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Modeling Results for <br />Colorado River Basin States' Modeling of <br />Colorado River and Reservoir Management Strategies <br />These observations led to the finding that Powell is more sensitive to an increased <br />7.48 band than an increased Mead balancing elevation under low reservoir <br />conditions. The behavior of Hybrid revl is similar to that of Hybrid Original. In <br />the early and late years, the 10th percentile is higher under Hybrid revl whereas <br />during the middle years, it is higher under Hybrid Original. <br />1,140 <br />1,120 <br />1,100 <br />1,080 <br />c <br />0 <br />m 1,060 <br />W <br />a <br />m <br />d <br />m 1,040 <br />Y <br />a <br />J <br />1,020 <br />1,000 <br />980 <br />2005 <br />Figure 4 -2 <br />Lake Mead 101h Percentile Elevations <br />—4-- Normal <br />—6— Hybrid <br />B Hybrid rev1 <br />--9-- Hybrid rev2 <br />—)(— Hybrid rev3 <br />2010 2015 2020 2025 <br />Calendar Year <br />According to Figure 4 -2, the Hybrid revisions that increased the 7.48 band kept <br />Mead lower (for the most part) at the 10th percentile compared to the Hybrid <br />Original. Raising the balancing elevation results in a slightly higher 10th <br />percentile compared to the Hybrid Original from 2010 through 2020. After 2020, <br />these two strategies are very similar. As with Powell, these observations lead to <br />the finding that Mead is more sensitive to an increased 7.48 band than an <br />increased balancing elevation. <br />19 <br />