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season, inflows into Lake McConaughy were 64 percent of normal and 112% of the projected
<br />inflow. Lake McConaughy storage content peaked on May 1 at about 733,500 af, 52,600 af
<br />higher than proj ected.
<br />During the irrigation season, total outflows from Lake McConaughy were 69 percent of average
<br />and 88 percent of projected; inflows were about 25 percent of average and 147 percent of
<br />projected. Lake McConaughy elevation declined 23.8 feet during the irrigation season, 8.5 feet
<br />less than projected as a result of higher than anticipated inflows and lower than anticipated
<br />releases. Starage water available to contract canals and Central customers was limited to 8.4
<br />acre-inches per acre. Lake McConaughy content at the end of the water year (September 30) was
<br />364,200 af, at an elevation of 3,199.4 feet.
<br />Water Year 2006 EA Volume
<br />Actual accruals, losses, and total EA volume during the Water Year 2006 (WY06) are illustrated
<br />in Table 1 below.
<br />Table l. Water Year 2006 EA Volume and Release Information
<br />Month WY2005
<br />Car -Over + 10°/o Storable
<br />Inflows af + Evap./Seepag
<br />Losses af - EA Releases (af) End of Month EA
<br />Volume af
<br />October (05) 98,057* 5,536 q 0 102,650
<br />November 5,523 79 0 107,380
<br />December 5,161 1,248 0 111,293
<br />January (06) 5,391 760 0 115,924
<br />February 4,463 1,274 0 119,113
<br />March 4,946 883 0 123,176
<br />April 4,387 1,537 0 126,026
<br />May 0 1,973 0 124,053
<br />June 0 2,164 0 121,889
<br />July 0 2,573 0 119,316
<br />August 0 3,597 0 116,719
<br />Sept. 0 1537 0 114,182
<br />Totals 35,407 19,282 0 ?
<br />* EA storage was credited with 314 af on 10-0 1-05 as per CNPPID's FERC license ?
<br />Carry Over
<br />Water Year 2006 Flows and EA Releases
<br />Flows at Grand Island during the 2006 water year are illustrated in Figure 1(page 12).
<br />The EA accrued 35,407 af during the WY06 non-irrigation season (October 1 to May 1). This
<br />accrual, combined with carry-over from WY05 and minus evaporation/seepage losses, resulted in
<br />a total EA volume of 126,026 af at the start of the WY06 irrigation season (May 1 to Sept. 30),
<br />slightly more than the 125,000 af predicted. A decision had been made by the Service in July
<br />2005, not to pursue implementation of an EA pulse flow in spring of 2006 for various reasons
<br />Water Year 2007 EA AOP 3 January 19, 2007
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