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lS , i The Excelsior Ditch is another important junior canal. The lands irrigated by it are all meadow or pasture lands. It is conceivable that this Ditch might not desire to participate in the reservoir plan. For the purpose of this discussion, therefore, it is eliminated. Attention is called to the fact that the assumed re~uire- ments shown in the table are tentative only and are set up for illustrative purposes. Tho requirements were based on a diversion of about two acre-feet per acre. Where the material reuse of the water can be ~de within the aroa served by the cnnals, this was ta~en into consideration. Another criterion as to the ~roper amou.~t of water required by each canal is the 1929 diversion. The water supply during that year was more nearly parallel with the ideo! requirement thn.~ it was during any other year for which records of diversion are available. Statistics indicate also that the gross income for 1929 was the maximum for n.~y year for which such statis- tics have been gathered,embracing the poriod 1923 to date. " It is proposed that in addition to the privilege of havi~ de- livered to it the amount of water specified in column "(2)" of the table, each canal will have reserved to it the reser- voir capacities shOlm in t:,e last column, which it can use for hold-over purposes. For example, the Rio Grande Canal will have reserved to it 110,000 acre-feet for this purpose. If, in a particular year, the re~uirement is less than 250,000 ncre-feet, the difference between the actual diversion and tho 250,000 acro-feet cn.~ be held over and these differences can accumulate to a total of 110,000 acre-feet available for release during years >men the requirement is unusually high. , Dr~wing SLV-52 indicates the operation of each of the 13 canals shown in the table, from 1928 to 1938, and shows the "ne\" ,,,,,ter" that will be supplied to the cennls for such a period, by the reservoir, under the proposed plan. The annual diversion by each of the canals is indicated by the black area. The res- ervoir water diverted by some of the canals is separated from direct-flow diversions by a white line. The stippled area r€presents the "new water" thn,t will be made available under the proposed plan. Divorsions were made by some of the canals in certain years in excess of the assumed requirement. It is anticipated that thosc cnnals could make such diversions if they desired. However, it is believed the average of the di- versions over a period of Y0~rs should not exceed the re- ~uirement ngreed upon. ., i 1758