Long Lake National Wildlife Refuge is a protected wetland in south-central North Dakota established in 1932 by President Herbert Hoover as a migratory bird refuge. Encompassing 22,300 acres around Long Lake, a 15,000-acre saline basin, it includes a lake about 18 miles long that is generally shallow, usually 3 to 4 feet deep, though wetter periods can raise it to about 7 feet. Its broad shallow waters and winding shoreline create extensive habitat for migrating and nesting waterfowl, shorebirds, and occasional rare migrants. Recognized as a Globally Important Bird Area in 2001 and by the Western Hemisphere Shorebird Reserve Network, it remains a major stopover and breeding habitat.