As of 2005, the Key Largo woodrat population was still struggling to survive among the half-built condominiums of the former Port Bougainville project, which in 2003 became part of the Dagny Johnson Key Largo Hammock Botanical State Park. of the developer's land were bought up by the Federal Deposit Insurance Corporation in 1987; the Botanical State Park now takes up . Besides in this area, the rat finds refuge in the Crocodile Lake National Wildlife Refuge, which has a captive breeding program currently in operation but increasing development continues to threaten the animal.