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Data Series 374

Combined High-Resolution LIDAR Topography and Multibeam Bathymetry for Northern Resurrection Bay, Seward, Alaska

By Keith A. Labay and Peter J. Haeussler

Color shaded relief image of combined DEM.
Color shaded relief image of combined DEM.

Abstract

A new Digital Elevation Model was created 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 U.S. Army Corp of Engineers, and (3) multibeam bathymetry from the National Oceanic and Atmospheric Administration contributed to the final combined product. These datasets were placed into a common coordinate system, horizontal datum, vertical datum, and data format prior to being combined. 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 5-meter grid covering the area of interest around Seward, Alaska.

Contents

Abstract
Introduction
Data Sources and Processing
Combined Dataset
Summary
References Cited

Data Sets


File Name Description Metadata
sewardds_dem.zip (10.8 MB) Combined DEM in ARC/INFO grid format Text (20 KB), HTML (28 KB), FAQ (24 KB)
sewards_xyz.zip (23.3 MB) Combined DEM in XYZ format Text (20 KB), HTML (28 KB), FAQ (24 KB)
sewardds_geotiff.zip (11.6 MB) Combined DEM in GeoTIFF format Text (20 KB), HTML (28 KB), FAQ (24 KB)

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Send questions or comments about this report to the author, K.A. Labay, (907) 786-7410.

For more information about USGS activities in Alaska, visit the USGS Alaska Science Center home page.

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