WSP02689

• File Number: 8040.970
• Description: Basin Outlook Reports
• State: CO
• Date: 1/1/1999
• Author: USDOA
• Title: Colorado Basin Outlook Report
• Water Supply Pro - Doc Type: Publication

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UPPER RIO GRANDE BASIN
Streemflow Forecaata - March '1 1999

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<<ac==== Drfer c=c=== Future Conditions ======= Wetter =====>>

Forecast Po; nt

Forecast
Period

ce.a=cc.a==aa=ac===c Chance Of Exceedfng *
90X 70X 50X (Moat Probable)
(1000AF) (1000AFl (1000AFl (X AVG.)

a=====================

30X
(1000AF)

lOX
(1000AF)

30.Yr AVQ.
(1000AF)

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Rio Grande at Thirty Mile Bridge APR'SEP 66 82 95 71 110 137 133
Rio Grande Reservoir Inflow APR. JUL 60 74 85 72 98 121 118
Rio Grande at Wagon Wheel Gap APR'SEP 95 173 225 68 277 355 330
South fork Rio Grande at South Fork APR'SEP 37 71 95 72 119 153 132
Rio Grande nr Del Marte APR'SEP 152 285 375 72 465 598 520
Saguache Creek nr Sagueche APR'SEP 9.3 13.2 20 59 27 37 34
Alamosa Creek abv Terrace Reservoir APR.SEP 19.6 35 45 65 55 70 69
La Jara Creek nr Capulin MAR-JUL 1.72 2.28 4.50 52 6.72 9,98 8.60
Trfnchera Water Supply APR-SEP 8.4 10.3 21 70 32 47 30
Platoro Reservo;r Inflow APR'JUL 22 33 40 68 47 58 59
APR'SEP 26 37 45 69 53 65 65
Conejos River nr Mogote APR'SEP 58 101 130 65 159 2D2 201
San Antonio River at Ortiz APR. SEP 2,1 4.9 7,5 47 10,6 16.1 16,0
Los Pinos River nr Ortiz APR'SEP 13,6 32 45 63 58 76 72
Culebra Creek at San Lu;s APR'SEP 5,2 T.8 13,0 65 20 30 20
Costilla Reservofr Inflow MAR.JUL 1.25 2.95 4,50 50 6.38 9.76 9.10
Costilla Creek nr Costilla MAR'JUL 4.0 6.2 10.0 46 16,2 25 22

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UPPER RIO GRANDE BASIN
Reservo;r Storage (1000 AF) - End of February

UPPER RIO GRANDE BASIN
Yaterahed Snowpock Analysfa . March I, 1999

Usable I *** Usable Storage ***
Capacity This lIst
Year Year Avg
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Watershed

NLII'Oer Thts Year as X of
of =================
Data Sites Last Yr Average

Reservoi r

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CONTINENTAL 15.0 4,7 4.8 5.3 ALAMDSA CREEK BASIN 2 114 74
PLA TCIIO 53,7 18.9 25,3 16.3 CONEJOS & RIO SAN ANTONIO 4 93 T5
RIO GRANDE 51.0 23.3 6.5 16.5 CULEBRA & TRINCHERA CREEK 4 59 T3
SANCHEZ 103.0 36.8 34.1 16.9 UPPER RIO GRANDE BASIN 12 132 90
SAIITA MARIA 45.0 9.2 7.7 8.9
TERRACE 13.1 7,4 10,8 5,9

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* 9011 701. 30%, and 10X chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table.

The average i. cClftp.lted for the 196'-1990 base period.

(1) The values l iated LI'lCIer the 'OX and 90% Chance of Exceed;ng are actually 5X and 95X exceedance levels.
(2) The value is natural volume - actual volume may be affected by upstream water management.