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'. 0:1878 it could have been used much more efficiently if applied at the time it was needed. Details are shown in the following table: Project diversion requirement Project d1versions: To meet crop requirements Winter diversions In excess of crop requirements (in Irrigation Season) Total Apparent shortage (61,200 - 37,300) 61,200 37,300 9,300 6.600 53,200 23,900 Since there are no substantial new water supplies available, improve- ment in the supply for the Trinidad area must be accomplished by increas- ing the efficiency of the existing supplies. The dominant factor of the project o]1eration is, therefore, 1mprOlling the _tel' use efficiency. The water use efficiency is improved by: 1. Lim1ting irrigation to 19,717 acres. 2. Limiting Diversions and Reservoir releases to the crop requirements. 3. When water is available in the reservoir all water rights would be exercised for the benefit of all irrigated lands. 4. Priority of use as between water rights would be exercised only when the project water supply is exhausted. In this manner, flows historically diverted in excess of crop requirements and most winter flows may be stored in Trinidad Reservoir under the trans- ferred Model storage right. An inventory of the water supplies wi tb and without the project is given in the following summary: Summary of Project Operation Studies Water supply available above project Project return flows Total Irrigation Irrigation & Stock water Stock water with project Evaporation Trinidad Reservoir Total diversions In River below Project Historic 63,600 18,800 82,400 53,200 53,200 53,200 29,200 Water supply above project Water in River below project Project depletion (Including evaporation) 63,600 2,,200 3 ,400 5 Future With Project 63,600 19,400 83,000 51,100 1,500 1,100 53,700 53,700 29,300 63,600 2~.300 3 ,300