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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />. <br />I <br />I <br />I <br />I <br />I " <br />II <br />I <br />I <br />I <br />I <br />I <br /> <br />duration which is defined as the length of time the PDSI level has been below <br />zero, and the amount of draw on the reservoirs as reflected in the pool level <br />(percent snowmelt runoff versus percent remaining storage). In the early stage <br />of drought other indicators may be used to determine if the severity is <br />sufficient to warrant action. These may include the magnitude of the PDSI or <br />the existence of requests from local governments or individuals. <br /> <br />3-7 <br />