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Table 1. Release Guidelines for the Environmental Account for the 1999/2000 Water Year (The two pulse./low periods are shaded) <br />May 1- June 30* 10-year running The principal affected resources are river and Medium Projections indicate shortages to <br /> average of 30-day riparian wetland processes such as average flow recommendations (3400 <br /> exceedance for 3,400 maintaining channel morphology; sediment cfs) in June. In addition, the present <br /> cfs, and 5-day supply; sandbar formation; nutrient cycling; conditions of pulse flows are well <br /> exceedance of 8,300- backwater habitats; groundwater recharge; below the recommended 10-year <br /> 10,500 cfs and behavioral cues for fish spawning; running averages for 5 and 30 day <br /> reproducfion, movement, and redistribution. exceedances. Medium priority will be <br /> to augment May/June pulse flow <br /> peaks. <br />May 11 - Sept 15* 1,200 fish community, least tern High Projections indicate shortages in June <br /> 1,200 and August. Historically, fish kills <br /> 800 have occuned during this period <br /> which could adversely affect fish <br /> community health and jeopardize tern <br /> food sources. EA water will be <br /> reserved for use during this period in <br /> the 2000 water year. <br />Sept 16 - Sept 30 1,000 fish community Medium Hydrologic and weather conditions <br /> 1,000 during this period in 2000 may <br /> 600 warrant the need for EA releases. <br />Oct 1- Nov 15 2,400 whooping crane, waterfowl Low Projected flows indicate these targets <br /> 1,800 will be met. <br /> 1,300 <br />Nov 16 - Dec 31 1,000 fish community, bald eagle Low Projected flows indicate these targets <br /> 1,000 will be met <br />IL_ 600 <br />* During May 1- June 30, high priority pulse flow requirements overlie the flows for species-specific physical aquatic habitat. May and June recovery flow targets are designed to <br />capture natural variability: a 10-year running average with a 30-consecutive-day exceedance of 3,400 cfs, and a 5-consecutive-day peak flow exceedance of 8,300-10,500 cfs (see <br />**) (Within this broad goal there are further recommendations that certain flow levels be achieved with 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. <br />EA AOP 10 January 31, 2000