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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Table 1. Recommended mean monthly flows [Osmundson et aI (1995)] for the IS-Mile Reach in <br />cubic ft/sec. Exceedance percent indicates frequency that the given flow should be met. For <br />example, during a ten-year period, half the years should exceed a mean flow of 1630 cfs in <br />August, September and October, three of the years should exceed 1240 cfs and two years should <br />exceed 810 cfs for a mean monthly flow. <br /> <br />Exceedence July August September October <br /> Mean Monthly Mean Monthly Mean Monthly Mean Monthly <br /> (ds) (ds (cfs) (cfs) <br />50% (Wet) 5,370 1,630 1,630 1,630 <br />80% (Normal) 3,150 1,240 1,240 1,240 <br />100% (Dry) 1,480 810 810 810 <br /> <br />Since the recommendations from Osmundson et al. (I 995) are presented as averages, <br />minimum flow are not the primary consideration. For example, the minimum flow for 2000 was <br />542 cfs and it was 477 cfs in 2001. The median minimum summer flows for the period of record <br />(II years) is 588 cfs. In spite of the fact that flows were less than the 810 for 32 days in both <br />2000 and 2001, these years do not violate Osmundson et al (I995) recommendations. Summer <br />flows in 1999 exceeded the 50% exceedence (wet year) recommendations for all months except <br />July (Table 2) indicating flows in 1999 would be considered optimal. Summer flows in both <br />2000 and 2001 exceeded the 100% (dry year criteria) in all months except July (Table 2). <br />However, the federal recommendations would not be "met" if another "dry year" happens before <br />2009. <br /> <br />9 <br />