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Model parameter input files to study three-dimensional flow over coral reef spur-and-groove morphology This data set consists of physics-based Delft3D-FLOW and SWAN hydrodynamic models input files used to study the wave-induced 3D flow over spur-and-groove (SAG) formations. SAG are a common and impressive characteristic of coral reefs. They are composed of a series of submerged shore-normal coral ridges (spurs) separated by shore-normal patches of sediment (grooves) on the fore reef of coral reef environments. Although their existence and geometrical properties are well documented, the literature concerning the hydrodynamics around them is sparse. Here, the three-dimensional flow patterns over SAG formations, and a sensitivity of those patterns to waves, currents, and SAG geometry were examined. Shore-normal shoaling... Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Geomorphology, Marine Geology, PCMSC, All tags... Pacific Coastal and Marine Science Center, U.S. Geological Survey, USGS, coastal processes, coastal processes, coral reefs, geoscientificInformation, hazards, numerical modeling, oceans, reef, water circulation, water column features, waves, Fewer tags Model parameter input files to compare wave-averaged versus wave-resolving XBeach coastal flooding models for coral reef-lined coasts This data release includes the XBeach input data files used to evaluate the importance of explicitly modeling sea-swell waves for runup. This was examined using a 2D XBeach short wave-averaged (surfbeat, XB-SB) and a wave-resolving (non-hydrostatic, XB-NH) model of Roi-Namur Island on Kwajalein Atoll in the Republic of Marshall Islands. Results show that explicitly modelling the sea-swell component (using XB-NH) provides a better approximation of the observed runup than XB-SB (which only models the time-variation of the sea-swell wave height), despite good model performance of both models on reef flat water levels and wave heights. However, both models under-predict runup peaks. The difference between XB-SB and... Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Kwajalein Atoll, Marine Geology, PCMSC, All tags... Pacific Coastal and Marine Science Center, Republic of the Marshall Islands, Roi-Namur, U.S. Geological Survey, USGS, coastal processes, coastal processes, coral reefs, flooding, geoscientificInformation, hazards, numerical modeling, oceans, reef, water column features, water level, waves, Fewer tags