CRWaterAvailabilityScope - Final Phase I Scope

• Title: Water Availability Study of Colorado River and Tributaries Phase 1 Scope of Work
• Date: 10/19/2007
• Author: CWCB
• Interbasin CC - Doc Type: General Resources

PHASE I TECHNICAL APPROACH:

Scope of Work Refinement
1. – As one of the main purposes of this study is to
provide valuable input to Basin Roundtable members who are evaluating water
needs, existing and future water shortages and water supply alternatives, it is
important to have general consensus with the BRT members that the Study scope
of work would provide valuable input to their pr ocesses. The process of scope
refinement is expected to include:

a. Presentation of the draft scope to the IBCC members for comment,

b. Refinement of scoping document based on IBCC member comments,

c. Obtain Basin Roundtable comments following IBCC approval of the
scope .

d. Finalization of scope after consideration of BRT comment s and IBCC
further input for use in consultant procurement for the Study.
This task is the responsibility of the CWCB Study management team for the
Study and would be performed prior to contra ctor procurement .

Deliverable
: Finalized scope of work for Phase I to be incorporated into
contractor procurement process.

Literature Review
2. Perform/Summarize of Previous Studies/Investigations – A n
initial review /summary will be performed of recent stu dies and investigations
related to general water availability investigations of Colorado River tributaries
including , but not limited to, :
a. Statewide Water Supply Initiative (S WSI ) documents
b. CDSS Documentation of StateM od s ubbasin models
c. Alternate Hydrology Methods using tree ring based hydrology ( including Prairie,
J.R. (2006), "Stochastic Nonparametric Framework for Basin Wide Streamflow
and Salinity Modeling: Applic ation for the Colorado River Basin" )
d. CWCB Investigations of Colorado River Compact (including 1995 analysis of
w ater available to Colorado under Compact ) .
e. Tipton and K almbach Studies
f. SCS Basin Studies
g. USBR Basinwide Planning Reports
h. Upper Colorado River C ommission Col or ado River Compact Analyses
i. Eric Kuhn Analysis of Compact Obligations
j. Colorado River and Upper Colorado River Compacts and Mexican Treaty
k. Coordinated Long - Range Operating Cr iteria , Interim Surplus Guidelines , and
potentially Lower Basin Short age Guidelines and Coordinated Operations of
Lake Powell and Mead.
l. Hydrologic determinations of 1988 and 2007.

A similar review/summary will be perfor med of documents related to climate change
and streamflow variability , such as the CWRRI Completion Repor t No. 208 on the
“Impact of Streamflow Variability on the Colorado River System Operation”.

Colorado River Water Availability Study Scope 7 October 1 9 , 2007