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7.13 Technical memorandum describing the methods and results of testing StateCU and <br />StateMod, and describing any changes made to StateCU and StateMod to accommodate <br />alternate flows. <br />7.14 Presentation materials for and documentation of meetings with the CWCB climate <br />technical advisory group. <br />Task 8: Colorado River Com act Overview/Anal ses <br />Objective: <br />The objective of Task 8 is to analyze Colorado River Compact provisions based on previous <br />investigations of the current Compact setting and in relation to implementation of recent <br />guidelines. This process will provide an overview of shares of water available to Colorado based <br />on the provisions. An interpretation will be made of reasonable range of Compact depletion <br />entitlements and flaw requirements for Colorado. The analysis in this task will use scenarios that <br />are consistent with the scenarios used in Tasks 6 and 7. Task 8 analyses will include the same <br />hydrology scenarios as run for StateMod analyses, historical hydrology, extended historical <br />hydrology, and alternate climate change hydrology. <br />Background: <br />A determination of water availability in the Colorado River Basin in Colorado requires an <br />evaluation of amount of water to which Colorado is entitled under the Colorado River Compact <br />and the Upper Colorado River Basin Compact. <br />The CWCB has directed that the CRWAS document reasonable ranges for Colorado's allowable <br />depletions and for the associated streamflows leaving the state, with particular' attention to <br />drought cycles. The CWCB has requested two evaluations of the water legally available to <br />Colorado's given compact considerations, an analysis of previous studies, and a quantitative <br />modeling study incorporating alternate hydrology. <br />Many studies of water availability have been conducted in the Colorado River Basin, both inside <br />Colorado and in the basin as a whole. None of these are completely satisfactory in addressing <br />the question of water availability in Colorado when considering the impact of alternate <br />hydrology. Some studies have provided what are generally considered to be reasonable <br />estimates of hydrologic conditions, but have not represented the Law of the River rigorously. <br />Some have done a reliable jab of representing one or another of the interpretations of the Law of <br />the River, but did not consider alternate hydrology due to climate change. <br />Colorado River Water Availability Study Scope 24 8/28/2008 <br />CRWAS Phase] Contract Scope EX A Fina! <br />