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Water Year 2000 EA Releases <br />Date s Amount Comments <br />6-11 to 6-19 400 cfs Releases were requested to keep flows between 1,000 cfs and 1,200 cfs, in <br />accordance with Service-recommended flow targets, for maintenance of fish/aquatic <br />community health and tern forage base and to promote tern and plover nesting at <br />higher elevations. <br />6-20 150 cfs Termination of the 400 cfs EA releases was requested on 6-20 in anticipation of <br />increased flows due to rainfall events. Although CNPPID was not required to <br />terminate flows until6-21 (24-hour notice requirement for EA requests), they started <br />reducing EA releases on 6-20. <br />6-21 to 6-24 0 cfs See comment above. <br />6-25 to 7-3 400 cfs Releases were again requested to augment flows, expected to decrease below 1,000 <br /> cfs within the week. At the end of June, flows at Grand Island had dropped well <br /> below the 1,000 cfs mark. The goal of maintaining flows between 1,000-1,200 cfs to <br /> meet wet or average flow targets or to encourage tern and plover nesting at higher <br /> elevations was discontinued because too much EA water would have been required <br /> to maintain that level. In addition, local rainfall events result in uncontrollable <br /> spikes in flows above 1,200 cfs which would preclude any benefit for tern and plover <br /> nest initiation. Augmentation of flows to reach the Service dry-year flow target of <br /> 800 cfs at Grand Island for maintenance of fish/aquatic community health and tern <br /> forage base was pursued. <br />74 and 7-5 550 cfs An additional 150 cfs was requested because 400 cfs was not maintaining 800 cfs at <br /> Grand Island. <br />7-6 to 7-21 400 cfs Releases were reduced in anticipation of higher flows predicted to occur for a short <br /> period (less than 7 days) due to rainfall events. Terminating all EA releases in <br /> reaction to short-term flow increases at the lower end of the managed area proved <br /> problematic because of the 7-day time interval for releases from Lake McConaughy <br /> to reach Grand Island. <br />7-22 to 9-5 550 cfs EA releases were again increased by 150 cfs to maintain the 800 cfs flow target at <br /> Grand Island. By August 4, flows at Grand Island dropped below the <br /> 800 cfs target. Because the 550 cfs release was not maintaining the 800 cfs target <br /> and additional precipitation or a decrease in irrigation demand was not expected, the <br /> management objective was modified to include not only maintaining flows at Grand <br /> Island for fish/aquatic community health and tern forage base, but also to reserving <br /> some quantity of water in the EA for carry-over into the 2001 water year. <br />9-6 450 cfs EA releases were reduced in anticipation of the irrigation season ending and flows in <br /> the river improving. Reductions were made on an incremental basis so irrigation <br /> canals would not be adversely affected. <br />9-7 350 cfs See 9-6 comment above. <br />9-8 250 cfs See 9-6 comment above. <br />9-9 150 cfs See 9-6 comment above. <br />9-10 0 cfs See 9-6 comment above.