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

ARKANSAS RIVER BASIN
Streamflow Forecasts - March 1, 2005
ARKANSAS RIVER BASIN
Reservoir Storage (1000 AF) - End of February
Usable I
* ** Usable Storage * **
Drier =____=
Future Conditions =_____=
Wetter
Last
- Forecast Point
Forecast
Year
Year
Chance Of Exceeding
ADOBE
70.0
0.0
0.0
Period
90%
70%
50%
30%
10%
30 -Yr Avg.
- _
0.0
(1000AF)
(1000AF) (
(1000AF) (% AVG.)
(1000AF)
(1000AF)
(1000AF)
Chalk Creek nr Nathrop
APR -SEP
10.6
20
27 100 (
34
43
27
Arkansas River at Salida
APR -SHP
219
280 i
325 105 i
370
430
310
Grape Creek nr Westcliffe
APR -SEP
13.1
22
29 148
37
51
19.6
Pueblo Reservoir Inflow
APR -SEP
310
395 i
455 106 i
515
600
430
Huerfano River nr Redwing
APR -SEP
13.1
19.0
23 148 (
27
33
- 15.5
Cucharas River nr La veta
APR -SHP
5.8
12.8
17.5 135
23
30
13_.0
Trinidad Lake Inflow
APR -SEP
18.0
40
55 125
70
92
44
ARKANSAS RIVER BASIN
Reservoir Storage (1000 AF) - End of February
.-------------- ------
ARKANSAS RIVER BASIN
Watershed Snowpack Analysis - March 1, 2005
Number This Year as % of
Watershed of =_____ _= =_____
Data Sites Last Yr Average
UPPER ARKANSAS BASIN 9 115 99
CUCBARAS & HUERFANO RIVER 4 154 151
PURGATOIRE RIVER BASIN 2 165 163
TOTAL ARKANSAS RIVER BASI 14 133 115
* 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.
Usable I
* ** Usable Storage * **
Reservoir
Capacity
This
Last
Year
Year
Avg
ADOBE
70.0
0.0
0.0
36.0
CLEAR CREEK
11.0
8.9
8.3
6.8
GREAT PLAINS
150.0
0.0
0.0
38.9
HOLBROOK
7.0
0.0
0.0
4.8
HORSE CREEK
28.0
0.0
0.0
12.7
JOHN MARTIN
335.7
57.9
36.0
132.2
LAKE HENRY
8.0
6.6
4.7
5.6
MEREDITH
42.0
34.7
23.4
18.1
PUEBLO
236.7
138.1
108.1
168.7
TRINIDAD
72.3
26.2
17.8
26.2
TURQUOISE
126.6
68.3
66.3
77.3
TWIN LAKES
86.0
32.8
38.5
44.0 I
.-------------- ------
ARKANSAS RIVER BASIN
Watershed Snowpack Analysis - March 1, 2005
Number This Year as % of
Watershed of =_____ _= =_____
Data Sites Last Yr Average
UPPER ARKANSAS BASIN 9 115 99
CUCBARAS & HUERFANO RIVER 4 154 151
PURGATOIRE RIVER BASIN 2 165 163
TOTAL ARKANSAS RIVER BASI 14 133 115
* 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.