Laserfiche WebLink
<br />. <br /> <br />. <br /> <br />. <br /> <br />Roc Creek Stream Flow <br /> <br />30 <br />25 <br />20 <br />~ 15 <br />10 <br />5 <br />o <br /> <br /> <br />~~ ~~ ~'? ~~ ~)- vv~ v~ ~vQ O'~~ 00;- ~Ot" ()~O <br /> <br />Month <br /> <br />Table 2 shows that the summer recommendation of 6.6 cfs is available at least 50% of the time <br />from March 15th through June 14th throughout the entire reach. Table 2 also shows that the <br />winter flow recommendation of 1.5 cfs is available at least 50% of the time June 15th through <br />March 14th. <br /> <br />Precipitation Data <br />Staff reviewed local precipitation data sets from 4 different sites located around the Roc Creek <br />Drainage (see Precipitation Data in Appendix C). These sites include Paradox 2 SE (1941- <br />1977), Gatway 4 NE (1947-1999), Delta (1893-1999) and Montrose #2 (1885-1999). Table 3 <br />shows the water year and the percent of average precipitation recorded at each site. <br /> <br />Table 3: Precipitation Data as a percentage of Average. <br /> <br />Water Year Paradox 2 SE Gateway 4 NE Delta Montrose #2 <br />1944 84% ? 114% 109% <br />1945 97% ? 99% 86% <br />1946 81% ? 135% 95% <br />1947 103% ? 130% 131% <br />1948 ? ? 135% 110% <br />1949 126% 117% 96% 88% <br />1950 42% 67% 63% 71% <br />1951 80% 95% 58% 61% <br />1952 108% 89% 92% 101% <br /> <br />Table 3 shows the variation of precipitation between the four relatively close precipitation sites, <br />the 1950-51 water-year was well below average for both sites, the 1948-49 water-year was above <br />average for both sites. It is staff's opinion that the eight years of stream-flow data analyzed is <br />representative of average to slightly below average water-years. <br /> <br />- 5 - <br />