Static flood-inundation boundary extents were created for Lake Champlain in Franklin, Chittenden, Addison, Rutland, and Grand Isle Counties in Vermont and Clinton, Essex, and Washington Counties in New York by using recently acquired (2009, 2012, 2014, and 2015) light detection and ranging (lidar) data. The corresponding flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science website at http://water.usgs.gov/osw/flood_inundation/, depict estimates of the areal extent of flooding corresponding to selected water level elevations (stages) at the USGS lake gage on the Richelieu River (Lake Champlain) at Rouses Point, N.Y. (station number 04295000). In this study, wind and seiche effects (standing oscillating wave with a long wavelength) were not represented; therefore, the flood-inundation maps reflect 11 stages for Lake Champlain that are static for the entire area of the lake. This data release is a package of flood-inundation data for Lake Champlain including 1) eleven shapefiles of contour lines showing elevations; 2) eleven shapefiles showing estimated flood extents as polygons; and 3) eleven raster data sets showing the depth of the water at 11 flood stages. These data sets demonstrate the estimated extent and depth of flooding at specific water levels between 100 and 106 feet (National Geodetic Vertical Datum of 1929). The contour line shapefiles were developed from digital elevation models (DEMs) derived from the lidar to represent those 11 flood stages for the approximately 100-mile length (and 600-mile shoreline) of Lake Champlain. The polygon shapefiles were created from the contour lines and represent the estimated areal extent for the 11 flood elevations. The raster files depict the depth, in meters (referenced to the North American Vertical Datum of 1988), of the water in the inundated areas along the shoreline of Lake Champlain during the 11 theoretical flood stages. The depth grids were created by subtracting the digital elevation model (DEM) values (in meters) from each of 11 raster files representing the flood extent at each constant water level (in meters). The breaklines from the original lidar data were used to clip and remove areas over the lake and its tributaries, so the depth grids show the water depths only for inundated areas. Because the elevations in the lidar and DEM data were represented in meters, the depth grids are also in meters, but the contour lines and extent polygons give the water depths in feet (relative to the North American Vertical Datum of 1988). Grid number = Feet (NGVD29) = Feet (NAVD88) = Meters (NAVD88) 1 = 100 = 99.57 = 30.35 2 = 101 = 100.57 = 30.65 3 = 101.5 = 101.07 = 30.81 4 = 102 = 101.57 = 30.96 5 = 102.5 = 102.07 = 31.11 6 = 103 = 102.57 = 31.26 7 = 103.2 = 102.77 = 31.32 8 = 103.5 = 103.07 = 31.42 9 = 104 = 103.57 = 31.57 10 = 105 = 104.57 = 31.87 11 = 106 = 105.57 = 32.18