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<br />002131. <br /> <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 Beach/Habitat-Building Flows (BHBF) could be released from Glen Canyon <br />Dam. The Technical Work Group has evaluated and the Adaptive Management Work Group <br />has recommended the following triggering criteria for the release of a BHBF: <br /> <br />1. if the January forecast for the January-July unregulated spring runoff into Lake Powell <br />exceeds 13 MAP 9about 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 MAP, <br /> <br />then a BHBF could be released from Glen Canyon Dam if then deemed appropriate from an <br />environmental perspective. The AOP prepared under the 1968 Act allows a BHBF to occur <br />in 1998 if hydrologic conditions are appropriate. <br /> <br />12 <br />