Combined Operations Secretary and Offset Accounting Report (Summary and Tables) Compact Year 2008

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l�, in this account. This detention in the winter water holding account continued through March 15, 2008, when the distribution of 14,369.57 acre -feet occurred to the appropriate accounts pursuant to Section III D of the 1980 Operating Plan. Of this amount, 14,273.99 acre -feet were transferred into Section III accounts. See Section 2 - Tables VI, VII and VIII. The remaining thirty five percent was transferred out of the winter water holding account each day and distributed as prescribed by Section III D of the 1980 Operating Plan: 408.26 acre -feet of water to complete the fill of the Kansas transit loss account, 2348.55 acre -feet transferred to the Kansas Section II account and 5124.12 acre -feet to the Water District 67 winter water storage charge account and thereafter to Colorado Section II accounts. See Section 2 — Table XI for details. The division of inflow between conservation storage and the winter water holding account followed established guidelines and resulted in an approximate overall 47 -to- 53 split (conservation to winter water) over the period November 16, 2007 to March 15, 2008. See Section 2 - Tables I and II. The methodology for determining the conservation storage to winter water ratio was consistent with the method utilized in prior years and a worksheet summarizing the determinations made was provided to the Assistant Operations Secretary's staff. The base flow at the Arkansas River at Las Animas gage was determined during the period November 8th through November 14th with current meter measurements conducted by the USGS on November 6th and by the Colorado Division of Water Resources (CDWR) on November 13th. The base flow was determined to be 54.71 cfs. During the period November 15th through November 29th computations were made to determine the enhanced flow associated with arrival of winter water at the gage. Additional current meter measurements were conducted on November 20th by CDWR and November 27th by the USGS. During the winter water /conservation storage season there were two adjustments to the ratio of enhanced flow to base flow, with a transition period occurring during the final five days. The enhanced flow fluctuated due to operational changes associated with upstream canals. The base flow was adjusted during the transition out of Winter Water as a result of an operational change of an upstream canal. A new ratio was computed for each of these changes and provided to the Assistant Operations Secretary's staff. ' For the period November 1, 2007 to April 1, 2008, conservation storage accumulated 26,097.31 acre -feet. In contrast, the previous year had storage of 42,629 acre feet. The 1950 to 1975 historical average winter storage amount is 22,209 acre -feet. See Section 2 — Table I ' Pursuant to an agreement reached by the Special Engineering Committee that will be described later in this report, Colorado delivered 3,062 acre -feet to the Kansas Section II account during ' May 2008, as restitution for past deficits in deliveries to Kansas from the Kansas Section II account. See correspondence in Section 1 following this narrative summary. ' The permanent recreation pool was increased by 3,875.7 acre feet during compact year 2008. In May, the Colorado Division of Wildlife stored 3,747 acre feet of water imported into the Arkansas River basin from the Colorado River basin pursuant to a resolution of the Compact ' Administration dated April 15, 1980. Colorado State Parks stored 128.7 acre feet from its "Muddy Creek" water right during the month of August pursuant to a resolution of the Compact ' Administration dated August 14, 1976. See Section 2, Table IV. See also correspondence documenting the sources of water included in Section 1, following this narrative summary.