8252

• UCREFRP Catalog Number: 8252
• Author: Allred, T. M. and J. C. Schmidt.
• Title: Channel Narrowing of the Green River Near Green River, Utah
• USFW Year: 1999.
• USFW - Doc Type: History, Rates, and Processes of Narrowing.
• Copyright Material: NO

LIST OF FIGURES

Figure Page

1 Map of the study area in east-central Utah ................................... 31

2 Hypothetical formation and rate of increase in flood-plain
elevation by overbank deposition ................................................. 32

3 History of peak annual instantaneous discharges for
Green River at Green River, Utah, showing peak
flows and a five-year moving average .......................................... 33

4 Flow duration curves for three time periods: pre-1930,
1930-1957, and 1963-1995 .......... ................ ..... ...................... ..... 34

5 Comparison of stage-to-discharge relations at the present
cableway location and at the USGS gage .......;............................ 35

6 Schematic illustrating the importance of using the proper
range of flows when determining bankfull channel
width from discharge measurements ............................................ 36

7 Pattern of scour and fill at the time of discharge
measurements at the Green River cableway ................................ 37

8 Plots of ferry/cableway cross section used by the U.S.
Geological Survey prior to 1930 ................................................... 38

9 Matching photographs of the old ferry/cableway at Little
Valley, approximately 9 km downstream from the town
of Green River, Utah '" ..... ............ ..... ............... ............. ..... ........... 39

10 Changes in bankfull channel characteristics over time, from
USGS discharge measurements and from air photos................... 40

11 Changes in channel geometry between 1932 and 1995...............41

12 Hydraulic geometry relations for the present cableway for
three time periods......................................................................... 42

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