Colorado Basin Outlook Report March 1 2005

• Description: Colorado Basin Outlook Report March 1 2005
• State: CO
• Date: 3/1/2005
• Author: Green, Allen; Knight, Bruce
• Title: Colorado Basin Outlook Report March 1 2005
• Water Supply Pro - Doc Type: Report/Study

YAMPA, WHITE, AND NORTH P
.ATTE RIVER BASINS
-
3treamflow
Forecasts
March 1, 2005
Year as % of
l «_____=
Drier
Forecast Point
Forecast
I
Yr Average
_
Period
l 90%
70%
50%
l 30%
(1000AF)
(1000AF)
NORTH PLATTE RIVER nr Northgate
APR -JUL
104
148
183 75
APR -SEP
89
158
LARAMIE RIVER nr Woods
APR -JUL
41
77
101 82
APR -SEP
44
83
Yampa R abv Stagecoach Res
APR -JUL
11.4
17.7
Yampa River at Steamboat Springs
APR -JUL
131
181
Elk River nr Milner
APR -JUL
187
243
Elkhead Creek nr Elkhead
APR -JUL
15.2
23
ELKHEAD CREEK blw Maynard Gulch
APR -JUL
21
38
Fortification Ck nr Fortification
MAR -JUN
1.40
4.10
Yampa River nr Maybell
APR -JUL
430
620
Little Snake River nr Slater
APR -JUL
98
127
LITTLE SNAKE R nr Dixon -
APR-JUL
195
260
LITTLE SNAKE R nr Lily
APR -JUL
215
285
White River nr Meeker
APR -JUL
136
171
.ATTE RIVER BASINS
-
1, 2005
Number
March 1, 2005
Year as % of
Watershed of
Future Conditions ______=
Wetter
Last
Yr Average
= Chance Of Exceeding
107
I
NORTH PLATTE RIVER BASIN 12
50%
l 30%
10% l
30 -Yr Avg.
(1000AF) (% AVG.)
l (1000AF)
(1000AF) l
(1000AF)
183 75
l 221
284
245
205 76
250
320
270
101 82
i
l 125
161
123
110 82
i 137
176
135
22 76
I
l 26
33
29
215 77
I
l 250
300
280
285 88
I
i 330
403
325
30 77
I
l 40
59
39
50 85
I
62
79
59
6.00 80
I
( 7.90
10.60
7.50
750 76
l
l 880
1070
990
150 94
I
l 174
214
159
I
305 92 (
350
415
330
I
330 90 i
375
445
365
I
200 69 l
234
294
290
YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Reservoir Storage (1000 AF) - End of February
IISable l * ** Usable Storage * **
Reservoir Capacityl This - Last
l Year Year Avg
STAGECOACH 33.3_ 27.3 27.7 24.0
YAMCOLO 9.1 3.5 5.9 6.5
I
YAMPA, WHITE, AND NORTH PLATTE RIVER BASINS
Watershed Snowpack Analysis -
March
1, 2005
Number
This
Year as % of
Watershed of
Data Sites
Last
Yr Average
LARAMIE RIVER BASIN 3
107
84
NORTH PLATTE RIVER BASIN 12
108
88
TOTAL NORTH PLATTE BASIN 14
108
88
ELK RIVER BASIN 2
115
106
YAMPA RIVER BASIN 12
94
83
WHITE RIVER BASIN 6
92
86
TOTAL YAMPA AND WHITE RIV 17
94
84
LITTLE SNAKE RIVER BASIN 8
106
102
TOTAL YAMPA, WHITE AND NO 36
101
90
* 90%, 70 %, 50 %, 30 %, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table.
The average is computed for the 1971 -2000 base period.
(1) - The values listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels.
(2) - The value is natural volume - actual volume may be affected by upstream water management.