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Publications—Open-File Report 2006-1159

Velocity, Bathymetry, and Transverse Mixing Characteristics of the Ohio River Upstream from Cincinnati, Ohio, October 2004—March 2006

By G. F. Koltun, Chad J. Ostheimer, and Michael S. Griffin

In cooperation with the Greater Cincinnati Waterworks, Northern Kentucky Water District, and the Awwa Research Foundation

Contents

Abstract

Introduction

Description of the Study Area

Purpose and Scope

Velocity

Acoustic Doppler Current Profiler (ADCP) Measurements

Postprocessing of ADCP Data

Bathymetry

Transverse Mixing Characteristics

Injection and Measurement of Dye

Manual Reference Samples

Testing for Vertically Well Mixed Conditions

Dye-Tracer Studies

Downstream Study

Upstream Study

Manual Dye Sample Results

Hydrology and Streamflow Measurements During the Dye Studies

Retrieval of Data

Summary

Acknowledgments

References Cited

Appendixes

1. Appendix 1 - Description of data fields in the acoustic Doppler current profiler files.

2. Appendix 2 - Description of data fields in the fluorometric data file (fluor_data.csv).

3. Appendix 3 - Description of data fields in the cross-section profile file (xsec_profile.csv).

4. Appendix 4 - Description of data fields in the manual sample file (manual_sample.csv)

FIGURES

1. Location of study reach and blocks linking to detailed maps showing ADCP transects.

2. Variation of velocity magnitude between the top (Top Q) and bottom (Bottom Q) of the measured zone along an Ohio River transect.

3. Photograph of dye distribution container and injection pumps.

4. Crane-suspended screened intake and tubing leading to the fluorometer.

5. Schematic representation of method used to project ship-track coordinates onto an ideal cross section.

6. Location of transects related to the dye-tracer studies.

7-15. Cross-section profiles of relative dye concentration and depth on 08/02/2005 in the Ohio River at:

7. Cross section OH 6

8. Cross section OH 8

9. Cross section OH 10

10. Cross section OH 11

11. Cross section OH 12

12. Cross section OH 13

13. Cross section OH 14

14. Cross section OH 15

15. Cross section OH 16

16. Photograph of the Ohio River near California, Ohio, taken 08/02/05 at approximately 15:00 EDT.

17. Maximum measured dye concentration as a function of distance from injection point for 08/02/2006 (downstream) tracer study on the Ohio River.

18-19. Cross-section profiles of relative dye concentration and depth on 08/03/2005 in the Ohio River at:

18. Cross section OH 15

19. Cross section OH 16

20-28. Cross-section profiles of relative dye concentration and depth on 08/04/2005 in the Ohio River at:

20. Cross section OH 1

21. Cross section OH 2

22. Cross section OH 3

23. Cross section OH 4

24. Cross section OH 5

25. Cross section OH 6

26. Cross section OH 7

27. Cross section OH 8

28. Cross section OH 9

29. Maximum measured dye concentration as a function of distance from injection point for 08/04/2006 (upstream) tracer study on the Ohio River.

30. Water-surface elevations at the Captain Anthony Meldahl Dam lower pool and Cincinnati gaging station (03255000) during August 1-4, 2005.

TABLES

1. ADCP survey river-mile boundaries and dates of data collection.

2. Streamflows, average velocities, fully mixed concentrations, and coefficients of variation of dye concentrations measured in selected cross sections on the Ohio River upstream from Cincinnati, Ohio.

3. Locations of streamflow-measurement cross sections

4. Summary information for streamflow measurements made on 8/2/05 and 8/4/05.

CONVERSION FACTORS AND ABBREVIATIONS

Multiply	By	To obtain
Length
inch (in.)	25.4	millimeter
foot (ft)	0.3048	meter
mile (mi)	1.609	kilometer
Volume
ounce, fluid (fl. oz)	0.02957	liter
gallon (gal)	3.785	liter
cubic inch (in3)	0.01639	liter
Area
square mile (mi2)	2.590	square kilometer
Velocity
feet per second	0.0348	meters per second
Flow rate
cubic foot per second (ft3/s)	0.02832	cubic meter per second
million gallons per day (Mgal/d)	0.04381	cubic meter per second

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

°F = (1.8 x °C) + 32

Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows:

°C = (°F - 32) / 1.8

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) or micrograms per liter (mg/L).

To convert from Coordinated Universal Time (UTC), subtract 4 hours to obtain Eastern Daylight Time (EDT) or subtract 5 hours to obtain Eastern Standard Time (EST).

Unless specified otherwise, vertical coordinate information is referenced to the North American Vertical Datum of 1988 (NAVD 88) and horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83), Ohio State Plane (Ohio South, zone 3402) coordinates. Coordinates are reported in U.S. Survey Feet.

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U.S. Department of the Interior, U.S. Geological Survey Persistent URL: http://pubsdata.usgs.gov/pubs/of/2006/1159/ Page Contact Information: USGS Publishing Network Last modified: Saturday, January 12 2013, 09:11:07 PM

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