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r: <br />West Elk Mine 2006 Annual Hydrology Report 3 <br />Figure 3. Precipitation Data for McClure Pass <br />McClure Pass <br />6 <br />.-. 5 --- -- --- --- --- --- --- -- ---- --- ---- --- --- --- ---- -- <br />a~ <br />s _ <br />~ 4 ---- --- - - --- - - --- --- -- --- --- --- --- ---- --- -- <br />c <br />~, ~- WY 2006 <br />c <br />0 3 - ---- ---- --- --- - -- -- <br />r <br />•_a 2 --- - - ---- - -.-Average <br />~ 1971-2000 <br />d <br />L <br />0 <br />Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep <br />The daily snow water equivalent, a standard measure of snow pack, was collected from Snotel data <br />at Overland Reservoir and McClure Pass (MRCS, 2006). Historical data for Overland Reservoir <br />were available beginning with WY 1990 and for McClure Pass beginning in 1981. The annual <br />• snow pack (snow water equivalent) was 79% of the historical average for Overland Reservoir and <br />95% for McClure Pass. A summary of the snow pack data is graphically shown in Figures 4 and 5. <br /> <br />December 2007 HydrOGeo, Inc. <br />