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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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