Multiple point erosion values and fetch values at 21 stations in Barataria Bay, Louisiana, determined using aerial images from 1998-01-23 to 2018-08-12

The degree to which Hurricane Katrina altered baseline rates of erosion prior to the Deepwater Horizon (DWH) oil spill was determined through the quantification of erosion rate and fetch in northern Barataria Bay, Louisiana. Aerial images were used to classify marsh shorelines as a reference, moderately-oiled and heavily oiled. Three pre-spill time periods (1998-2004, prior to Hurricane Katrina; 2004-2005, during Katrina; 2005-2010, post-Katrina but pre-oil spill) and a post-spill period from 2010-2018 were examined. Twenty-one shoreline sampling stations, each ~30 m^2 in area, were established within an approximate 8 km-by-5 km area in Wilkinson Bay and Bay Jimmy in northern Barataria Bay, Louisiana, USA (between coordinates 29.44060°–29.47459°N, 89.88492°– 89.94647°W). This dataset contains triplicate estimates of the distance from measurement station to the marsh platform edge and estimates of the fetch, or over-water distance between measurement station and the nearest landmass.