Yampa River Overview

• Description: Yampa River Management Plan
• State: CO
• State: UT
• State: WY
• Basin: Yampa/White/Green
• Water Division: 6
• Date: 1/1/3000
• Title: Yampa River Overview
• Water Supply Pro - Doc Type: Report/Study

4
54.0
6
10/17/96
242.8
215.0
6
59.8
6
9/10/97
358
370
6
62.8
9
9/10/96
132
119
6
69.8
6
9/11/97
407
337
6
70.8
3
9/15/97
474
400
6
73.3
6
9/26/96
286
284
6
74.5
6
9/10/97
450
370
6
75.3
1
9/10/97
406
370
6
76.3
3
9/16/97
465
415
6
77.8
6
9/12/96
136
110
8
92
3
9/17/97
459
407
8
94
8
9/25/96
330
288
8
99
2
9/17/97
485
407
8
102.5
2
9/12/97
399
320
8
104.5
5
8/20/97
719
719
8
105.5
1
9/2/97
515
384
8
108
1
9/2/97
431
384
8
109.8
1
9/2/97
510
384
8
111.3
1
9/2/97
470
384
8
115.5
6
9/24/96
332
253
8
117.5
4
8/31/97
424
464
8
117.5
3
9/1/97
424
405
8
119
5
8/31/97
440
464
8
120.4
1
8/31/97
464
464
8
120.8
3
8/30/97
513
483
8
121.5
5
8/29/97
420
538
8
124
5
8/28/97
485
519
1). Riffle Infection Point Identification
A. Echo Park to Cross Mountain
Fifteen riffle cross sections were surveyed in strata 1, 27 in strata 2, 2 in strata 3
and 8 in strata 4. A total of 359 inflection points were identified, one each for the seven
different variables for all 52 riffle cross sections (Appendix IA, 2A, 3A and 4.A., Table
1).
Wetted and Percent Wetted Perimeter and Stream Width
The mean inflection point for wetted perimeter was 177 cfs Table 2a (range: 131-
225 for strata 1 -4, Tables 2b -e). The mean wetted perimeter was 118 ft (range: 102 -192
for strata 1 -4). The mean inflection point for percent wetted perimeter was 147 cfs
(range: 106 -170 for strata 1 -4). The mean wetted perimeter was 40.3% (range: 27.5 -55.0
for strata 1 -4). The mean inflection point for wetted width was 118 cfs (range: 70 -122 for
strata 1 -4). The mean wetted width was 104 ft (range: 84 -166 for strata 1 -4).
13