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Wa.ter 't'ear 2002 EA Releases Date s Amount Comments 6-01-02 300 cfs Began EA releases to maintain an initial goal of z500 cfs in the river at the Grand Island gage to mai.ntain a healthy aquat:ic community (i.e., :Eish and invertebrates)/ forage base for terns and plovers. 6-14-02 0 cfs EA releases, were terminated due to hycirocycling pattern of EA water returned at J- 2. Service biologxsts believe that the hydrocycling pattern of EA flows may be nullifying anticipated benefits from flow augmentation ancl negatively impacting the fish and macroinvertebrate communities. 6-21-02 300 cfs Started rele,ases again, when flatloading at the Johnson hyalro facilitywas possible and EA wat:er woixld be returned to the river at the J-2 return at a constant level. 6-27-02 400 cfs 300 cfs was, not m.aintaining flows at a desired level at Grand Island. 6-28-02 500 cfs 400 cfs was, not m.aintaining flows at a desired level at Grand Island. 6-29-02 600 cfs 500 cfs was, not m.aintaining flows at a desired level at Grand Island. 7-05-02 550 cfs CNPPID started decreasing EA releases due to proximity to flood stage at North Platte. 7-06-02 500 cfs See comment above. 7-09-02 600 cfs Increased re;leases again to improve the level of augmentation for aquatic community health and tern/plover forage base. 7-13-02 550 cfs CNPPID star-ted decreasing EA releases due to proximity to flood stage at North Platte. 7-14-02 500 cfs See comment above. 7-26-02 300 cfs The third aiid fina.l survey of the 2002 tern and plover nesting season in the central Platte was c;ompleted on July 23. Because the majority of birds were done nesting and most chicks fledged, and the quantity of water in the E;A was not sufficient to continue au.gmentation throughout the remainder of the irrigation season, "Carry Over" was ;prioritized. Termination of EA releases was initiated. 7-27-02 100 cfs See comme:nt above. 7-28-02 0 cfs See comme;nt above. 8