VICKSBURG —The updated National Wetland Plant List (NWPL) is now available, reports the U.S. Army Corps of Engineers, Vicksburg District.
The NWPL plays a critical role in wetland determinations under the Clean Water Act. Wetlands are evaluated using three parameters — soils, hydrology and vegetation. Using sampling protocols outlined in the Regional Supplements to the 1987 wetland delineation manual, the indicator status is then used to determine whether the vegetation parameter is met.
The 2012 NWPL should be used in any wetland delineations performed after June 1, 2012.
The notice can be viewed at www.mvk.usace.army.mil and clicking on the Permit Public Notices link on the left side of the page. The notice is listed under the title Availability of the Updated National Wetland Plant List.
The lead responsibility to update the 1988 plant list was transferred from the U.S. Fish and Wildlife Service (USFWS) to the Corps in December 2006. The 2012 NWPL is the culmination of six years of interagency processes to update the “1988 National List of Plant Species that Occur in Wetlands.” This national effort also has involved the other three federal agencies with legal responsibilities for wetlands: the U.S. Environmental Protection Agency, the USFWS and the Natural Resources Conservation Service. This update represents the most complex and thorough evaluation of wetland plant species ratings since the inception of the 1988 list, which allows for greater input across more professional institutions with increased public access to critical information, according to the Corps.
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