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

c. Review the range of Climate Change Projections and identify a median
range for study.

d. Investigate Effects of Altern ate Climate Change Scenarios on Upper
Colorado River Basin Hydrology

e. Prepare/Apply Factors to CDSS Model Hydrology

f. Calculate multiple scenario s of altered demands due to Climate
Change.

g. Summarize Alternate Hydrology of Climate Change/Memo

h. Acquire and eval uate assessments (i.e. from Experimental Forest s of
the US Forest Service) of vegetative change in Colorado forests

i. Evaluate existing model results, if available, for possible effects of
forest vegetation change on historical hydrology

j. Formulate scenarios of revised hydrology for CDSS.

k. Prepare a memo summarizing investigations into effect on hydrology
of forest vegetative changes and development of associated hydrology.

8 Colorado River Compact Overview/Analyses

9 Preliminary Assessments of Phase I Water Availa bility

a. Formulation of S cenarios of Current Demands and Alternate
Hydrologies

b. Water Availability Simulations w/Compact Consideration

c. Summarization o f Water Availability Simulations

d. Web Based Availability of Simulation Input/Output

10 Phase I Reporting

a. Draft Ph ase I Report

b. Workshop

c. Final Phase I Report

Phase II – Model Refinement for Changes in Current or Future Demands /Analysis

1 Refinement of Phase II Scope of Work/Schedule/Budget

2 Identify Future Demand (Consumptive and Non - Consumptive) Scenarios
for Inclusion in CDSS Model considering:

i. Energy (i.e. oil shale) D evelopment

ii. Other Conditional Water Right Development

iii. Increased M&I Demands

iv. Existing use and development of existing absolute water rights and
facilities , including transmountain diversion systems

v. Other Co nsumptive Demands ( i.e. changes in irrigated acreage )

vi. Non - Consumptive Demands including RICD

vii. ESA Limitations

viii. CRSP Operations ( Aspinall Unit Operations )

ix. Compact Call Administration on Colorado Subbasins

x. Identified Projects and Processes (IPPs)

3 Identify /Impl ement Hydrology/Future Demand Scenarios in CDSS Model

i. Identify up to 10 scenarios of Future Demands/Alternate
Hydrology for implementation in CDSS Model.
Colorado River Water Availability Study Scope 4 October 1 9 , 2007