Combined high-resolution LIDAR topography and multibeam bathymetry for northern Resurrection Bay, Seward, Alaska

We created a new Digital Elevation Model using the best available high-resolution topography and multibeam bathymetry surrounding the area of Seward, Alaska. Datasets of (1) LIDAR topography collected for the Kenai Watershed Forum, (2) Seward harbor soundings from the Army Corp of Engineers, (3) and NOAA multibeam bathymetry contributed to the final merged product. These datasets were placed into a common coordinate system, horizontal datum, vertical datum, and data format prior to being merged together. The projected coordinate system of Universal Transverse Mercator Zone 6 North American Datum of 1927 was used for the horizontal coordinates. Z-values in meters were referenced to the tidal datum of Mean High Water. Gaps between the datasets were interpolated to create the final seamless five-meter grid covering the area of interest around Seward, Alaska.