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.- .1 l 1662 Administration passed a resolution requesting the Bureau of Reclamation to commence with a rev i ew of the operat i ng pri nci pIes in accordance with Kansas I Condition 4. III. DEFINITIONS A list of definitions of terms used in the operating principles, the report, and the appendices is as follows: 1. District. - The Purgatoire River Water Conservancy District. This entity was created and exists under laws of the State of Colorado to contract for repayment to the United States of an appropriate share of the project costs allocated to irrigation use. The District shall also be the agency responsible for the regulation of irrigation water supplies within the district boundaries. 2. Irrigation Capacity. - The 20,000 acre-feet of reservoir capacity allo- cated to irrigation plus the unsedimented portion of the joint-use capacity. 3. Model Right. - The original Model reservoir right to store 20,000 acre-feet of water from the flows of the Purgatoire River, under reservoir priority No. 10 in Water District No. 19 at a rate of flow not exceeding 700 cubic feet per second of time under date of appropriation of January 22, 1908, as decreed by the District Court of Las Animas County, Colorado, on January 12, 1925. The decree was transferred to Trinidad Reservoir and the District, made part of the District, and referred to now as the "Transferred Model Storage Right". 4. Joint-Use Decree. - A decree (April 27, 1972, Water Division No.2, District Court, Case No. W-130) which allows for the storage in Trinidad Reservoir in addition to. storage under the transferred Model right, any flood flows originating on the Purgatoire River above Trinidad Dam which would other- wi se sp i 1.1 from John Mart i n Reservoi r. Storage is 1 imited to the port i on of the 39,000 acre-feet of reservoir capacity allocated to joint use unoccupied by sediment at any given time. 5. 1961 Study. - The original "Appendix A - Water Supply and Utilization, April 1961." Studies were on a water year basis and assumed equal sharing with all entities in the project. All flows based on monthly analysis. 6. 1964 Study. - The "Appendi x A Supplement - Revi sed Water Supp 1y and Utilization, April 1964." A revision of the 1961 Appendix A which modified Trinidad Project operations to recognize and give some advantage to those indi- viduals holding the most senior water rights and the Model Land and Irrigation Company which had provided the storage right. Studies were placed on a calendar year basis. 7. Historical Model Reservoir Operation. - Historical operation in the area with the Model Reservoir of 6,000 acre-feet capacity at its historical location. 8. Rehabilitated Model Reservoir Operation. - Operation which would have occurred if the Model Reservoi r had been rehabi 1 itated with the fu 11 20,000 acre-feet of storage capacity available at its historical location and with the present ditches administered on a priority basis throughout the 1925-1957 study periOd of 1961 and 1964 Studies. 5