“…Numerous studies address uncertainty in topographic DEMs (e.g., Bater and Coops, 2009;Goulden et al, 2016;Leon, Heuvelink, and Phinn, 2014;Spaete et al, 2011;Su and Bork, 2006) and uncertainty in bathymetric DEMs (e.g., Amante and Eakins, 2016;Calder, 2006;Elmore et al, 2012;Jakobsson, Calder, and Mayer, 2002), but there is currently a lack of research on deriving uncertainty surfaces for coastal DEMs developed from multiple bathymetric and topographic data sets of disparate quality and age. Jakobsson, Calder, and Mayer (2002) and Calder (2006) create uncertainty surfaces that reflect potential measurement uncertainty for bathymetric data sets from different time periods, and the interpolation uncertainty between sparse measurements.…”