WSP06278

• File Number: 8040.970
• Description: Drought Preparedness
• State: CO
• Basin: Statewide
• Date: 6/1/2002
• Author: USDA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Report/Study

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

ARKANSAS RIVER BASIN
Streamflow Forecasts - June 1, 2002

Forecast Point

...-=..=...............--................................................................==-========-=.......................=~...

Wetter ...._>> I
I
I
I 30-Yr Avg.
I (1000AP) (lOOOAF) I O.OOOAF) (t AVG.) I (1000AF) (lOOOAF) I jlOOOAF)
........---...-......-.........-........................==..=======.I.......................!...................c=..=_..._.._.....
Chalk Creek nr Nathrop APR-SBP 3.0 4.8 I 6.1 23 I 10.6 17.3 27
I I
r 77 25 I
I I
I 3.8 19 I
I I
I 85 20 I
I I
I 2.9 19 I
I I
I 2.' 19 I
I I
I lO.3 23 I
I I

Forecast
Period

Arkansas River at Salida

APR-SEP

Grape Creek nr Westcliffe

APR-SEP

Pueblo Reservoir Inflow

APR-SEP

Huerfano River nr Redwing

APR -SEP

CUcharas River nr La Veta

APR-SEP

Trinidad Lake Inflow

APR-SBP

.........__.._.............................................~=.=======c====.~.._...._......_...........~_......._._.........._.....

ARKANSAS RIVER BASIN
Watershed Snowpack Analysis - June 1, 2002

<<....._ Drier ......

ARKANSAS RIVER BASIN
Reservoir Storage (1000 AF) - End of M~y

I
I
..._.__....~...................................=.._.=.......=...===.=.=======..~._....._...-.__....._............-....-...........
Usable I u"" Usable Storage u* I Number This Year as t of
capacitYl This Last I Watershed of =_.._=.~.._=....=
I' Year Year Avg I Data Sites Last Yr Average
...=.=...~.~...._...................................--_.....==-=======.=1..===..=.=_._===..==._....===-==-==.............-........
ADOBE 70.0 12.8 58.6 33.0 I UPPER ARKANSAS BASIN 2 0 0
I
6.3 I
I
39.3 I
I
'.l I
I
10.0 I
I
l28.l I
I
5.7 I
I
18.5 [
I
160.1 I
I
29.7 I
I
77.6 I
I
42.6 I
I

" Reservoir

CLEAR CREEK

11.0

GREAT PLAINS

150.0

HOLBROOK

7.0

"HORSE CREEK

28.0

JOHN MARTIN

335.7

LAKE HENRY

8.0

MEREDITH

42.0

PUEBLO

236.7

TRINIDAD

72.3

nJRQUOISE

126.6

TWIN LAKES

86.0

.=~.==..~-...=..~......_..._..............._..............._._..__..._..........=.._.....__.......~_...E=_.==..~=c===_....=..._...

:"

6.3

19.8

3,0

0.0

61.6

'.7

9.3

118.2

16.1

66.8

45.5

90\

60

2,3

65

2.3

1-4

6.0

62.8

156.6

6.9,

30:2

179.1

33 .3

B4.8

60.7

70\

70

3.'

77

'.7

2.0

..6

6,l

6,3

0.2

Future Conditions

Chance Of Exceeding ""
SOt (Most Probable)

30\

lO\

"

,

l03

l41

310

7.l

11.9

19.6

l2l

l75

'30

'.l

5.8

15.5

'.6

7,8

13.0

17.9

29

..

CUCHARAS & HUERFANO RIVER

2

o

o

PURGATOIRE -RIVER BASIN

o

o

2

TOTAL ARKANSAS RIVER BASI

5

o

o

* 90t, 70t, 30t, and lOt 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 lot and 90\ Chance of Exceeding are actually 5t and 95% exceedance levels.
(2) The value is natural volume - actual volume may be affected by upstream water management.

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