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<br />SM concept plan~doc <br />8/16/04 <br />Page 4 of 10 <br /> <br />Flow Imoacts to the Present Status of the San Mil!Oel River <br />An anticipated concern is how much will additional storage impact spring runoff flows in the <br />main stem of the San :Miguel River. Specifically, will such additional diversion to storage <br />negatively impact recreational boating, and if so how much. Will there be any mitigating effort <br />and if so what? One of the identified needs is for additional late season in-stream flows in the <br />San Miguel River. <br />The following calculations are relevant: <br />1. Total annual virgin flow of the San Miguel River @ Nucla -----...------------ 207 ,425 AF <br />2. Required storage diversion (new)-----------------------.......------------------- 17 ~900 AF <br />3. Percent of decrease I annual basis ------------------------------------------...----- 9 % <br />4. Percent decrease during run-off season ------...-------------------------------------~---12 % <br />5. Percent increase during late season-------------._------------------------------------ 23 % <br /> <br />Project*s Impact on River Flow <br /> <br />60000 <br /> <br />50000 <br /> <br /> <br />. Divert to Storage <br />. rncrease late <br />season flow <br />. Annual Flow 0 Nucla <br /> <br />40000 <br /> <br />1 <br />II. 30000 <br />! <br />~ <br /> <br />20000 <br /> <br />0: <br /> <br />JAN <br /> <br />FEB MAR APR MAY JUN <br /> <br />JUL AUG SEP OCT NOV DEe <br />