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Nearshore bathymetry data from the Unalakleet River mouth, Alaska, 2019


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Snyder, A.G., Johnson, C.D., Gibbs, A.E., and Erikson, L.H., 2021, Nearshore bathymetry data from the Unalakleet River mouth, Alaska, 2019: U.S. Geological Survey data release,


This data release presents nearshore bathymetry data collected at the mouth of the Unalakleet River in Alaska, near the city of Unalakleet. The data were collected in August 2019 by the U.S. Geological Survey, Pacific Coastal and Marine Science Center. Nearshore bathymetry was measured along survey lines from the shore to a depth of approximately -7.4 m NAVD88 and in a portion of the estuary closest to the mouth. Bathymetry data were collected using small boat equipped with a single-beam sonar system and global navigation satellite system (GNSS) receiver. The sonar system consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9 degree beam. Depths from the seafloor to the echosounder were calculated [...]


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unk19_july_bathymetry.csv 74.76 MB text/csv


Data were collected to create a digital elevation model of the nearshore bathymetry for use in coastal flooding models. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify shallow-water bathymetric features.

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DOI doi:10.5066/P9238F8K

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