7087

• UCREFRP Catalog Number: 7087
• Author: Elliot, J. G., J. E. Kircher and P. V. Guerard.
• Title: Sediment Transport in the Lower Yampa River, Northwestern Colorado.
• USFW Year: 1984.
• USFW - Doc Type: Denver, CO.
• Copyright Material: NO

CONTENTS
Page
Abstract------------------------------------------------------------------ 1
Introduction-------------------------------------------------------------- 1
Hydrology of the Yampa basin---------------------------------------------- 4
Streamflow of the Yampa River at Deerlodge Park--------------------------- 6
Sediment transport at Deerlodge Park-------------------------------------- 11
Annual sediment loads----------------------------------------------------- 18
Estimated impacts of water resource development--------------------------- 21
Sediment budget at Deerlodge Park----------------------------------------- 24
Summary and conclusions--------------------------------------------------- 30
References---------------------------------------------------------------- 32
Supplemental data--------------------------------------------------------- 35
ILLUSTRATIONS
Page
Figure 1. Map of Yampa River basin east of Dinosaur National
Monument showing location of stream gages------------------- 3
2. Hydrographs of mean daily discharges for: A. Station
09251000 Yampa River near Maybell; and B. station
. y----------------
09260000 Little Snake River near Lal ------ 5
3. Map showing principal study sites----------------------------- 7
4. Channel cross section showing magnitude of scour and
fill of bed material---------------------------------------- 8
5. Hydrograph of mean daily discharges for station 09260050
Yampa River at Deerlodge Park------------------------------- 10
6. Estimated flow-duration curve for station 09260050 Yampa
River at Deerlodge Park for period 1941-1983---------------- 12
7. Cumulative sediment load versus discharge relation, showing
the percentage of annual total sediment load transported
by flows less than or equal to a given discharge, station
09260050 Yampa River at Deerlodge Park--------------------- 22
8. Graph showing flow-duration curves of natural Streamflow at
Deerlodge Park, and assumed altered Streamflow-------------- 25
9. Graph of flow-duration curves and annual Streamflow totals
used in the sediment budget--------------------------------- 27
TABLES
Page
Table 1. Hydraulic geometry relations at station 09260050 Yampa River
at Deerlodge Park--------------------------------------------- 9
2. Particle size statistics for sediment in the Deerlodge Park
study reach--------------------------------------------------- 14
3. Sediment-transport equations derived from sediment discharges
measured at statior, 09250050 Yampa River at Deerlodge Park--- 16
4. Sediment-transport equations derived from sediment discharges
estimated with the i•1odified Einstein procedure at station
09260050 Yampa River at Deerlodge Park----------------------- 19
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