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18S1 tated Model reservoir operation. 5H39NOBP A co~bination of runs 5H39 and 5HNOBP. All opera- tional crHeria similar to Run 5H except the maxi- mum joint-use pool is 39,000 acre-feet and no bypass re leases are made to meet High 1 and and Ninemile Canal demands in any month. Compares the effect of Trinidad PrOject operation to that of historical Model Reservoir operation. Same as 5H39NOBP except compares the effect of Trinidad PrOject operation to that of rehabilitated Model reservoir operation. 5R39NOBP 5H39NOWBP A combination of Runs 5H39 and 5HNOWBP. All opera- tional criteria similar to Run 5H except the maxi- mum joint-use pool is 39,000 acre-feet and no bypass releases are made to meet Highland and Ninemile Canal demands in winter (November-March) months. Compares the effect of Tri ni dad Project operation to that of historical Model reservoir' operation. 5R39NOWBP Same as 5R39NOWBP except compares the effect of Trinidad Project operation to that of rehabilitated Model reservoir operation. The results of these simulations are shown in Table 5 and Table 6. . The analysis of the results of these computer based simulations must be carried out in the context of the objectives of the Trinidad Project, the Trinidad Project Operating Principles and the Arkansas River Compact. Article I of the Operating Principles states in part "...The Project plan provides for: ...2. Optimum beneficial use of the available water for irrigation within the Project area consistent with the protection of, downstream non-project rights..." Article VI of the Operating Principles states in part that "...The primary. objective of such reviews (of the Operating Principles) will be obtaining opti- mum beneficial use of water as conditions change, operating experience is gained, and more technical data becomes available." Kansas Condition 4 states in part "That 5 years after begi nn i ng operati on of the Tri n i dad Reservoi r for irrigation purposes, the Operating Principles be reviewed to determine the effect, if any, the operation has had on other Colorado and Kansas water users and the Pri nci p les amended as necessary." It is clear from these prOVlslons that the Trinidad Project is to be operated to provide the greatest benefit within Project area as can be accomplished without injuring downstream water users; that the Operating Principles were intended to provide the direction necessary to obtain the optimum benefit without injury to the downstream users; and that through the revi ew process, the Ope rat i ng Pri nci p 1 es are to be amended, as necessary, to provide optimum benefits within the Project area and prevent injury to downstream water users. Nowhere in either the Ope rat i ng Principles or the Project history is there any suggestion that downstream users are entitled to any water supply benefits from the Project. I I I I I , t 20