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001605 15 (By fiscal year, in millions of dollars] 1989 1990 1991 1992 1993 Authorization ievel,.................,...........,......,.......................................,............,................,........ 19.5 15,0 15.0 :,............ Estimated outlays............................................,.................................,.............,........................ 19,5 15,0' 15,0 ..,...."..,.. This bill is closely tied to the construction of the Animas-La Plata and Dolores water supply and storage projects, and much , of this bill's budget impact would not occur until after these projects are completed~ These projects have been authorized by separate legislation and an currently receiving appropriations; The Dolores project is roughly two-thirds completed, and is scheduled to begin operating around 1994. Construction of the Animas-La Plata project has not begun. If funds are appropriated and construction proceeds, it could begin operating around the year 2000. The water rights settlement that would be implemented, by this bill is re- quired for construction of Animas-La Plata because it specifies the cost-sharing agreement between the federal government and the nonfederal entities involved in the project, which include the State of Colorado and several water conservation districts. Under this cost-sharing agreement, the federat:,'government would provide during construction roughly $300 million of the project's $500 mil- lion total cost.! Some of these costs would be repaid once the projects are operating. ' , , The costs of this bill would be in budget functions 300 and 450. Basis of Estimate This estimate, assumes that the bill would be enacted early in fiscal year 1989, and that the full amounts authorized would be ap- propriated beginning in fiscal year 1990. The estimated outlays re- flect an assumption that the Secretary would establish the tribal development funds shortly after the funds are appropriated. Under the water rights settlement agreement, the tribes would be provided around 60,000 acre-feet of water annually-divided roughly equally between irrigation water and municipal and indus- trial water-and would have to pay a prorated share of the con- struction costs. Based on information provided by the Bureau of Reclamation (BOR), CBO estimates that the' total payments to the federal government would be roughly $6 million a year for the mu- nicipal and industrial water once both projects are completed. If the tribes do not begin to use the water once it is a available to them, the bill would authorize the Secretary to pay their share of the operations and maintenance costs. CBO has no basis for pre- dicting whether this would occur, but if it does, the cost to the fed- eral government would be around $500,000 allnually. CBO estimates that the construction costs associated with irriga- tion water used by the tribes would total $60 million to $70 inillion. We cannot estimate how much of this amount would be repaid, however, because that depends on where the water is used. Repay- ments are deferred if the water is used on tribal lands, as proVided ;.'~c,:.<,.~~v~.~.~"v:~~. - .Y~'_':'~t '_::\~ : ',>>:~~ 1 Figures in 1985 dollars,