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<br />r:~ ~, r,. (.1 ; Q <br />,:) ",' :-~ ,) ; () <br /> <br />. <br /> <br />Hydrology <br /> <br />Minimum flows of Boulder Creek averaged 33,500 acre-feet <br />annually during the study period, and ranged from a high of 80,300 <br />acre-feet in 1952 to a low of 2,000 acre-feet in 1956. Over 60 per- <br />cent of the annual surplus flows occurs in the months of May and Jrme. <br /> <br />. <br /> <br />. <br /> <br />20 <br /> <br />. <br /> <br />