Deepwater Horizon MC252 response injury data from the Environmental Response Management Application (ERMA) containing freshwater impact areas and other related data collected for the DWH response between 2010-04-27 and 2010-09-15 in the Northern Gulf of Mexico (NCEI Accession 0163808)

This Archival Information Package (AIP) contains Environmental Response Management Application (ERMA) GIS layers that represent the delineation of the areas impacted with additional fresh water due to the opening of the diversions in 2011 as part of the Deepwater Horizon oil spill response. The exposure area in Blanche/Atchafalaya Bays (Moraganza-Vermilion) and Lake Borgne (Bonnet Carre) where the number of low salinity days was greater compared to the average historical low salinity days (2006-2009). Determinations of exposure were made based on modeled average daily salinities between April 27 and September 15, 2011, the period during which freshwater from the open diversions in 2011 would have reached the study area. These data were used as part of the Programmatic Damage Assessment and Restoration Plan (PDARP).