WSP06355

• File Number: 8282.600.40
• Description: Colorado River Reservoir Operations
• Basin: Colorado Mainstem
• Date: 11/1/1996
• Author: CWCB
• Title: Colorado River Reservoir Operations Status Reports - Part 2B, November and December
• Water Supply Pro - Doc Type: Data

again at night. The release pattern shall be constrained by flows
at Jensen, whereby instantaneous flows at Jensen shall deviate not
more than 12.5 percent above or 12.5 percent below the daily
average flow on the Green River at Jensen. Releases may go outside
of these guidelines, if emergency or severe power marking
circumstances exist. The daily average release will be 1900 cfs
during this period. Instantaneous releases will generally be
between 1400 cfs and 2700 cfs, although these values could change
depending Yampa River flows. Ramping shall generally occur at
rates not greater than 25 MW (800 cfs) per hour.

Open forum discussions on Flaming Gorge operations have been taking
place at meetings of the "Flaming Gorge Working Group". A Working
Group meeting was held October 23 in Vernal, UT. The next Working
Group meeting is scheduled for ~anuary 9 at 11 ~m in He?pr, UT.
For more information on the Working Group, contact Ed Vidmar at
801-379-1000.

ASPINALL - October unregulated inflow into Blue Mesa was 43,700
acre-feet or about 121 percent of average.

Current inflow into Blue Mesa is about 750 cfs. Diversions throuqh
the Gunnison Tunnel were f=1hu:t off for the winter season on NrY\TAmhQ.,...
2. Releases from Crystal Dam are about 1,300 cfs, leaving
approximately the same flow in the river.

With a wetter than expected month of October, reservoir inflows
were higher than expected resulting in system releases not being
cut back with the Gunnison Tunnel reductions. The river flows in
the Black Canyon are projected to remain betwee
levels dur~ng the winter mont s 0 ove er ~E~~DR~~r~?rv.

The next operation meeting for the Aspinall Unit will be held in
January 1997 at the USBR office in Grand Junction, Colorado.
Anyone needing further information about this meeting can contact
Ed Warner in the Grand Junction Area Office at [phone].

NAVAJO - October unregulated inflow into Navajo Reservoir was about
29,000 a~~~i~et or approximately 67 percent of average.

Precipitation in the San Juan Basin has been extremely low during
the last water year. During the month of October several storm
systems moved across the basin leaving much needed moisture. As of
November 12, the basin's snowpack is ranging from 130 - 145 percent
of average.

Currently releases from Navajo are 300 cfs. With Navajo Reservoir
being low these releases are forecasted to remain the same for

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