WSP12942

• File Number: 8040.800
• Description: Water Resources for Colorado
• State: CO
• Date: 5/1/2003
• Author: US Dept of Agriculture - Natural Resoruces Conservation Service
• Title: Colorado Basin Outlook Report May 1, 2003
• Water Supply Pro - Doc Type: Data

==_~=c===s=====g================~======.-====.-======.=====-._--==---_._===---======----_.=----====-=-=--=----=--------==-=====-==

UPPER COLORADO RIVER BASIN
Streamflow Forecasts - May 1, 2003

_c_==a_____=__________=____=_______.._._________..____..==_......a....==_.......==...====.=..c==.==.===.====a=_=._==._==a==_=_==_:

1 <<.--=== Drier ------ Future Conditions
I
Forecast I _..___=a__===__.._~_ Chance Of Exceeding * __._~=~__~===~a__=a._.
Period I 90% 70% 50% (Most Probable) 30% 10% 30-Yr Avg.
I (1000AF) (1000AF) I (1000AF) (% AVG.) , (1000AP) (1000AF) I (1000AP)
==__====__=====_s====_=_====__===_._.==_=====..._====-====-.==.-.---1.-.====.....=....-.-===1--==============---=====.._=_.=----==
Lake Granby Inflow APR-JUL 214 235 I 250 111 I 267 292 225

I "
60 118
, I
, 100 105'
I ,
, 185 111 I
I I
I 315 113'
I 55 92 I
, I
, 325 97 I
I ,
I 1550 108 I
, ,
, 115 82'
, I
I 550 78 I
I - I
I 2350 97'
I I

Forecast Point

Willow Creek Reservoir Inflow

APR-JUL

Williams Fork Reservoir inflow

APR-JUL

Dillon Reservoir Inflow

APR-JUL

Green Mountain Reservoir inflow

APR-JUL

Muddy Creek blw Wolford Mtn. Resv,

APR-JUL

Eagle River blw Gypsum

APR-JUL

Colorado River nr Dotsero

APR-JUL

1230

Ruedi.Reservoir Inflow

APR-JUL

Roaring Fork at Glenwood Springs

APR-JUL

Colorado River nr Cameo

APR-JUL

1810

===_m====_=_=_=======__==_===_=-_.____===_==_==__=_===_==_==_=__===_.===s___======_=_m=====a=================_a===__====_=_=====__

2570

2890

2420

I
,
=~a=================_=._==.==m=aa.=_====.==a======.===___a_==_.___==_=_._.=_======_=__============__-_======--====-=-=----====.---
Usable I *** Usable Storage *** , Number This Year as % of
Capacity' This Last 'Watershed of ~===~====~======~
'Year Year Avg I Data Sites Last Yr Average
_===._..==.._.===.=_=~==.=====..=======.===._=====._====_.=_=====_.._=._I_a.=_=_=__.__======.~_====_.a====_DaD...====____===___._.
212,8 ,
I
259.5 I
I
54,3 ,
I
16.8 I
,
59.7 ,
I
16.6 I
,
55.3 I
I
5,9 I
,

UPPER COLORADO RIVER BASIN
Reservoir Storage (1000 AF) - End of April

R~ervoir

DILLON

250.8

125.3

LAKE GRANBY

465.6

32.2

GREEN MOUNTAIN

139.0

35,8

HOMESTAKE

43.0

17.2

RUEDI

102.0

49.4

VEGA

32,0

8.8

WILLIAMS FORK

96.8

12.5

WILLOW CREEK

9.0

6.5

=._..=....a...=._====.._..~_..====a.....=.-._==--.-..=...-=.-..---==.-..--..-.----.--.....-..-===..-..-.---=.--..===-......=....--

42

396

104

44

82

157

271

45

265

84

424

188.8

159.5

60.8

13.0

66.7

16.0

50.2

53

92

173

297

51

299

1420

101

497

2130

6.7

Wetter a==__>>

67

79

51

108

120

95

195

215

167

334

363

280

60

67

60

353

399

335

1680

1870

1440

130

157

141

605

692

710

UPPER COLORADO RIVER BASIN
Watershed Snowpack Analysis - May 1, 2003

8

395

118

BLUE RIVER BASIN

UPPER COLORADO RIVER BASI

MUDDY CREEK BASIN

PLATEAU CREEK BASIN

ROARING FORK BASIN

WILLIAMS FORK BASIN

WILLOW CREEK BASIN

TOTAL COLORADO RIVER BASI

33

423

115

3

2076

90

2

367

77

7

296

72

4

448

121

3

487

167

The average is computed for the 1971-2000 base period,

* 90%, 70%, 30', and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table.

(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.