The U.S. Fish and Wildlife Service provides expenditure data reports each year in 59 pages of dense PDFs. We extracted the 2019 Annual Lands Report data and make this information readily available. (Data from the U.S. Fish and Wildlife Service, as of 9/30/2019).
National Wildlife Refuges (NWRs) include the Refuge System lands, waters, and interests administered by Fish and Wildlife Service as wildlife refuges, wildlife ranges, wildlife monument areas, game preserves, and conservation areas.