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<br />NATURAL ENVIRONMENT SURVEY <br /> <br />Survey Date: 8/31/88 <br /> <br />Survey Location: <br />Survey Summary: <br />Basis for ISF: <br /> <br />Highway bridge on Zorn Road. , <br />25' electroflShed. Sample included: 1 rainbow trout (9"), 58 brook trout (3"-10"). . <br />rainbow and brook trout fIShery . <br /> <br />FIELD SURVEY <br /> <br />Survey Date: 1130/89 <br /> <br />Method Used: R2X <br />Measured Flow (cfs): 0.23 <br />Survey Location: NW S4 nss R67W 6PM <br />Notes: 20' dls of Greenhorn Road <br /> <br />Grassline Width (ft): 5.63 <br />PHOTOS: DOW <br /> <br />W AlER AVAILABILITY <br /> <br />Method: <br /> <br />The Graneros Creek #1 hydrograph was derived as per the USGS WRI Report 85-4086 <br />(Mountain Region). See hydrograph below. The winter and summer instream flow <br />recommendations were both reduced to 0.25 cfs based on water the availability analysis. As per <br />the Division 2 Engineer, senior water rights do not present a water availability problem within. ' <br />this reach of stream_ <br /> <br />OCT NOY DEC <br />0.4 0.4 0.3 <br /> <br />MEAN MONTHLY FLOWS (cfs) <br />IAN FEB MAR APR MAY ruN <br />0.3 0.3 0.7 3.2 17. 7.0 <br /> <br />JUL AUG SEP <br />0.6 . 0.3 . 0.3 <br /> <br />Graneros Creek u/s Little Graneros Creek <br />SYNTHETIC HYDROGRAPH <br /> <br /> <br />4 <br /> <br />.. <br />... <br />e <br />~ 3 <br />o <br />... <br />... <br />> <br />:E 2 <br />... <br />z <br />o <br />~ <br />Z 1 <br />ili <br />~ <br /> <br />."J;- <br /> <br />------ <br /> <br /> <br />----------- <br /> <br />o <br /> <br />OCT NOV DEC JAN FEB MAR APR MAY JUN <br />MONTH <br /> <br />JUL AUG SEP OCT <br /> <br />IU_9ran".Wk4' <br /> <br />I - CWCB !SF AMOUNT I <br /> <br />~. <br />., <br />