule deer, muskrat, badger, and weasel.

The refuge has a surface area of 20,125.08 acres (81.4433 km²; 8,144.33 ha).^[2]

The refuge hosts a large nesting population of greater sandhill cranes; as many as 1200 individuals are counted in the valley during migration and staging times. The refuge is a birding destination, and a good area to view the rare trumpeter swans. This near-pristine montane wetland is being threatened by the same type of suburban/rural development that has so heavily impacted nearby Jackson Hole.

Idaho portal

 This article incorporates public domain material from websites or documents of the United States Fish and Wildlife Service.

• Profile of Grays Lake National Wildlife Refuge
• Refuge website