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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 12 FIGURE 5 10th Percentile Elevations from Januar 2002 to December 2001 Flaming Gorge Elevation 10th Percentile 6040 6030 .... .... ,'. .. , -00 "0 g 6020 c .g ~ 1.) Gj 6010 ". 6000 All 1 O%ile All - 1 I O%ile No Action lO0/0ile All Trace 5 5990 01-2002 01-2004 o I -2006 o 1 -2008 01-2010 01-2012 Y~IT Figure 6 shows another example of how the Action(ALL) and Action(ALL-l) rulesets behave under identical hydrologic conditions. In the first 8 years of trace 5, the Action (ALL) reservoir elevations were the same as the Action(ALL-l) reservoir elevations. This indicated that the releases made by the two rulesets were identical for the first 8 years. However, conditions on the Yampa River in 2005, 2006, and 2007 triggered the Action(ALL) ruleset to attempt to achieve the 18,600 cfs objective. Because conditions were very wet in the Upper Green River Basin in those years, the peak release established by the Action(ALL-l) ruleset was equal to or greater than the threshold peak release that the Action(ALL) ruleset would have reset the peak release to. For this reason, the Action(ALL) reservoir elevations did not deviate from the Action(ALL-l) reservoir elevations during the first 8 years of the trace. In 2010, this was not the case. The Action(ALL) ruleset reset the peak release to achieve the 18,600 cfs objective, resulting in the reservoir elevation dropping about 8 feet below the Action(ALL-l) elevation.