WSP09347

• File Number: 8040.970
• Description: Basin Outlook Reports
• State: CO
• Date: 1/1/2002
• Author: USDOA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Publication

~=...................Z~=Z~==Z==.====.~S.~===..2.~.Z=Z=====.Z=....._......Z=Z=======Z=..S...~........=..&======Z.......Z~Z=~======Z

UPPER RIO GRANDE BASIN
Streamflo~ Porecasts - April 1. 2002

...._.......=====.~~~=z==~.==.=..==.._...................z....=.=......=..=z=c...z=.........................w:az.=.C.=..=...ze=z=c

I <<....... Drier ,",e.=.. E'Uture Conditions
I
Forecast J ........,...........,.. Chance Of Exceeding .............=..ee==.=
Period I 90' 70' I 50' IMost Probable) I 30' 10' I 30-Yr Avg.
I (lOOOAF) (1000AF) I (lOOOAF) (' AVG.) I (1000AF) nOOOAF) I (lOOOAF)
...._.............................................................-.1.......................1..........................--.........
Rio Grande at Thirty Mile Bndge APR.SEP 39 47 I 54 40 I 62 75 136
1 I
I 51 43 I
1 1
I 138 40 I
I 1
I 45 34 I
1
1
1
I
I
I
1
1
1
1
1
I
1
I
I
I
1
I
1
1
1
1
1
1
1
1

Porecast Point

Rio Grande ReserV~lr Inflow

APR.JUL

Rio Grande at Wagon Wheel Gap

APR.SEP

South Fork Rio Grande at South Fork

APR-SEP

Rio Grande nr Del Norte

APR-SEP

Saguache Creek nr Saguache

APR-SEP

Alamosa Creek abv Terrace Reservolr

APR-SEP

La Jara Creek nr Capulin

MI\Jl-JUL

Trinchera Water Supply

APR-SEP

Platoro ReaerV01[ Inflow

APR-JUL
APR-SE:P

Conejos River nr Mogote

APR.SEP

San Antonio R~ver at Ort1z

APR-SEP

Los PlnO& River nr Ortlz

APR - SEP

CUlebra Creek at San LU1S

APR-SEP

o
Costilla Reservoir 1nflow

MAR-JUL

Costilla Creek nr Costilla

,
MI\Jl-JUL

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18.4

"

'"

..]

7.5

12.0
23

13.0

4.0

UPPER RIO GRANDE BASIN
Reservoir Storage {1000 AFI - End of March

39

9B

35

21

.24

57

0.7

0.0

5.2

4'

122

"

'57

177

33

Wetter .....:>'"

"

182

60

242

19.9

34

4.20

24

30
35

95

].7

"

15.5

5.'

12.5

.

"

118

11.7

14 .0

42

24.

]45

24

27

39

Bl

'32

.93

.40

"

33'

531

12.3

15.6

39

29

33

19."7
27

25
29

39
4'

45

70

6B

75

l8

6.85

8."70

1.7

2.'

16

]5

40

16.

lB.

25

].
4]

"
71

7.'

10.0

44

'25

200

2.4

4.1

39

5.7

16.4

7.2

..5

33

]7

74

24

23

..2

10.6

UPPER RIO GRANDE BASIN
Watershed Snowpack Analysis - Apr1l 1. 2002

Reservo~r

~~==..........................~.....~.~.ZKE=..Z==.~Z..._===.============~.=.======z..=.._.._K_E............~~==~==t===~========z~z~..

Average

Usable I
Capacityl
1

... Usable Storage
This Last
Year Year

Wd te rshed

Avg

Number
of
Data Sites

This Year as , of

Last Yr

CON'!'INENTAL

15.0

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5

43

].

PLA'I'ORO

53.7

RIO GRANDE

51.0

SANCHE:Z

103.0

SANTA MARIA

..5.0

TERRACE

13.

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4.0

16.8

13 .8

24.

7.7

'.2

14.2

15.9

27 4

10.2

.0

,.]

5.'

ALAMOSA CREEK BASIN

CONEJOS & RIO SAN ANTONIO

24.5

CULEBRA & TRINCHERA CREEK

19.3

10.8

UPPER RIO GRANDE BASIN 11

24.9

7.6

TOTAL UPPER RIO GRANDE BA 23

2

25

27

40

45

32

].

15

)7

. 90'. "70'. 30', and 10' chances 0: exceeding are the probabilities that the actual volume w1lI exceed th~ volumes 1n the table.

The average is computed for the 1971-2000 base perlod.

(I) 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.