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Item Prediction Actual <br />SNI, October through March 289,200 af 298,353 af <br />SNI, October through April 315,800 af 353,782 af <br />Type-of-Year Wet N/A <br />The Districts' 2000 Water Year Operations Plan was based on above average carryover storage <br />in Lake McConaughy and reservoirs in Wyoming and an anticipated above normal water supply <br />on the North Platte River. Although above average water supply conditions did occur very early <br />in the water year (e.g., Lake McConaughy fill in October), lower than expected inflows (about <br />85% of average during the first half of the water year) occurred as the water year progressed <br />resulting in less than expected spring storage levels. CNPPID also predicted Lake McConaughy <br />would fill during the months of March and April. However, no reservoir fill occurred in the <br />2000 water year after November 22, 1999. <br />Drought conditions persisted throughout the irrigation season. Low precipitation and dry <br />conditions lead to lower inflows into Lake McConaughy and decreased natural flow gains <br />accruing to the Platte River system. The lack of natural flow and high irrigation demand created <br />numerous water delivery difficulties in the Platte River basin and resulted in one of the largest <br />irrigation season withdrawal of storage water in recent history. <br />EA Volume <br />Because Lake McConaughy was "effectively at capacity" from October 1, 1999 to November 22, <br />1999, there were no storable inflows and the EA was set at 100,000 af for each day during that <br />period of time. On Nov. 23, 1999, the EA started accumulating 10 percent of the STTI. <br />Accumulations and total EA volume during the non-irrigation season were as follows: <br />Water Year 2000 EA Volume and Release Information and Projections <br />Month McConaughy <br />Fill +100K af 10% Storable <br />Inflows a+ Evap./Seepage <br />Losses af - EA Releases <br />af - End of Month EA <br />Volume af <br />October 100,000 N/A 0 0 100,000 <br />November 1,970 237 0 101,733 <br />December 7,188 558 0 108,363 <br />Janua 6,970 344 0 114,989 <br />Februa 6,559 293 0 121,255 <br />March 7,148 408 0 127,995 <br />A ril 5,543 1,231 0 132,307 <br />Ma 0 1,149 0 131,158 <br />June 0 1,399 12,992 116,767 <br />Jul 0 1,237 28,165 87,365 <br />Au ust 0 848 33,818 52,699 <br />Sept. 0 838 7,835 44,026 <br />Totals 35,378 8,542 82,810 Carry Over 4-' <br />Water Year 2001 EA AOP 3 January 3, 2001