This dataset (in ESRI file geodatabase format) contains inundation areas for various future scenarios of sea-level rise (SLR), groundwater rise, and storm waves at Midway Atoll in the Northwestern Hawaiian Islands. Four types of inundation scenarios are considered: (1) passive SLR, (2) passive SLR including groundwater rise, (3) wave-driven inundation during storm events, and (4) wave-driven inundation during storm events including groundwater rise. For each of these four scenarios, five different levels of SLR are considered: 0.00 m, +0.50 m, +1.00 m, +1.50 m, and +2.00 m. We considered each scenario at mean high water in order to predict inundation during the more damaging part of the tidal range. Each of the above types of inundation have their own feature dataset within the geodatabase, named as follows: (1) Passive, (2) PassiveGW, (3) WaveDriven, and (4) WaveDrivenGW. Each of these feature datasets contains five feature classes labeled in a manner that indicates the SLR scenario under consideration. For instance, within the dataset "Passive", there are five feature classes: Passive_SLR_00cm, Passive_SLR_50cm, Passive_SLR_100cm, Passive_SLR_150cm, and Passive_SLR_200cm. Thus in total there are 20 feature classes (5 for each type of inundation scenario considered). A more detailed description of the data and the methodology behind it can be found in the larger work citation: Will the Effects of Sea-Level Rise Create Ecological Traps for Pacific Island Seabirds? 2015. PLoS ONE 10(9): e0136773.