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Open-File Report 2010–1035

Prepared in cooperation with the U.S. Army Corps of Engineers

Geophysical Data Collected from the St. Clair River between Michigan and Ontario, Canada (2008-016-FA)

By Jane F. Denny, D.S. Foster, C.R. Worley, and Barry J. Irwin

ABSTRACT

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In 2008, the U.S. Geological Survey (USGS), Woods Hole Coastal and Marine Science Center (WHCMSC), in cooperation with the U.S. Army Corps of Engineers conducted a geophysical and sampling survey of the riverbed of the Upper St. Clair River between Port Huron, Mich., and Sarnia, Ontario, Canada. The objectives were to define the Quaternary geologic framework of the riverbed of the St. Clair River to evaluate the relationship between morphologic change of the riverbed and underlying stratigraphy. This report presents the geophysical and sample data collected from the St. Clair River, May 29–June 6, 2008, as part of the International Upper Great Lakes Study, a 5-year project funded by the International Joint Commission of the United States and Canada to examine whether physical changes in the St. Clair River are affecting water levels within upper Great Lakes, to assess regulation plans for outflows from Lake Superior, and to examine the potential effect of climate change on the Great Lakes water levels (http://www.iugls.org). This document makes available the data that were used in a separate report, U.S. Geological Survey Open-File Report 2009–1137, which detailed the interpretations of the Quaternary geologic framework of the region. This report includes a description of the high-resolution acoustic and sediment-sampling systems that were used to map the morphology, surficial sediment distribution, and underlying geology of the Upper St. Clair River during USGS field activity 2008–016–FA (http://quashnet.er.usgs.gov/cgi-bin/datasource/public_ds_info.pl?fa=2008-016-FA). Video and photographs of the riverbed were also collected and are included in this data release. Future analyses will be focused on substrate erosion and its effects on river-channel morphology and geometry. Ultimately, the International Upper Great Lakes Study will attempt to determine where physical changes in the St. Clair River affect water flow and, subsequently, water levels in the Upper Great Lakes.

First posted April 2011

For additional information contact:
Director
U.S. Geological Survey
Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Quissett Campus
Woods Hole, MA 02543
(508)548-8700

http://woodshole.er.usgs.gov/

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Suggested citation:

Denny, J.F., Foster, D.S., Worley, C.R., and Irwin, B.J., 2011, Geophysical data collected from the St. Clair River between Michigan and Ontario, Canada (2008-016-FA): U.S. Geological Survey Open-File Report 2010–1035, 16 p., at http://pubs.usgs.gov/of/2010/1035/.



Contents

Abstract

Introduction

Data Acquisition and Processing

St. Clair River Field Program

Swath Bathymetry and Acoustic Backscatter

Subbottom Profiling

Video and Photography

Sediment Samples

Data Catalog

Acknowledgements

References Cited


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