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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />North Fork reach is 120 cfs and for <br />appropriated on November 15, 1977, <br />initiated shortly thereafter. <br /> <br />the mainstem, 200 cfs. Both <br />and adjudication proceedings <br /> <br />were <br /> <br />were <br /> <br />Historic Diversion <br />Recent diversion records covering the four-year period of 1976-1979 were <br />acquired from the Division of Water Resources. The measuring systems on all <br />the diversions are not fully maintained, and frequently the diversion <br />records are merely estimates. The records do provide an approximation of <br />past operations and an indication of the div~rsions made under various <br />senior absolute water rights. <br /> <br />Only a small volume of streamflow depletion presently occurs above the <br />confluence of the North Fork and South Fork. Therefore, the volumes and <br />distribution obtained from gage records represent near-virgin flow <br />conditions. <br /> <br />Two conditions regarding diversions and water supply are worth noting. They <br />are: 1) some absolute water rights have not been used in recent years and <br />therefore are not reflected in streamflow data, and 2) other water rights <br />divert more flow in ample supply years than decre~d or necessary. Most of <br />the excess diversion returns to the river and does not distort the water <br />availability evaluations. These two basin conditions tend to affect the <br />hydrologic evaluations of water availability in compensating directions. In <br />this study, an assumption was made that the streamflow records reflect full, <br />but not excess, diversion by absolute rights. For these reasons, the water <br />availability assumptions are considered conservative. <br /> <br />11-17 <br />