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<br />EA Release Priorities for WY2004
<br />Release Guidelines for the Environmental Account (Tlre rwo pu[se flow periods are slraded.)
<br />Period Flow Targets (cfs) at Principal Affected Resources 2003 Water
<br /> G.I. Year
<br /> WedAverage/Dry Priority
<br />Oct 1- Nov 15 2,400/1,800/1,300 Whooping crane, waterfowl Low
<br />Nov 16 - Dec 31 1,000/1,000/600 Fish community, bald eagle Low
<br />Jan 1- Jan 31 1,000/1,000/600 Fish community, bald eagle Low
<br />Feb 1- Feb 15 1,800/1,800/1,200 Sandhill crane, waterfowl, fish community, bald eagle Low
<br />Feb 16 = Marcli 15 350250
<br />3350l3 Sustainiiig processes of the river and ri' aciauwetland ?
<br />P ?Hi 3'4 v
<br />?
<br /> , b . r .?,
<br />systems ?such as ice ;.,scodrmg ?o? channe? main?enance? ?
<br />
<br />:. and
<br />sediment supply; sandbar format?on, au,trient cyclYng?y `' y E,, ;
<br />,; ,
<br />- ,
<br />groundwater recharge to stimnlate biological acti.?rity?
<br />' ` T",
<br /> wetmeadows.
<br />March 16-March 22 1,800/1,800/1,200 Sandhill crane, waterfowl, fish community, bald eagle Low
<br />March 23 - May 10* 2,400/2,400/1,700 Whooping crane, fish community, piping plover, least Medium
<br /> tern, sandhill crane
<br />
<br />1VIay l Jun? 30? ?
<br />b10 year cunnmg ` k ,
<br />The principal affectedresources mclude rrver and `'
<br />Hig1} f} '
<br /> average: of 30 day, riparian wetlandprocesses suchas maintaynuig?6han,Cie? ? ??z ? z?'
<br />?
<br />exceedance for 340Q
<br />morphology, sedunent supply, sandbat formation, ?vtnent ?
<br />
<br />, i
<br />? ?
<br />efs, and 5 day ? i. '
<br />arge,??and
<br />;;cycling? backwate? habtats??grdundwate?„zech
<br />j exoeedance of 8,300 ?
<br />behaviaral cues for fsh sgawmng, repr?duct?ot?
<br />? O,SaO cfs mo.veinent, andredistn'kiu?to?l. A ;
<br />
<br />
<br />a z
<br />x ?
<br />.
<br />'S
<br />May 11 - Sept 15* 1,200/1,200/800 Fish community, least tern, piping plover Medium
<br />Sept 16 - Sept 30 1,000/1,000/600 Fish community Low
<br />Carry-Over N/A Transfer of EA water from one water year to the next for Medium
<br /> beneficial purposes as described above.
<br />* During May 1- June 30, high priority pulse flow requirements overlie the flows for species-specific physical aquatic
<br />habitat. May and June recovery flow targets are designed to capture natural variability: a 10-year running average
<br />with a 30-consecutive-day exceedance of 3,400 cfs, and a 5-consecutive-day peak flow exceedance of 8,300-10,500
<br />cfs (see **) (Within this broad goal there are further recommendations that certain flow levels be achieved with
<br />specific frequencies (see Bowman and Carlson et al. 1994) ).
<br />** The 5-day peak flow with ramped rate of rise and decline may occur in either February-March or May-June.
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