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<br />~~!'?~9 <br />(j '-" t9.- ...- <br /> <br />a (1), (2), or (3) next to each option, co=esponding to one of the three <br />water shortage stages above. <br /> <br />[ <br /> <br />1iORRSHEET 7 <br />COnservation Options <br /> <br />c. Triqqerincr Criteria <br /> <br />It is very difficult to quantify shortages and. to tell whether they are <br />getting better or worse. 'lhe purpose of this exercise is to develop <br />=iteria that give you a qeneral idea of whether a shortage is getting <br />better or worse. 1hink about how the stages relate to each other. How <br />would you know when a water shortage is developing? List several factors <br />that indicate that a water shortage is on the way. Now list several factors <br />that indicate that a minor shortage is becoming moderate, and. that a <br />moderate shortage is becoming severe. 'Ihese are called "triggering <br />=iteria." <br /> <br />To help you develop your =iteria, you may want to consider the following <br />factors: <br /> <br />o static well-depth levels; <br />o well draw-down rates; <br />o water table levels; <br />o storage capacity levels; <br />o river and. stream levels; <br />o weather forecasts; <br />o precipitation records (rainfall and. snowpack); <br />o water quality; and. <br />o supply infonnation from water wholesalers. <br /> <br />Remember that forecasting the severity of a drought is an inexact science, <br />even for the most sophisticated utilities. Decisions on which level of a <br />col1sel:Vation program to adopt must often be made without the support of good <br />teclmical water supply infonnation. <br /> <br />1iORKSHEET 8 <br />Triggering' criteria <br /> <br />D. SUpplv Aucunentation <br /> <br />A listing and. evaluation of supply augmentation options that could be <br />undertaken by a utility should be made. To assist utilities in developing <br />their own list of supply augmentation options, a suggested list is provided <br />in Table 2. Again, this list is not conplete. utilities should add, <br />delete, or modify supply augmentation options to best accorrnnodate their <br /> <br />21 <br /> <br />