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<br />Every measure will be taken to prevent such an uncontrolled powerplant bypass this spring in <br />order to protect the Grand Canyon ecosystem downstream of Lake Powell. In this regard, <br />technical discussions have recently occurred regarding the hydrologic triggering mechanisms . <br />under which beachthabitat-building'flows could be released from Glen Canyon Dam. The <br />Technical Work Group has evaluated and the Adaptive Management Work Group has <br />. recommended the following triggering criteria for the release of a beachthabitat-building <br />flow: <br /> <br />1. If the January forecast for the January-July unregulated spring runoff into Lake Powell <br />exceeds 13 maf(about 140 percent of normal), or <br /> <br />2. Anytime a Lake Powell inflow forecast would require a powerplant monthly release <br />greater than 1.5 ma4 then a beachthabitat-building flow could be released from Glen Canyon <br />Dam if then deeined appropriate from an environmental perspective. <br /> <br />..... <br /> <br />~:;_-"!r..: ':. _.' :.', .~, ; <br /> <br />~ ~'. <br /> <br />..;;"J ,. <br /> <br />-..' .!". <br /> <br />',,;' <br /> <br />._, -. -.." <br />~_ h _.".'" . <br /> <br />':-~ '":'- (. ': ). .;:--:.:.,-. <br /> <br />-'. ,"--;" <br /> <br />.~rL:_".:...:" '.'~:.. . <br /> <br />.:.,." . <br />...., ".' .. <br /> <br />.. <br />..._ -0__. _. <br /> <br />.-. ';'::;;',:':' <br /> <br />.. ,:., .' j'''': -' <br /> <br />: ;-,'~ <br /> <br />. <br />, ,) <br /> <br />- <br /> <br />, <br />. <br />