The Secretary of the Interior - Washington - CO River Interim Guidelines for Lower Basin Shortages and the Coordinated Operations for Lake Powell and Lake Mead

• Year: 2007
• Title: The Secretary of the Interior - Washington - CO River Interim Guidelines for Lower Basin Shortages and the Coordinated Operations for Lake Powell and Lake Mead
• CWCB Section: Interstate & Federal
• Description: The Secretary of the Interior - Washington - CO River Interim Guidelines for Lower Basin Shortages and the Coordinated Operations for Lake Powell and Lake Mead
• Publications - Doc Type: Other

Interim Guidelines for the
Operation of Lake Powell
and Lake Mead
Section 2. Determination of Lake Mead Operation During the Interim Period
In the development of the AOP, the Secretary shall use the August 24-Month Study
projections for the following January 1 system storage and reservoir water surface
elevations to determine the Lake Mead operation for the following Calendar Year as
described in this Section 2.
A. Normal Conditions
1. Lake Mead above elevation 1,075 feet and below elevation 1,145 feet
In Years when Lake Mead elevation is projected to be above 1,075 feet and below
elevation 1,145 feet on January 1, the Secretary shall determine either a Normal
Condition, or, under Section 2.B.5., an ICS Surplus Condition.
B. Surplus Conditions
1. Partial Domestic Surplus
[Adopted January 16, 2001; Deleted December 13, 2007]
2. Domestic Surplus
(Lake Mead at or above elevation 1,145 feet and below the elevation that triggers a
Quantified Surplus (70R Stx-ategy))
In years when Lake Mead content is projected to be at or above elevation 1,145 feet,
but less than the amount which would initiate a Surplus under Section 2.B.3.,
Quantified Surplus, or Section 2.B.4., Flood Control Surplus, on January 1, the
Secretary shall determine a Domestic Surplus Condition. The amount of such
Surplus shall equal
a. From the effective date of these Guidelines through December 31, 2015
(through preparation of the 2016 AOP):
1) For Direct Delivery Domestic Use by MWD, 1.250 maf reduced by the
amount of basic apportionment available to MWD.
2) For use by SNWA, the Direct Delivery Domestic Use within the SNWA
service area in excess of the State of Nevada's basic apportionment.
3) For use in Arizona, the Direct Delivery Domestic Use in excess of
Arizona's basic apportionment.
December 2007 ROD -Colorado River Interim Guidelines for
34 Lower Basin Shortages and Coordinated
Operations for Lake Powell and Lake Mead