From the website:
Lake Ilo National Wildlife Refuge is one of over 560 refuges and 38 wetland management districts in the National Wildlife Refuge System-a network of lands set aside specifically for wildlife. Managed by the U.S. Fish and Wildlife Service, the Refuge System is a living heritage, preserving wildlife and habitat for people today and for generations to come. Lake Ilo National Wildlife Refuge was established in 1939 by Franklin D. Roosevelt as a breeding ground for migratory birds and other wildlife. The Refuge provides fish and wildlife-oriented recreational opportunities, conserves endangered species, and protects cultural and natural resources.