WSP01318

• File Number: 8220.101.08
• Description: Glen Canyon Dam/Lake Powell
• State: AZ
• Basin: Colorado Mainstem
• Date: 5/1/1994
• Author: Western Area Power A
• Title: Glen Canyon Dam Interim Operations - Estimated Net Expense - December 1993 through March 1994
• Water Supply Pro - Doc Type: Report/Study

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For the study period, 95 instances of deviations were found. Most of
the conditions were caused by more than one factor: (e.g., control area
regulation and imports/exports different than preschedule), therefore,
multiple variations can be explained by one anomaly.

The following table summarizes the causes and frequency of the 95
deviations:

Primarv Causers) of Deviation

Control Area Regulation
Control Area Disturbance
CRSP Resource Availability
Aspinall Operations
Morrow Point Operations
Blue Mesa Operations
Imports/Exports Different than Preschedule
Other

Number Percent
Of Instances Of Events

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37/95
10/95
9/95
4/95
1/95
2/95
19/95
13/95

39
11
9
4
1
2
20
14

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EXPENSES

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A. Net Expense

The estimated net expense of interim releases for December 1993
through March 1994 are summarized below:

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Net Expense

December 1993
January 1994
February 1994
March 1994

$551,942
$373,668
$465,858
$343,725

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Attached are
by component
March 1994.

Tables 1 through 4 detailing the net expense analysis
for December 1993, January 1994, February 1994, and

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