 In November 2004, the Sihcao Wildlife Refuge (四草野生動物保護區) was created to further protect the area, especially from possible encroachment from the nearby Tainan Technology Industrial Park.On 10 December 2007, the Sihcao Wetlands, along with the Zengwun Estuary Wetland (曾文溪口濕地) were listed as international wetlands under the Ramsar Convention.In 2009, the Sihcao Wetlands became part of the Taijiang National Park.