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'\ l OZ53 1. (b) A variable supply b"sed on the percentage of flow of the Arkansas River above the fort Lyon Canal headgate. 2.(a) An assured winter supply, SilY 25,000 acre-feet, each yeill' stored in John ~lartin Reservoir, summer diversions con- tinued to Great Pl'lins Rcservoh':>. 2. (b) Same as 2. (a) in winter but "lco storinr. SUr:1mcr '"ater in John Martin Reservoir and ut"ndon Great Plains Reservoirs. 5. After the agreed upon reservoir rights below Pueblo are siltisfied, direct ho'" rights will operate in ord-c";'ofpr"fori ty or distribution by a);!'eement:=:110st years the off-ch2nnel reservo.lrs will use up the flow originating be 10\1 Pueblo undcr the foregoi.ng criteria. !lo'"ever, in years when there is a surplus the di tchcti Cilli di.'rcrt dil"'cctly in order of priority ot' by any other ,,,ctl:od il[',reed upon by all of the di teh companies. In the present nnalys.i s. it was as.3\.uneJ the surplu5 would be diverted in ord~r of pr.joritYt hut th5.s diversion HOlJld not affect the ditches allocated shal'es of the PU'3hlo stored water as explained ahead. 6. Evaporation, and possible spills, of the winter water from Pueblo Reservoil', would reduce thc amount, to be allocated.--The contract between the United States and the District provides that "Winter Storage" will be spilled before "Project Water" if spills become necessary. Any spills ,of ,water, would belong to the river and subject to administration' under the'appropriation laws. In the project studies the average 'annual spill of "Winter Storage" amounts to 8,800 acre-feet 'annually and the evaporation charge averages 5,600 acre-feet annually. After these losses, the net yield of "Winter Storage" averages,65,900 acre-feet annually delivered at the outle~ of Pueblo Reservoir. ,\ 7. Allocation of stored winter water will be based on the rat io of the 'winter W<ltcr foregone as cstaJlished by" histOl'lC record.--It is assumed the distribution of the winter stored water in Pueblo Reservoir 'would bci based on the ratio of the winter direct flow diversion foregone to th~ total direct flow diversions foregone, based on the average over a historic period. These tentative allocations would be adjusted by the affects of the diversion to storage of the residual flows below Pueblo. Table 1 is a sample year showing how the winter water would be allocated. Columns 1 and 2 show the average annual diversions to storage and direct to land by the canals below Pueblo fot' the winter periods for the 10-year historic record, 1953 through 1962. 'Column 3 is a percentage distribution of the values in Column 2. For this sample year, 1953, ~~ \ .. 3