Water Resources of Michigan

Contents of an An Acoustic Doppler Current Profiler Survey of Flow Velocities in Detroit River, a Connecting Channel of the Great Lakes

US Geological Survey Open-File Report 03-219
Lansing, Michigan 2003

By: David J. Holtschlag and John A. Koschik

Accessible Web version is available in Web (HTML) format at:
http://mi.water.usgs.gov/pubs/OF/OF03-219/OF03-219LW.php

Contents

• Abstract
• Introduction
  • Purpose and Scope
  • Study Area
  • Acknowledgements
• Survey Methods
  • Principal of Aacoustic Doppler Current Profiler Operation
  • Field Data Collection
  • Survey Equipment and Techniques
  • Data Acquisition
  • Data Processing
• Survey Results
  • Comparison of USACE and USGS Data
  • Data Description
  • Data Retrieval
• Summary
• References Cited

FIGURES

• Figure 1. Map showing the St. Clair-Detroit River Waterway and surrounding area.
• Figure 2. Picture showing ADCP equipment being deployed from the USACE survey vessel.
• Figure 3. Picture showing ADCP on detachable swing mount used on the USACE survey vessel.
• Figure 4. Channel cross section schematic showing areas where flow velocities are measured and unmeasured.
• Figure 5. Map showing the Detroit River study area.
• Figure 6. Graph showing measured water levels and estimated flows on Detroit River during the ADCP survey.
• Figure 7. Graph showing wind conditions during the ADCP survey of Detroit River as indicated by NOAA weather station LSCM4 on Lake St. Clair.
• Figure 8. Picture showing pontoon-mounted ADCP tethered to the USGS survey boat.
• Figure 9. Boxplot showing distribution of average distances between velocity profiles for the July 2002 ADCP survey of Detroit River.
• Figure 10. Graph showing vertically averaged velocity profiles at Detroit River transect DR24.USACEu.
• Figure 11. Graph showing variation of velocity components with depth at Detroit River transect DR24.USACEu at velocity profile 8,252.
• Figure 12. Graph showing variation of velocity magnitude with depth along Detroit River transect DR24.USACEu.
• Figure 13. Image showing Detroit River reach where both USACE and USGS conducted ADCP surveys in July 2002.
• Figure 14. Graph showing measured flow component from USACE and USGS surveys on Detroit River in July 2002.
• Figure 15. Graph showing distribution of velocity magnitudes measured by the USACE on July 10, 2002, and by the USGS on July 19, 2002.
• Figure 16. Graph showing distribution of velocity azimuths measured by the USACE on July 10, 2002, and by the USGS on July 19, 2002.
• Figure 17. Graph showing distribution of pitch measurements from ADCP surveys by the USACE on July 10, 2002, and by the USGS on July 19, 2002 for selected transects of Detroit River.
• Figure 18. Graph showing distribution of roll measurements by the USACE on July 10, 2002, and by the USGS on July 19, 2002, for selected transects of Detroit River.
• Figure 19. Graph showing comparison of measured flow components in transects started near the left bank and right banks by USACE and USGS crews.
• Figure 20. Index map for accessing Detroit River ADCP data from the internet.

Tables

• Table 1. Prefixes of Detroit River cross-section identifiers used in the July 2002 ADCP survey.
• Table 2. Annotated excerpt of an ASCII output formatted by WinRiver Software.
• Table 3. Data attributes of acoustic Doppler current profiler data files revised to a column-oriented format.

• Appendix A. Summary of transect measurement data for the July 2002 ADCP survey of Detroit River.
• Appendix B. Configuration files typical of those used by USACE and USGS in the July 2002 ADCP survey of Detroit River
  Appendix C. Summary of transect locations and adjustments for the July 2002 ADCP survey of Detroit River.
• Appendix D. Annotated excerpt from an acoustic Doppler current profiler data table that can be retrieved through the internet.

Conversion factors and datums

Citation:

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