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<br />4 <br /> <br />1997. In the years 1993-1997, the costs shall be nonreimbursable only to the extent that the . <br />effect of all provisions of the GCP A is to increase offsetting receipts. The Commissioner of <br />Rec1am~.tion has submitted to the Congress reports on the results of the net operating receipts <br />computations for fiscal years 1993, 1994, and 1995. <br /> <br />Section 1809 of the GCPA requires the Secretary of Energy, in consultation with the <br />Secretary of the Interior and stakeholder representatives, to identify economically and <br />technically feasible methods of replacing any power generation that is lost through adoption <br />of long-term operating criteria for the operation of Glen Canyon Dam. The Western Area <br />Power Administration has completed a draft report and expects to meet the two-year deadline <br />cited in the GCP A. <br /> <br />GLEN CANYON DAM OPERATIONS - WATER YEAR 1997 . <br /> <br />Glen Canyon Dam was operated in 1997 in compliance with the ROD, operating criteria, and <br />the 1997 Annual Plan of Operations. Total unregulated inflow to Lake Powell during 1997 <br />was about 144 percent of normal; which resulted in an annual release of 13.8 million acre- <br />feet (mat). Monthly releases ranged from 623,000 acre-feet (at) in November to 1,537,000 af <br />in March. Many of these monthly releases were made as nearly constant high flows, at times <br />reaching about 27,000 cfs ii1 both March and June. A table of monthly release volumes and <br />. the associated power generation is shown in Appendix E. <br /> <br />~ <br /> <br />The 1997 spring runoff forecast oscillated IIp and down during the late winter months as a <br />result of varying month-to-month precipitation. The largest change occurred in early <br />February, when the forecast increased to 171 percent of normal. This prompted an increase <br />in releases up to the 27,000 cfs level in an effort to avoid an unplanned spill in the spring. <br />Releases were generally above 20,000 cfs from February through September. The maximum <br />reservoir elevation during the year was 3,695.1 during July, approximately 5 feet from full. <br />Both high inflows and releases characterized the summer of 1997 as above normal <br />precipitation fell across much of the ColOrado River Basin. Since the end-of-water-year <br />elevation in Lake Mead was higher than the elevation in Lake Powell, equalization provisions <br />of the 1968 Colorado River Basin Project Act were not applicable in water year 1997. <br /> <br />GLEN CANYON DAM OPERATIONS - WATER YEAR 1998 <br /> <br />The Secretary intends to operate Glen Canyon Dam in accordance with the 1998 Annual Plan <br />of Operations (see Appendix C). The most significant event to occur thus far in water year <br />1998 was the November 1997 test flow. Fall 1997 inflows to Lake Powell were above <br />normal as the result of high precipitation throughout much of the Colorado River Basin. <br />Possibly an effect of the strong El Nino anomaly, the precipitation created several short <br />duration flood events on the Paria River, a tributary to the Colorado River just downstream <br /> <br />. <br /> <br />j <br />