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<br />e <br /> <br />001020 <br /> <br />e <br /> <br />recommendation:. The recommendations adopted by the SJRIP. expressed in terms of <br />flow magnitude, duration, frequency and purpose, are presented in Appendix A. <br /> <br />~e.\~ ~~+~ <br /> <br />The flow recomrllendatioDS being impleme by f4e ~p ~ve b characterized as ~~D IlL, , <br />one of the most important experiments of' kind. ~ emg coy watched by the river -r "bc.o <br />restoration community across the countly (Dr. David Galat, anal communication, <br />2002). While mimicry 91 the na~ hydrograph has bee onceptualized as a key <br />component of re~toratJ.~ and native fish recovery, fe , if any, long term trials under <br />closely monitored conditions have been conducted e major review now underway by the <br />SJRIP is the flISt attempt to evaluate the effectiV~anw;!'!ll~ treatolent..amJ.as <br />necessary, fme-tune the recommendations. Trends in omm"'UliiiYana physical ~t <br />data sets are being closely scrutinized... to identify responses to the altered flow regime over <br />the past ten yean;. ~ ~_ - <br />,H2.~~2:! ~a<.- ~ <br />To assist in the l\~view.-t,'the San Juan Water onmen~ Steerl.ng Committ <br />CSJWDSC) has anthom y logic alteratio e 0 ~ectives of this effo <br />are to: \\.)~~~ ~ ~ ~ ho~ ~ <br />~tQ~ c:t- eo".". ~ ~ eA-P.. <br />1. Measure -:he degree of hydrologic alteration which has occurred on the San Juan U <br />River sm..~e the closure of Navajo Dam and the implementation of the SJRIP flow <br />recommc::udations ~~mparisoV\ with the pre-dam record; <br /> <br /> <br />~ <br />~-rQ J~ <br /> <br />2. Identify 1tnose hydrologic parameters which are substantially altered from the pre- <br />dam record; <br /> <br />3. Evaluate fish community and physical habitat trends within the context of the <br />observed hydrologic alteration; and, <br /> <br />, ,.- -"- <br /> <br /> <br />4. Recommend adjustments to the flow recommendations for consideration by the <br />SJRIP which will allow future conditions to In6I1.chn Jy ...,:.II;l: 1111:: lJ.le-Nava,1€l - <br />_ P;:.....l :e,lL.vlvc.i~J.~L~axJ.d 1-'~...h8.pshasten recovery of the endangered fish species. <br />'[&;~~ ~~~ VV'f1'\\W\\~ <br /> <br />_~_ METHODS ~~ <br /> <br /> <br />The Natq;r~ Conservancy has developed a diagnostic tool for evaluating deviation from .,. <br />historiC'Stream S.ow conditinrrthat is based upon the ~L~_~l that maintenance of historic,..R../ <br /> <br />~~ <br /> <br />2 <br /> <br />E05-~ BIO/500"d 99v-1 <br /> <br />-WOJ~ Wd91:10 EO-BO-l~O <br />