9315 ‎(2)‎

• UCREFRP Catalog Number: 9315
• Author: Harvey, M. D. and R. A. Mussetter.
• Title: Evaluation of the Required Frequency of Bar Forming Events and 2-Dimensional Hydrodynamic Modeling at Colorado Squawfish Spawning Sites in the Lower Yampa Canyon, Colorado.
• USFW Year: 1996.
• USFW - Doc Type: Fort Collins.
• Copyright Material: NO

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Figure 3,10,

Figure 3.11.

Figure 3,12.

Figure 3,13.

Figure 3.14.

Figure 3,15.

Figure 3,16,

Figure 4.1.

Figure 4.2.

Figure 4,3.

Figure 4.4.

Figure 4.5.

Figure 4.6.

Figure 4,7,

Figure 4,8,

Figure 4.9,

Variation in dimensionless grain shear stress (T.') at XS 0.8 in the right branch channel
for two values of dimensionless critical shear stress (T.c) at discharges ranging from 300
to 32,300 cfs, RM 16.5, Yampa River. Median size of the bed material is 45 mm. 3.16

Variation in dimensionless grain shear stress (T.') at XS 2.7 in the right branch channel
for two values of dimensionless critical shear stress (T.c) at discharges ranging from 300
to 32,300 cfs, RM 16.5, Yampa River. Median size of the bed material is 48 mm, 3.17

Variation in dimensionless grain shear stress (T.') at XS 5.1 in the right branch channel
for two values of dimensionless critical shear stress (T.c) at discharges ranging from 300
to 32,300 cfs, RM 16.5, Yampa River. Median size of the bed material is 45 mm. 3.18

Variation in dimensionless grain shear stress (T:) at XS 2.6 in the left branch channel for
two values of dimensionless critical shear stress (T.c) at discharges ranging from 300 to
32,300 cfs, RM 16.5, Yampa River. Median size of the bed material is 45 mm, . . 3.19

Variation in dimensionless grain shear stress (T:) at XS 8 for two values of dimensionless
critical shear stress (T.c) at discharges ranging from 300 to 32,300 cfs, RM 16.5, Yampa
River. Median size of the bed material is 77 mm, based on a 1991 sample. ..,,3.20

Variation in dimensionless grain shear stress (T.') at XS 8, using the primary bar
gradation of 48 mm, for two values of dimensionless critical shear stress (T.c) at
discharges ranging from 300 to 32,300 cfs, RM 16.5, Yampa River. . . . , . . . . . . . 3.21

Variation in dimensionless grain shear stress (T.') at XS 6, using the primary bar
gradation of 48 mm, for two values of dimensionless critical shear stress (T.c) at
discharges ranging from 300 to 32,300 cfs, RM 16.5, Yampa River. . . , . , . . . . . . 3.22

Finite element network for Mathers Hole Study Reach, the Yampa River. ....". 4,3

Color-filled bed elevation contour map from the RMA-2V geometric input data file for the
Mathers Hole Study Reach (Arbitrary datum). , , , . . . . . . , , . . . . . . . , , , . . . , , , , . 4.4

Variation in the Manning's n value with depth, as predicted by Hey (1979) for a 084 of 184
mm, and the curve fit used in the RMA-2V modeling. ..".,........"....... 4.6

Comparison of water-surface profiles along the Mathers Hole Study Reach for
discharges between 325 cfs and 32,300 cfs, as predicted by the 2-D RMA-2V and
calibrated 1-0 HEC-2 models, ".".......,......,."......",.,...",.4.7

Predicted velocity distribution in the Mathers Hole Reach at 1 ,000 cfs,
The arrows show the magnitude and direction of the velocity vectors. "".....,4.9

Predicted velocity distribution in the Mathers Hole Reach at 10,000 cfs,
The arrows show the magnitude and direction of the velocity vectors. ......,., 4.11

Predicted velocity distribution in the Mathers Hole Reach at 32,300 cfs.
The arrows show the magnitude and direction of the velocity vectors, .".,.... 4.13

Flow trajectories at Mathers Hole as determined from measurement of imbrication angles
of clasts that were transported in 1993. ....,..... , , , , , , . . . . . . . . . , , . , . . . . 4,16

Distribution of dimensionless grain shear stress in the Mathers Hole Reach at 1,000 cfs.

, ., " . ...... ... " . . .... , .., , ,.......... , , . . . ., . . , ". , , .. . .. . . , . ,4.17

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