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Estimates of Shear Stress and Measurements of Water Levels in the Lower Fox River near Green Bay, Wisconsin

Scientific Investigations Report 2006-5226

In cooperation with the University of Wisconsin?Milwaukee
By:

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Abstract

Turbulent shear stress in the boundary layer of a natural river system largely controls the deposition and resuspension of sediment, as well as the longevity and effectiveness of granular-material caps used to cover and isolate contaminated sediments. This report documents measurements and calculations made in order to estimate shear stress and shear velocity on the Lower Fox River, Wisconsin. Velocity profiles were generated using an acoustic Doppler current profiler (ADCP) mounted on a moored vessel. This method of data collection yielded 158 velocity profiles on the Lower Fox River between June 2003 and November 2004. Of these profiles, 109 were classified as valid and were used to estimate the bottom shear stress and velocity using log-profile and turbulent kinetic energy methods. Estimated shear stress ranged from 0.09 to 10.8 dynes per centimeter squared. Estimated coefficients of friction ranged from 0.001 to 0.025. This report describes both the field and data-analysis methods used to estimate shear-stress parameters for the Lower Fox River. Summaries of the estimated values for bottom shear stress, shear velocity, and coefficient of friction are presented. Confidence intervals about the shear-stress estimates are provided.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Estimates of Shear Stress and Measurements of Water Levels in the Lower Fox River near Green Bay, Wisconsin
Series title:
Scientific Investigations Report
Series number:
2006-5226
Edition:
-
Year Published:
2006
Language:
ENGLISH
Contributing office(s):
Wisconsin Water Science Center
Description:
viii, 182 p. (appedix seperate file online)
Number of Pages:
190
Additional Online Files(Y/N):
Y