WSP06047

• File Number: 8282.600.10.A
• Description: Colorado River Annual Operating Plans
• Basin: Colorado Mainstem
• Date: 1/1/1993
• Author: CWCB
• Title: 1993 Annual Operating Plan ‎(AOP)‎
• Water Supply Pro - Doc Type: Data

TO ALL ANNUAL OPERATING PLAN RECIPIENTS

MAILED FROM

UPPER COLORADO REGION
WATER OPERATIONS BRANCH
ATTENTION: UC-439
P.O. BOX 11568
SAL~ LAKE CITY, UT 8414&
PHONE (FTS)588-5576 (COHIBOl-524-5576

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.~............................~.....................lMPORTANTNOTICE............................................*.........,

THIS OPERATION STUDY REFLECTS THE 1993 ANNUAL OPERATING PLAN THAT HAS BEEN APPROVED BY THE SECRETARY Of THE INTERIOR WHICH
LIMITS CONSUMPTIVE USE BY THE LOWER BASIN STATES TO 7.S HAF. IF YOU HAVE QUESTIONS PLEASE CALL THE ABOVE NUHBER.

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RUNOFF PROJECTIONS AND INFLOW INFORMATION INTO UPPER BASIN RESERVOIR PROVIDED BY THE COLORADO RIVER FORECASTING SERVICE
THROUGH THE NATIONAL WEATHER SERVICE'S COLORADO BASIN RIVER FORECAST CENTER ARE AS FOLLOWS:

MONTHLY DISTRIBUTION OF FLOW (1000 A-F)
/ OBS / FORECASTS /
/HAY JUN JUL AUG/ SEP OCT NOV DEI' /
LAKE POWELL /1467 /1252 /5':.0 /344 /315 /320 /300 /275
BLUE MESA / 159 / 152 / 86 / 76 / J4 / 30 / 2a / 22
FONTENRLLR / 92 / 6B / 69 f 34 / 26 / 25 / 25 / 20 .
FLAMING GORCE f 123 / 77 f 69 / 36 / 26 f 25 / 25 / 20
VALLECITO / 71 / 52 / 20 / 17 / 10 / 7 / 6 / 5
NAVAJO / 303 / 200 / 65 / 55 / 32 / 20 / 18 / 18

Precip.1.tat.1.on over the upper Colorado Basin wa.s below average during September.
Juan received 50', 60\, and 45~ of average accumulatlon. respect.1.vely.

The upper Colorado mainstem, Green, and

Streamflow during September was also well below a.verage. Inflow to Lake Powell was 315 KAf or 69\ of dverage.
Gceen wece less than 50" of average while san Juan and upper Colorado maLust.em flows were 60\
to 85\ at average.

Flows in 1

Conditions have been drier than average during the first 6 days of October and streamtlaw5 remain a very low le~els. The fil
forecasts shown above are slightly lower than those .1.ssued 10/1/92.

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