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<br /> <br />O~: 0899 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />RESERVOIR OPERATION <br /> <br />Operation to Date. <br /> <br />Trinidad Reservoir has been operated according to the, <br />"Operating Principles - Trinidad Dam and Reservoir project," <br />which is appended to Volum~ I of the USBR Irrigation Report <br />(USBR, 1964). Irrigation is limited to 19,717 acres of <br />class 1, 2 and 3 lands and diversion of winter flows for <br />storage is limited to native flow rather than native plus <br />return flows as per historical practice. Accordingly, Table <br />3 shows the annual storage from 1977 to 1981. The reservoir <br />is operated so that evaporation losses are replaced from <br />storage. <br /> <br />In spring 1980, 14,952 acre feet of exchange water from <br />the mainstem of the Arkansas River was stored in Trinidad <br />Reservoir. Since the exchange took place wh ile di tches <br />between the project area and John Martin Reservoir were <br />diverting their full right, no water users were injured. In <br />addition, the Arkansas River compact was fulfilled by the <br />14,952 acre feet placed into storage in John Martin. <br /> <br />-22- <br />