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<br />Colorado River Water Conservation District <br />Hydro-Climate Studies and Predictions <br /> <br />Southern Oscillation Index (SOI) for similar periods as MEI. <br />? <br /> <br />Atlantic Multi-decadal Oscillation (AMO) for similar periods as MEI <br />? <br /> <br />Deliverables: <br />? <br /> <br />Defined quantitative relationships between the HCI’s and <br />basin average precipitation for Oct-Dec, Oct-Mar, Apr-Jun <br />and Jul-Sep. This data will be provided in a Microsoft Excel <br />format. <br />? <br /> <br />Defined quantitative relationships between the HCI’s and <br />the basin volume Apr-Sept. runoff in these basins. This data <br />will be provided in a Microsoft Excel format. <br />? <br /> <br />Defined quantitative relationships between the HCI’s and <br />the timing of runoff of the Apr-Sept. volumes in these <br />basins. This data will be provided in a Microsoft Excel <br />format. The timing aspect is anticipated to be described on a <br />monthly basis. <br />? <br /> <br />A written report outlining the results and a preliminary <br />‘guideline’ for usage. In addition a presentation of the <br />results, preferably to be presented at the June 2007 CWCB <br />board meeting. <br />CWCB will assist in procuring naturalized flows from some of these basins to be <br />coordinated with HDR. <br /> <br />? <br />Demand: Relate the average basin temperature and number of days with high <br />temperatures > 90F* (for select stations) for April to September, the monthly basin <br />precipitation values, and number of days per month with > 0.10” precipitation* for <br />(for select stations) in April to September within the basin to the following hydro- <br />climate indices. These relationships will be calculated for the Dolores-San Juan, Rio <br />Grande and Arkansas basins: <br /> <br /> <br />Multivariate ENSO Index (MEI) for the periods of Jul/Sep through Oct/Dec <br />? <br />three-month averages and five-month averages <br /> <br />Pacific Decadal Oscillation (PDO) for similar periods as MEI, <br />? <br /> <br />North Atlantic Oscillation (NAO) for similar periods as MEI, <br />? <br /> <br />Southern Oscillation Index (SOI) for similar periods as MEI, <br />? <br /> <br />Atlantic Multi-decadal Oscillation (AMO) for similar periods as MEI <br />? <br /> <br />Deliverables: <br />? <br /> <br />Defined quantitative relationships between the HCI’s and <br />the basin average monthly precipitation and monthly days <br />with > 0.10” precipitation (at select stations). This data will <br />be provided in a Microsoft Excel format. <br />? <br /> <br />Defined quantitative relationships between the HCI’s and <br />basin average monthly temperatures and number of days <br />with highs > 90F (at select stations). This data will be <br />provided in a Microsoft Excel format. <br />HDR Page 2 <br />